The internets best resource for shotgun information. As the nozzle is tightened, water shoots out in a long, narrow stream, similar to the full choke on a shotgun. How much will a fixed cylinder bore choke limit me. Shotgun sports pattern analysis for busy sportsmen by ron jones. Federal flite control wads are great for this since they keep patterns from forming a donut shape. The shotgun analyzer program allows you to average as many targets as you. Secondly, pattern alone is not sufficient, as patterns themselves do not kill. Depending on the person, a shorter barrel may not be a detriment. If you want a universal short barrel, send it to carlsons and have them cut it to 18 or 20 and add interchangable choke tubes. Every expert on shotguns declares it is as a poor choice, suitable only for poachers, experts, cripplers, taxidermists and so on down the line.
Shotgun chokes explained cylinder, improved cylinder. Shotgun patterning with target telemetrics youtube. The question i am going to try to answer in this article is what the. After purchasing the software you will recieve an email with the necessary password for your application. A lot of new gun owners get confused when deciding whether or not to use an improved cylinder choke or a regular cylinder choke in their shotgun bore. As the nozzle is opened, similar to the cylinder choke on a shotgun, water shoots out in a wider spray. Cylinder bore means the barrel is the same inside diameter all the way to the end. The cylinder bore of a shotgun is the diameter of the opening at the end of the barrel.
This is usually anything from cylinder bore to improved cylinder. Information on shotgun bore size, the history of and how. Experts notwithstanding, i find it to be effective and useful within its limitations. The choke determines the diameter of the shot pattern at a given distance.
This pattern widens as the group of shot pellets gets further away from the muzzle. However, at 40yds or more, with any 2 34 12 ga load available, the patterns were all over a 4x4 target board. As you already know, the cylinder choke is known for not giving users any restriction in their shooting. Please read this manual thoroughly before use for proper operation. I am thinking about trying turkey hunting this year, but i dont have a hunting shotgun. Technically, a cylinder bore will put 40 percent of its pattern in a 30inch circle at 40 yards. Shotgun barrels have a choke to control the spread or shot pattern. Hello all, just wondering if anyone can give me any advice regarding a turkey hunt, witth an 18. Idea for remove burrs and properly roughen the cylinder walls to produce an oil holding cross hatch pattern and provide an adequate seal.
Jun 14, 20 cylinder bore throws about the same pattern at 20 yards that full choke throws at 40 yards. The selfaligning and flexible shaft ensures a smooth movement to get you a nice even hatch pattern bore. Cylinder choke is going to be way too wide open for clays waterfowl. Luckily mossberg 500 barrels with replaceable chokes are available and relatively cheap. However, the weapon you have i control several is buttersmooth and reliable. Shotgun patterns are measured at 40 yards for all gauges, except. Now, with the 18 inch cylinder bore the 00 buckshot spread is 15. Youll want to pattern your gun with each choke load you plan to use and see how your setup performs as well. If you want a universal short barrel, send it to carlsons and have them cut. The final refinement of my pattern analysis system was arrived at when i obtained a copy of oberfell and thompsons book the mysteries of shotgun patterns oklahoma state university press, stillwater 1957. The only way to answer your question with certainty about a 60% cylinder pattern versus a 60% modified pattern would be to do a bunch of patterns and have concentric 10 and 20 circles inside.
By the same token, an 18 full or mod choke barrel will pattern just as good as a 30 with the same choke. The only way to answer your question with certainty about a 60% cylinder pattern versus a 60% modified pattern would be to do a bunch of patterns and have concentric 10 and 20 circles inside the 30 circles and do a heck of a lot of counting. Obviously some sighting systems work better than others. May, 20 turkey hunting with a cyinder bore, improved cylinder 18. And in many tactical shotgun classes it is pretty standard you shoot out to 50100 yards with slugs. Most le and tacticaldefense oriented shotguns are smooth bore with a cylinder or improved cylinder choke. The bore sizes of other common shotgun gauges are as follows. Turkey hunting with a cyinder bore, improved cylinder 18.
Shotgun patterning, handgun and rifle scoring and analysis using turbo targets are the first truly automatic software applications for capturing rifle handgun group data and shotgun pattern data on your iphone, ipad, mac or pc from camera images. If you are using a smart phone or tablet app you should gauge your results by. Richard atkins gets to grips with the unsung hero of modern shotgun design. Apr 20, 2010 best choke for tactical shotgun, best tactical shotgun choke, best tactical shotgun chokes, get tight patterns from cylinder bore shotgun, how tight is birdshot in a remington 870 tactical shoot, rem choke tactical versus improved cylinder, remington 870 tactical choke, tactical choke tube for 870 express, tactical choke vs improved, tactical. I shoot clays and quail with an 18 barrel cylinder bore 12 ga. To get results that are accurate and shareable, you need a couple of basic things. I keep hearing differing opinions online so i wanted a familiar communities take on this. I wouldnt recommend a cylinder choke for turkeys, but for decoying ducks, quail, prairie chickens and sharptails on a calm day, or pheasants pointed by dogs, you would be better served with a cylinder choke than a full choke. At 25 yards, they usually put one or two of the nine pellets buckshot out of a 15 inch circle. So what is the best tightest group choke when using 00 buckshot.
Therefore it has no choke so the shot, buck round will open up the pattern of the projectiles quicker than a barrel that has a choke. If you generally use one ounce and raise that 25% to 114 oz, its the same as increasing your choke from cylinder bores 40% to improved cylinders 50% as far as pattern density goes. A greater number of ballistically superior round pellets in a shot charge gives you exceptionally uniform patterns delivering more shot pellets in the effective part of your pattern. As the pellets travel farther from the firearms muzzle, the pattern widens. The single best way to see shotshell patterns other than shooting them yourself this pattern app is based off actual winchester factory. Firstly, although in general terms, all chokes above cylinder give a pattern percentage greater than cylinder, increasing choke thereafter frequently does not give burrards closer or more concentrated pattern, as we have seen. Pattern spread diameter is shown shaded within cylinder spread.
Rating is available when the video has been rented. What is police cylinder on smith and wesson model 3000. May 25, 2008 the choke determines the diameter of the shot pattern at a given distance. Sep 21, 2015 shotgun patterning and pattern analysis.
Unfollow cylinder bore gauge to stop getting updates on your ebay feed. Shotgun analyzer will perform a pattern analysis when used with turbotargets. A modified cylinder bore is a further constriction with a tighter pattern for use at ranges beyond what the improved cylinder handles. A 30 cylinder bore would pattern just about the same as an 18 cylinder bore. How much effective range for a true cylinder bore shotgun. What shotguns pattern the worst out of the box, what shotguns pattern the best, and how much of a difference is there, really. I do have a tactical shotgun that i can plug to meet the 3 rounds requirement in georgia. Improved cylinder gun and game the friendliest gun. Well for game where smaller 78 shot fills out the pattern better is appropriate such a quail,grouse or even preserve ringnecks over a pointer where 90% of the shots are less than 30 yds. Adjustable tension screw, controls the spring pressure of stones against cylinder bore to meet different piston diameters.
After extra full sizes are no longer listed in smaller than your bore, they are listed as the measurement of the bore. A full choke will have a tighterdenser pattern at 30yrds than a cylinder bore will. The cylinder bore wont tighten your pattern, but if youre familiar with your ammo and know how it will pattern over a distance, you can still use it effectively. A shotgun barrel with cylinder choke actually has no constriction at all. In an attempt to clarify during the period of shotgun development cannons were firing rounds distinguished by their weight 1,4 or 8 pounders for example, balls and the most common units of measure was a dozen 12 therefore the logic of dividing a one. Before i go load up on a bunch of turkey loads and try to pattern them, am i. A full choke would leave you with a hole with fur around it on a close in shot. What kind of pattern at 7, 15, 25, and 50 yards can i expect with a 14 inch cylinder bore mossberg. I am thinking about getting a mossberg 590 14 inch 5 shot pump shotgun. If the the pattern spread either the 75% spread figure from shotgun insight or the traditional pattern efficiency of the gun and shell combination is known at the break distance, then this combined with the shooters average can be used to estimate just how much variation the shooter exhibits when placing the shot. A modified choke is the best choice for a general purpose choke. Choke constrictions in thousandths of an inch smaller than the saami bore of. That turns out to be 35 yards for a modified choke, 30 yards for an improved cylinder ic, and 25 yards for a skeetcylinder choke. My current 590 patterns at 45 yards with buck and 100 with a slug.
Again, not much difference in pattern size, but interestingly enough, the tighter choke in the 870 actually had a larger pattern than the open choke gun on top. It has a 22 rifle on top and a 20 gauge cylinder bore on bottom and is a short barrel. A lot of choke is built into the wads and loads of a shotgun these days, such as the federal flitecontrol wad. The muzzle is the same dimension as the bore of the shotgun. Patterning at this shorter distance, most shooters will be using the choke that theyll be using for target shooting or hunting. Although i have several shotguns, im not a shotgun person. Shotgun chokes and patterns how often do we hear from a fellow gun, or read in shooting magazines about the importance of. Of course its safety depends on the operator using his brain and not putting his hand in front of the bore while adjusting it midhunt. Made of premium steel, maximize the cylinder honing tool with. A very convenient table in that book arrived at by shooting thousands of shotgun patterns at varying distances gives pattern. As an example, a 70% 30 circle 40 yard full choke pattern becomes a 62% 50 yard pattern and a 44% 60 yard pattern and a 36% 70 yard pattern. I hunted deer with hounds then, using buckshot, and the cylinder bore made since to pattern the buckshot factory loads better than a choked gun. Shotgun sports pattern analysis for busy sportsmen by. This is a photo found on the net of a shotgun like mine, a mossberg 385 with adjustable choke, 20 ga.
Fits 2 to 7 diameter brake caliper bores, engine cylinders of automotive, motorcycle and industrial equipment. Ar15 1911 remington 870 ammunition reloading gunsmithing tools. Apr 27, 2011 cylinder choke is the same as cylinder bore. If you want to shoot all your patterns at 30 yards as i frequently do, just evaluate the results expecting 96% patterns for full, 83% patterns for modified, 71% patterns for ic and 59% patterns for skeet. The board, paper with dot, shooting bench, and sight picture are all the same. Choosing shotgun chokes for home defense shooting illustrated. All other normal chokes fit in between cylinder bore and full, or performance between 20 to 40 yards. Patterning is a simple process, but time consuming due to all the counting required. Feb 26, 2010 i am thinking about trying turkey hunting this year, but i dont have a hunting shotgun. As a very rough rule of thumb, the following all produce exactly the same pattern and pattern size at the particular distance. An improved cylinder bore is a slight constriction at the end of the barrel throwing a slightly tighter pattern of shot and is best used as you move out from close range. Apr 01, 2016 the other way to tighten choke would be to just use a larger shot load. A shotgunshooters guide to interchangeable choke tubes.
Not restricted at the muzzle it has a cylinder bore because the mossberg 18 shotgun was designed to be for defense. Understanding shotgun chokes nssf lets go shooting. Clay shotgun chokes everything you need to know clay shooting. The weapon is open cylinder and if like all of ours, will have a high pattern. A modified cylinder would leave a treetop squirrel laughing at you. Shot spreaders or diffusion chokes work opposite of normal chokesthey are designed to spread the shot more than a cylinder bore, generating wider patterns for. Cylinder bore throws about the same pattern at 20 yards that full choke throws at 40 yards. From a graphic comparison of shot pattern diameters using 118 oz. Chokes for steel shot are not the same as for lead shot, a modified choke for lead shot would be a full choke for steel. The other way to tighten choke would be to just use a larger shot load. A modified cylinder bore is a further constriction with a tighter pattern for use at. In many le shotgun qualifications you qualify out to 50 yards with slugs. An improved cylinder is most effective from 20 to 35 yards. If the the pattern spread either the 75% spread figure from shotguninsight or the traditional pattern efficiency of the gun and shell combination is known at the break distance, then this combined with the shooters average can be used to estimate just how much variation the shooter exhibits when placing the shot.
I have had good luck shooting clays with a 14 entry gun. Simply shoot, photograph, upload, and analyze to get detailed information about your shotguns performance. Set a big piece of blank paper on a frame 40 yards from the muzzle. You can use any load that matches the guage of the barrel, although with no choke the pattern will be good for close range only. If thats true, the cylinder bore 55% 30 yard patterns would degrade to 47% at 40 yards, 39% at 50 yards, and 31% at 60 yards, and mere 23% at 70 yards.