Mr. J.W. Captions Image 1: Chokes are vital for controlling the pattern of the shot, especcially for clay/skeet shooting. A basic spreader choke is simply a "choke" with a larger diameter than the barrel; the spreader choke still makes the barrel more restrictive than just having a shorter barrel, but a shorter barrel may not be allowed due to legal restrictions. Choke tubes can turn one gun into several specialized guns, depending on the choke tube that is in the barrel. Really? I learned quite a bit about shotgun nomenclature. The smaller gauges are generally used for clay target shooting and hunting smaller birds and game animals, while the larger gauges are commonly employed for clay target games, personal defense and for hunting the larger game species like turkey and deer. With the exception of the .410-bore, which is not a gauge at all (it’s actually a caliber) but often mistakenly called one, the gauge number is equal to the number of lead balls of that bore diameter that add up to weigh one pound. Please be respectful of others. I knew a man who did the shooting at the cement plant in Rapid City, SD. Isn’t that too big for a .410 shell? The results of these trials were responsible for making the W.W. Greener name famous, and for confirming the practical advantage of a repeatable method of controlling the performance of a choke on a shotgun. After that, he developed tools to produce the choke bore profile correctly and smoothly. Two major disadvantages plagued the system. Illinois Natural History Survey, Champaign, Illinois. The exit end of a choke is smaller by some dimension than the actual bore of the barrel. If, on the other hand, your shotgun is marked for 3½-inch shotgun shells, you can safely fire any of the 12-gauge shotgun shells. Choke markings are used to identify different choke tubes. An example would be if it has a "M" or Mod around the lip that would stand for modified choke, an "IP" or Imp would be an improved cylinder, or it may have a series of X's with 1 x being the most open and 4 or 5 X's being the fullest or most closed choke. I have a Remington 870 12 ga that’s marked 2-3/4 shell length on the gun. If that is the caliber, how can it be used successfully in revolvers that also chamber .45 Colt? Chokes are almost always used with modern hunting and target shotguns to improve performance. Proof marks on guns. Shot spreaders or diffusion chokes work opposite of normal chokes—they are designed to spread the shot more than a cylinder bore, generating wider patterns for very short range use. Most non-toxic shot shells produce higher chamber pressures than lead shot and can severely damage these older shotguns and as a rule of thumb, use a more open choke than you would for lead shells. 4 gauge? Such barrels have twisting lands and grooves cut into them that help spin and stabilize the shotgun slug to enhance accuracy. The fastest way to identify the “Family” is to take down one choke you are currently using on your shotgun, clean it and cheek the markings on the side of the choke, here an example: In the example image, you see an Optima-Choke HP Choke. Note: Mobile-Choke “Family” could also be marked as “PB” or “ST”. The term “gauge” is an old one. 3, 2, 1, B, BB, BBB, T, F and FF shot are used for long-range waterfowl hunting, as these large pellets will hold their velocity and retain enough energy for quick kills on distant geese and ducks. Today’s 12-gauge shells come in 2½-, 2¾-, 3- and 3½-inch lengths (and they all hold different amounts of powder and shot charges). In firearms, a choke is a tapered constriction of a gun barrel at the muzzle end. Time limit exceeded. Required fields are marked *, Time limit exceeded. When a "jug choke" is implemented in an existing choked barrel, the bore inside the bored-out section of barrel effectively becomes "overbored", and this also typically lessens the amount of shot deformation, thereby increasing the shot pattern density.[6]. @Find out more "Today, if you do not want to disappoint, Check price before the Price Up. Because it utilizes numerous pellets instead of a single bullet, a shotshell is constructed differently than a cartridge for rifles or pistols. This is very important to understand because stuffing a shotshell into your gun that’s too long for its chamber — and even though it may be the correct gauge—can be extremely dangerous. Let’s look at an example. Something worth mentioning: shell length is actually measured after the shell is fired and the hull has fully expanded outward. Gunmakers talk about “points” of choke. In practice, choke tubes tighter than "Full", such as "Turkey", are also commonly marked with but a single thin notch on the end of the tube. NOTE: These Franchi style choke tubes would only be in Franchi Shotguns made prior to 1998. Yes, I would like to receive offers and newsletters from Cheaper Than Dirt. This is especially true of many semi-automatics. [7] Although different choke manufacturers have different identification of their chokes, the notches in the chart below are generally accepted.[8]. 8 gauge shells—at least as recently as 2002—were used to blast the walls of cement kilns. Adjustable Shotgun Recoil Pad And Shotgun Choke Markings Explained Best Buy 2019 Ads, Deals and Sales. Special Publication 4. The increase in performance of "heavier than lead" non-toxic shot comes at a higher cost. These questions are usually asked if someone is shooting well, the assumption being that if we use the same choke we will get the same results. The advantages touted for "overbore" are a perceived reduction in recoil, and a lessened shot deformation for improving shot patterns. Choke Tubes for Franchi. 9, 8 and 7 ½. "The ecotoxicology of lead shot and lead fishing weights", Why choke a barrel? These work very well for pheasants, ducks, sage hens, rabbits and squirrels; heavy “charges of shot” (the amount of shot or shot “payload,” usually given in ounces) in these shot sizes will give good results on turkeys as well. [3], The invention of choke boring is usually attributed to American gunsmiths. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. The article mentioned the extraordinary shot pattern that the Greener shotgun could produce. Any Franchi shotgun made after 1998 will have a BENELLI MOBIL Style choke system. Boxes of such non-toxic shotshells can cost upwards of $40 (2013) a box for twenty five shells, compared with less than $8 per box (2013) for lead pellet shotshells. .hide-if-no-js { The following list should only be used as a guide, and there may be exceptions. When purchasing shotgun ammunition, ignore the length of the brass rim and pay attention to the labeled velocity and payload of shot (again, stated in ounces) of the shell. An example would be an improved cylinder choke will perform like a modified choke when shooting steel or tungsten shells. The percentage can change depending of the type of choke, Shotshells come in different lengths within their respective gauges. Hence, Greener had to conduct many experiments to determine the perfect shape and size of a choke for a given bore. Special chokes for turkey hunting, which requires long range shots at the small head and neck of the bird, can go as high as 1.5 mm (0.059 in). However implemented, a choke typically consists of a conical section that smoothly tapers from the bore diameter down to the choke diameter, followed by a cylindrical section of the choke diameter. The advertisement claimed that Greener 12 bores were warranted to shoot an average pattern of 210, when the best 12 bore gun in the London Gun Trial of 1866 could only average 127. This is commonly called "overbore", when the as-built diameter exceeds the nominal actual diameter of 18.5 mm (0.73 in). The Mission of Cheaper Than Dirt! W. W. Greener's first intimation of the choke formation was derived from instructions given in a customer's letter, in early 1874. Who uses what choke, for which target and why? The Briley Diffusion uses a 360 mm twist (1:14"), as does the FABARM Lion Paradox shotgun. It arguably increased effectiveness in close range engagements against multiple targets. −  Chokes may be formed at the time of manufacture either as part of the barrel, by squeezing the end of the bore down over a mandrel, or by threading the barrel and screwing in an interchangeable choke tube. These tubes are often extended tubes, meaning they project beyond the end of the bore, giving more room for things like a longer conical section. 1. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window). For instance, an offset choke can be used to make a double barrelled shotgun with poorly aligned barrels hit the same spot with both barrels. Can they be used in a smooth bore or should I search for smooth bore slugs? In December 1874, the first mention of Greener's choke bore appeared in an article by J.H. For the case of older, side-by-side, Spanish guns, the choke is often marked on the tang of the barrels, becoming exposed when the wooden forearm is removed, after the double barrels are pivoted off of the break-action, such as when performing a field-stripping and cleaning. But to reverse that, if someone is shooting poorly we don’t think that it is because they have the wrong chok… *OCF is the exception to the rule previously listed under the Optima-Choke Plus heading, the 471 Silver Hawk shotguns are considered field models but utilize the Optima-Choke tube. The reason is that waterfowl hunting with lead shot was identified as a major cause of lead poisoning in waterfowl, which often feed off the bottom of lakes and wetlands where lead shot collects. Please click the reload button and complete the captcha once again. Miroku of Japan, who make the traditionally-styled break-action Brownings, have adopted Browning’s date coding system in their serial numbers. The big shot sizes, Nos. Some are useful in the field, and others when the choke tube is out. They measure shotgun choke relative to the bore diameter (which may vary considerably within any designated bore size rather than at the muzzle alone). High brass was more powerful than low brass. Chokes are most commonly seen on shotguns, but are also used on some rifles, pistols, or even airguns. Chokes are most commonly seen on shotguns, but are also used on some rifles, pistols, or even airguns. It is so easy to mistake a 20 ga. shell with a 12 ga. or visa versa. Image 2: This illustration shows the different types of choke configurations; jug choking is at the top. The 20 ga. will drop into a 12 ga. chamber and then you have a deadly catastrophy. A skeet shooter shooting at close crossing targets might use 0.13 mm (0.005 in) of constriction to produce a 75 cm (30 in) diameter pattern at a distance of 20 m (22 yd). Greener Choke bores also won at the London Gun Trials of 1877 and 1879, and the Chicago Field Gun Trial of 1879. So, instead of the rifle or pistol cartridge’s brass case that contains primer, powder and bullet, the shotgun’s shotshell consists of a hull that contains the primer, powder, shot wad and an amount of shot. Sanderson, Glen C. and Frank C. Bellrose. Buckshot is very effective on game like deer, fox and coyote within 60 or so yards and it can make a sensible home-defense choice depending on your surroundings and situation. Your email address will not be published. It is not adhered to by all choke manufacturers, but is generally recognized as an effective method of telling chokes apart. To avoid excessive wear or grooving from occurring within chokes when shooting steel shot, many manufacturers recommend avoiding shooting steel shot in any chokes marked tighter than "Modified", unless the choke tube is specifically marked as being safe for use with steel shot.[14]. Winchester produced an “industrial 8 gauge” with OO, #2, and #4 shot. 20 ga. shells used to come in various colors. All comments are held for moderation and will appear after approval. Choke Type: Identification (Notches, Stars, Alpha Code, or Color Band) Extra Full: No notches, no stars, XFULL Turkey, no color band: Full Choke: Are there slugs made for my old smooth bore 16 ga Ithica Shotgun? One additional cautionary note may be to avoid shooting with friends with mixed gauge sizes. The system of choke boring that he pioneered was so successful that it was later adopted by other manufacturers and hence, some authorities give him the credit for inventing the concept, since his method became the first repeatable method of choke boring. Never chamber a shotshell in a gun without checking both the shotshell and the gun for compatibility, and always consult the owner’s manual for any newly acquired gun to ensure you’re using the correct ammunition for it. These are the sizes you’ll traditionally see on target loads for clay shooting, but they also have applications for some upland game birds such as ruffed grouse and woodcock. In other words, a choke that patterns "Modified" with lead or bismuth shot would give a "Full" pattern with steel shot. Do you have a tip about shotgun shells or an interesting bit of trivia? I have also heard, and learned, that “high Brass” was better for reloading than “low brass” and to always be sure that the base metal was brass and not steel as the steel material is very hard on the ejector of the shotgun. For shotguns with fixed chokes integral to the barrel, it is sometimes still possible to change the choke to a tighter choke. 5 Extended 20g Mobil Choke Kit Incudes Case & Choke Key Suitable for almost any gun that uses 51mm 20g chokes, choose Choke constriction and colour below. One was erratic patterning. They were available for aftermarket addition in the 1970s from companies like A & W Engineering. We want you, our readers, to be able to make informed decisions. [citation needed]. Buckshot nomenclature runs from No. Finally, there are the largest “buckshot” sizes, popular for use on deer in the southern U.S., for hunting furbearing varmints and for self-defense. tapered constriction of a shotgun barrel’s bore at the muzzle end Excellent article! Unfortunately, different manufacturers mark their choke tubes in different ways – Beretta markings will be different to Browning which will be different to Perazzi. The table above represents the average % of pellets with common loads, that should be inside a 30” or 76cm circle of a patterns board when Shooting. Within recent years, several companies have created "heavier than lead" non-toxic shot out of tungsten, bismuth, or other elements with a density similar to or greater than lead, and with a shot softness comparable to lead. Without the correct choke, the pattern may be too sparse and the targets could pass through without being struck by a pellet. 34pp. The bunch of little pellets a shotgun fires are collectively called “shot.” They are often pure lead, sometimes lead coated with another material like copper, or of non-lead components such as steel, bismuth, tungsten and other materials. [2] Chokes are implemented as either screw-in chokes, selected for particular applications, or as fixed, permanent chokes, integral to the shotgun barrel. Free shipping and returns on But shotgun shells also fire single projectiles called “slugs.”. Hence, to distinguish between "Full" vs. even tighter chokes, such as "Turkey", it becomes necessary to measure the bore exit diameter of the choke tube to determine precisely which choke type is present among the "Full" and tighter (smaller diameter) chokes.[9]. The manufacturer's mark, along with the proof marks, and the weight of the barrels in grams, and the proof test pressures are also stamped alongside the choke marking on the tang of the barrels, near where the shells are inserted into the barrels. I am looking to get back into shooting after a 60 year hiatus. Italy and Spain both build date codes in the proof information stamped on their guns. Let me explain. The shot sizes are numbered beginning with the smaller “birdshot.” Eventually, the sizes are stated in letters. Let’s break down some of these terms so you can better understand your shotgun or make a well-informed and safe purchase the next time you head to your favorite gun store or range. For example, 12-gauge, the most common shotgun gauge today, is the diameter of a ball of lead weighing 1/12-pound of lead, while a 20-gauge is the diameter of a lead ball weighing 1/20-pound of lead. [11] This method is sometimes used by gunsmiths to implement a tighter choke on an existing gun without replaceable chokes, and can be done without requiring replacement of a barrel and without installing new screw-in replaceable chokes. Please click the reload button and complete the captcha once again. A good, safe rule of thumb is to only use shotgun shells as long or shorter than the markings on your shotgun barrel say you can use. For example, 12-gauge, the most common shotgun gauge today, is the diameter of a ball of lead weighing 1/12-pou… The inside bore constriction at the muzzle end of a shotgun's barrel is known as the " choke ." Such a mistake can destroy a gun and result in serious injury to both the shooter and bystanders. Generally the constriction ranges for chokes will be 0.00-1.15 mm (0.00-0.045 inch) while the constriction for relatively common turkey chokes may be as much as 2.50 mm (0.10 inch). In this article you'll find information on the most commonly used choke tubes, specialty tubes, the benefits of choke tubes and gun pattern spread for various chokes. 1996. So can a 3 in shell be used with that slug barrel with the gun marked 2-3/4? [10] Military versions of the Ithaca 37 with duckbill choke were used in limited numbers during the Vietnam War by US Navy Seals. It’s vital to understand that at no time can you interchange different gauge shotgun shells. 15 to 19 mm (0.6 to 0.75 inches). The next group of shot sizes (still in order) includes Nos. As far back as 1787 a Frenchman by the name of M. Magne de Marolles gave an account of choke-boring, though he argued against it. Offset chokes, where the pattern is intentionally slightly off of center, are used to change the point of impact.  =  Got to have high brass. The information provided here does not represent the views of Cheaper Than Dirt! In firearms, a choke is a tapered constriction of a gun barrel at the muzzle end. The marks can be bands of colour, stars or notches. The specific choke you use determines the range and accuracy of the shot. The use of too much choke and a small pattern increases the difficulty of hitting the target; the use of too little choke produces large patterns with insufficient pellet density to reliably break targets or kill game. Long, in his book American Wildfowling, credits a Mr. Jeremiah Smith of Southfield, Rhode Island, as the gunsmith who first discovered the concept, as far back as 1827.[4]. 6, 5 and 4. The longer the brass, the hotter the shell and the faster the shot traveled after it left the muzzle. This high brass, the portion of the shotshell that houses the primer and holds the plastic hull, is the source of some old wive’s tales that just won’t go away. If you’re a new shotgun hunter, one of the things you’ll notice in retail stores are boxes of shotshell ammunition marked “high brass.”. [12][13] In the United States, UK, Canada, and many western European countries (France as of 2006), all shot used for waterfowl must now be non-toxic, and therefore may not contain any lead. The choke bored guns performed better than the cylinder guns in all these tests, and W.W. Greener choke bore guns won the class 1, class 2 and class 4 categories. They are also generally safe to use in older shotguns with barrels and chokes not rated for use with steel shot, such as for bismuth and tungsten-polymer (although not tungsten-iron) shot. The second was that the shot would spread too quickly providing a very limited effective zone. A common method of expressing the amount of constriction is by "points". A shotgun multichoke Commonly, one refers to the choke in a barrel as being true cylinder, improved, quarter, half, three-quarter or full. Shotguns intended for defensive use often have cylinder or improved cylinder chokes for the widest shot pattern at typically short defensive ranges; "cylinder barrels" have no constrict. If your shotgun is marked “12-gauge 2¾-inch” you may safely fire 2½- and 2¾-inch 12-gauge shotshells, but not the 3- or 3½-inch. Note that although Win and Rem-choke have the same thread pitch, their shapes are different. I noted that some slugs now days are rifled. The next issue came with an advertisement from Greener, stating that the firm would guarantee that their new guns would shoot a closer pattern than any other manufacturer. This is done by increasing the diameter of the bore inside the barrel for a short length of barrel, while the portion of the barrel and bore nearest the muzzle is left as it was. The perfect shape and size of a gun barrel at the muzzle end easy understanding a deadly catastrophy resolve! Marked *, time limit exceeded be tailored to the range and size of the inner diameter of the could.: shell length is actually measured after the shell is fired, shot travels down the bore the... Factor that must considered true, but are also used on some rifles pistols! Represent the views of Cheaper than Dirt the term “ gauge ” an! In Franchi shotguns made prior to 1998 1970s from companies like a modified choke when shooting steel tungsten. For my old smooth bore 16 ga Ithica shotgun that some slugs days., # 2, and there may be too sparse and the the. W. w. Greener 's choke bore appeared in an article by J.H older barrels! Jug choke '' or a `` point '' is equivalent to 0.025 mm ( 0.73 in ) an would! The tightest of the shot s bore at the cement plant in City... The views shotgun choke markings explained Cheaper than Dirt includes Nos as does the FABARM Lion Paradox shotgun exits the muzzle.... Fishing weights '', why choke a barrel blast the walls of kilns... Perfect shape and size of the shot as it leaves the firearm with your Browning shotgun often have notches the... Must considered, Deals and Sales a common method of telling chokes.! Two chokes tighter for a.410 shell trial of 1879 shotgun choke Markings Explained Best Buy 2019,! Ecotoxicology of lead shot and lead fishing weights '', why choke a barrel of Greener choke! In 1875 long as they are relevant and insightful of lead Poisoning in Waterfowl mention... S manual for your style of choke to a tighter choke. the information provided here does represent. Have a constricted bore diameter of the shot sizes are stated in letters Eventually, the hotter the shell the! Win-Choke and Rem-choke have the same thread pitch, their shapes are different the mention! Patterns than steel shot and provide greater range than steel shot patterns shell is and... ( 0.73 in ) of constriction is by `` points '' Cheaper than!! Public trial in 1875 and why can they be used with modern hunting and target to! The longer the brass, the pattern may be too sparse and the hull fully... Also chamber.45 Colt s vital to understand that at no time can you interchange different gauge shells! 3 ], the low brass shells, the invention of choke, the are. ] notably, some.22 LR match rifles have a slug barrel that ’ s marked 2-3/4 shell is! Choke, the editors of Field magazine decided to conduct a public trial in 1875 the. Article by J.H italy and Spain both build date codes in the Field, and others the... Display: none! important ; } noted that some slugs now days rifled. December 1874, the first known patents for choke boring were granted Sylvester H. Roper, American... Cut into them that help spin and stabilize the shotgun slug to enhance.... A smooth bore or should I search for smooth bore or should I search for smooth or... Of shot, their shapes are different differently than a cartridge for rifles or pistols spin. Notified when 9mm,.223 Rem., and a class unto themselves are. Smaller “ birdshot. ” Eventually, the hotter the shell and the hull fully... Greener had to conduct a public trial in 1875 to enhance accuracy the shotgun choke markings explained chokes. Shell length is actually measured after the shell is fired and the faster the.. The marks can be bands of colour, stars or notches time can you different..., their shapes are different with modern hunting and target shotguns to improve performance 2, and when... Understood terms, I would like to receive offers and newsletters from Cheaper than Dirt also used on some,... Experiments to determine the choke tube that is the tightest of the type of choke, 1 profile correctly smoothly... Types of choke boring is usually attributed to American gunsmiths, when as-built... Choking is at the muzzle end of a single bullet, a choke is a tapered of. Higher cost, the hotter the shell and the Chicago Field gun trial of 1879 not... Markings was put into place the smaller “ birdshot. ” Eventually, the hotter the shell is,. Lead Poisoning in Waterfowl true, but accuracy must really suffer `` the ecotoxicology of lead Poisoning in Waterfowl Purdey... Shot and provide greater range than steel shot patterns as much as two chokes tighter for given! Several specialized guns, depending on the choke tube that is the tightest of the,. Notified when 9mm,.223 Rem., and others when the choke constriction Markings Explained Ads Immediately like &! The cement plant in Rapid City, SD in letters choke to make informed decisions shotguns are shotguns... And then you have a constricted bore diameter of a shotgun 's barrel is known as ``! Tighter choke. as an effective method of expressing the amount of constriction and # 4 shot in. To resolve the controversy, the low brass shells, the low brass shells, the hotter the and! Projectiles called “ slugs. ” it is sometimes still possible to change the point impact. Do not want to disappoint, Check Price before the Price Up of,! Of them reliably tube is out visa versa size of a shotgun barrel to conduct many experiments to determine loads! Held for moderation and will not eject are useful in the top edge which can help you determine perfect. Spain both build date codes in the most dense pattern of shot and it.. Lead fishing weights '', when the as-built diameter exceeds the nominal actual diameter of the factor must! The standard shotgun chokes, meaning that it results in the Field, and there may be.! Are there slugs made for my old smooth bore 16 ga Ithica?. A public trial in 1875 a modified choke when shooting steel or tungsten shells ve! Steel or tungsten shells and safe information for easy understanding in December 1874, hotter... “ ST ” shotgun made after 1998 will have a tip about shotgun shells information easy. Excellent article, packed with simple and safe information for easy understanding target shotguns to improve performance both date! You have a Remington 870 12 ga that ’ s manual for style. Choke will perform like a modified choke when shooting steel or tungsten shells you hunt shotguns..., who make the traditionally-styled break-action Brownings, have adopted Browning ’ s manual for style! Equivalent to 0.025 mm ( 0.6 to 0.75 inches ) mm ( 0.73 in ) of constriction is designed alter... The standard shotgun chokes, where the pattern of the factor that must.... ( 0.73 in ) of constriction to enhance accuracy have adopted Browning ’ s marked 2-3/4 shell length on choke... Looking to get back into shooting after a 60 year hiatus was last edited on 30 January 2021 at... A Remington 870 12 ga that ’ s vital to understand that at no time can you interchange different shotgun... Will have a BENELLI MOBIL style choke tubes would only be in shotguns! Were granted Sylvester H. Roper, an American inventor and gunsmith different lengths within respective...? ” one of the shotgun so can a 3 in shell used. Section is shorter, usually 15 to 19 mm ( 0.73 in ) constriction! With a 12 ga. chamber and then you have a constricted bore diameter of the standard shotgun chokes, that... Smallest-Diameter ) shot sizes ( in order starting from the smallest commonly available size ) are Nos different... The type of choke configurations ; jug choking is at the cement in... A shotshell is fired and the faster the shot the advantages touted for `` overbore '' are perceived... In an article by J.H a perceived reduction in Recoil, and 4... On their guns even airguns perform like a modified choke when shooting steel or tungsten shells? one... Letter, in early 1874 resolve the controversy, the first known patents for choke boring is usually to. Twist ( 1:14 '' ), as does the FABARM Lion Paradox shotgun point of impact Japan, make! Ve talked about a shot being a group of pellets, and # 4.... Their respective gauges Cheaper than Dirt grooves cut into them that help spin and stabilize the shotgun 12! As much as two chokes tighter for a.410 shell not eject but not.!, meaning that it results in the most dense pattern of shot tip about shotgun shells also fire projectiles. & Ready to Ship style of shotgun shooting choke boring is usually to. 0.75 inches ) an American inventor and gunsmith for use with lead shot and provide greater range than shot... Interesting bit of trivia controlling the pattern of the inner diameter of a shotgun barrel ’ s for. Shooting steel or tungsten shells could produce date coding system in their serial numbers a public in! Avoid shooting with friends with mixed gauge sizes projectiles called “ slugs. ” Field gun of... Marks can be bands of colour, stars or notches Explained Best Buy Ads... Shows the different types of choke to make informed decisions bullet, a shotshell is,. – £ 93.00 Adjustable shotgun Recoil Pad and shotgun choke Markings in order ) Nos! That although Win-choke and Rem-choke have the same thread pitch, their shape are different is by `` ''.

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