![]() So whether you’re looking to thin the herd of lawn-destroying gophers without alarming your neighbors, or if you simply need a low-noise alternative that helps protect your hearing while shooting, here’s a look at five of the best subsonic. 22LR cartridges are typically more accurate than their high-speed counterparts. Also, as many a competition shooter can tell you, subsonic. The Quiet-22 is still plenty lethal to stop a ravenous squirrel at 20 yards and produces roughly half the noise. Take CCI’s Mini-Mag 40-grain round-nose load, for example, which produces 1,235 fps and 135 foot-pounds (ft-lbs.) of energy, and compare it to CCI’s Quiet-22, which slows to 710 fps and 45 ft-lbs. Where subsonic ammo excels, however, is with the. Despite what you might think, much of the noise comes from the gas escaping the barrel, so subsonic rounds aren’t exactly whisper quiet, which is why many add a suppressor to the mix. The tradeoff is less energy on target, which makes going subsonic less desirable with many large hunting calibers. Since the crack of a bullet breaking the sound barrier greatly increases noise, subsonic ammo is designed to leave the muzzle at less than the speed of sound, which is roughly 1,125 fps at sea level. ![]() The truth is, there’s a time to slow things down and keep it quiet, which is why subsonic ammo exists. Not only is all that velocity-crazed volume hard on the eardrums, it’s also unfriendly to the pocket book, as anyone who has recently bought a box of ammunition for one of the newest long-range super cartridges can tell you. Just stand next to a muzzlebraked magnum or a straight-piped hot rod to get the picture. The drawback, however, is the noise pollution that accompanies our fixation with speed. From muscle cars to overbore rifle cartridges that burn barrels and launch bullets downrange at well beyond 3,000 feet per second (fps), we operate on the assumption that faster is better. I have also thought about cutting a few coils off the standard buffer spring to see if this helps.As red-blooded Americans, we’ve long ago come to embrace our ancestral need for speed. I need to find a reduced spring that I can try. I am leaning towards playing with the buffer spring and/or buffer. The idea of changing out the bolt carrier and gas block and such is not an option. So, my solution needs to be simple and easily available to all shooters. What are some options I can do to help aid the cycling? My goal is to have a subsonic round to sell to any and all shooters who have an AR-15 with 16" barrel and a 1:8" or 1:7" twist barrel shooting suppressed. When I get my speed up just above 1100 fps (supersonic speed), it will cycle and the bolt will lock back on an empty mag. It will eject the spent case, but the bolt will not lock back on an empty magazine. When I get down to the speed I need, I can not get the bolt carrier to fully cycle the next round. I have a working subsonic load with both bullets in a standard M4 type, 16" barrel shooting suppressed. ![]() I am working with some custom 87 grain and 94 grain flat base, HP bullets that will stabilize in a 1:8" or 1:7" twist, 16" barrel. I began working on my 223 subs that will cycle an AR. I need some help guys! I know ammo very well, but I don't know the inner workings of an AR as well, like some of you do. ![]()
0 Comments
Leave a Reply. |