result in subsonic performance in cartridges that otherwise would achieve. Or load 223 subs and run the rifle as a straight pull. ExtremeShock produces subsonic cartridges in. You can find some direction on the changes on the web if you're really interested in perusing it.ģ00BO is a much easier option for an AR system that cycles subs. It's just not that practical, so most don't mess with it. You're also shooting a round that has significantly neutered ballistics. Re the OP's question, it's possible to make an AR cycle subs, but by the time you increase the port diameter, shorten the gas system, and tune the buffer, you'll end up with a dedicated upper/rifle. 03-04-2021, 10:10 AM 8 Hills of texas Boolit Mold Join Date Jan 2021 Posts 26 This is all good info. 762 Hope for the best, plan for the worst. That and 4.95 will get you a double cam fru fru extra latte coffee. Much harder hitting and will penetrate about any living target stem to stern. I walked into the 223 subsonic rabbit hole. With a 300 your shooting a 200 grain or heavier bullet at 1100 fps. of energy still ensures lethal expansion and penetration on varmint-sized critters while a nongreasy lubricant coating provides flawless operation in semiauto platforms and varied weather. Even if you do get your 556 to run subsonic like kerplode eluded to your power level is not much more then a 22lr. 22 LR load features a 38-grain hollowpoint bullet that’s designed to expand at a lower velocity of 1,037 fps. For what your going to invest in time and loading components and gas to run to the range just pick up a 300 bo upper and then its a pretty easy goal. Solvent trap? Still isn't going to keep you from breaking the sound barrier and that's what will account for most of the noise when your running suppressed in a 556. Its not even worth trying unless you want to run your gun manualy. I have also thought about cutting a few coils off the standard buffer spring to see if this helps.Correct answer. 308 bolt gun using Lead 160gr bullets and 6.5gr of W2fps, 1 inch 100yrds. I have loaded down 5.56 with 2400 to 1900ish and got the ar to cycle using a reduced recoil spring. I need to find a reduced spring that I can try. I was reducing loads in a 270 win rifle once using 4227 and jacketed rounds. 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. Buy a couple boxes and let me know what you think about the rounds. We are getting ready to place a large order of the stuff to follow up on our initial testing. I have not shot enough of it to value it's accuracy or reliability. Considering the stuff was pellet gun quiet, I will assume it is subsonic. I've been at this since 2007 working with cast and jacketed projectiles from 53gr to 100gr. Re: subsonic 223 that cycles It is new to me. So, my solution needs to be simple and easily available to all shooters. Atomic 00408 Rifle Subsonic 223 Rem/5.56NATO 112 GR Soft Point Round Nose 50 Bx/ 10 Cs 72.99 Out of stock Federal Federal AE22350VP American Eagle Varmint & Predator 223 Rem 50 gr Jacketed Hollow Point (JHP) 50 rounds 36.99 Add to Cart Aguila Aguila 1E556110 Rifle 223 Rem/5.56NATO 62 GR Full Metal Jacket Boat Tail (FMJBT) 50 rounds 29. I have come up with a 223/5.56mm ammo that is subsonic, fits in a standard magazine, and cycles without modification to the rifle. 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. 22 Long Rifle ammo, has virtually no felt recoil, produces the. 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.
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