1/10/2024 0 Comments Subsonic 223 loads forum223 be achieved that will cycle a 5.56 AR? Maybe if one could load a 150-200 grain bullet. I've experienced enough lodged bullets and they aren't fun.Ĭan a subsonic. Can one use light bullets in subsonic AR loadings? Probably, but I won't. In guns w/o a gas port I use lightweight bullets for subsonic. I know the 100 yard group was terrible because the bullet has destabilized. That was many years ago that I did that work and some of it is sharp and some is fuzzy. At 100 yards the bullets are keyholing and groups were around 4" if I remember correctly. It was a tackdriver out to 75 yards but with a rainbow trajectory. I think my subsonic AR load used Green Dot and i know it used a Sierra 70 gr. I also don't like using really fast powder. Of course with guns having a gas port near the muzzle, or entirely absent, that possibility is greatly reduced or eliminated. You also won't experience lodged bullets in the barrel. You'll hear it (or not hear it) when you go subsonic. I suggest that they start slightly higher, into the super sonic range and work down. Oh, and you had better know what you're doing. So to counteract this I tell folks to do exactly the opposite of what is suggested when loading. If too little velocity is attained or the bullet is too light the bullet doesn't exit the barrel and the pressure can be heard to FFZZZZZ as it leaks out the port. We're not dealing with much pressure when using fast powder in the 5.56/.223 when the bullet reaches the gas port. I like my subsonic loads to use a heavy bullet for the AR. The problem with subsonic loads in an AR is the gas port in the barrel. Sure it could be fired out of an SBR or handgun, but it'll never reach much above subsonic and be safe. Mark got it right, subsonic and not normal 5.56/.223 velocity. 22lr sub?Īpart from anything else just what sort of a twist do you expect down the barrel of your. 223 will have a terrible arc and make hitting things a nightmare, just where are you seeing an advantage of a. 223 (lets forget BC for simplicity) and a 75g sub sonic. 22lr will have the same arc and energy as a 40g sub sonic. 22lr and will have little or no advantage at 100 yards over the. If it is sub sonic then it will be the same speed as your. 223 would certainly have that extra punch for vermin control with little noise. 22 subsonic is not much better than an air rifle, but a. My thoughts are based solely on noise nothing else and to me a. That got me thinking, no noise but plenty of hitting power at 100 yrds. 17hmr, unless I want something quite ie subsonics. The reason for the original question was based on the fact my. Source: Modern Reloading by Richard Lee, 1996 Ed. Only one load given "start" and "never exceed" figures are the same. I'd sell the LR as I rarely use it other than for braining cage trapped Foxes! I wouldn't even need to re-zero my scope for that.Ĥ5gr bullet over 11.5gr of IMR 4831 for predicted MV of 1085ft/sec with pressure at 10700 CUP and minimum COAL of 1.720". I'd love to work out some sub loads for my Hornet. ![]() If you're not doing it often £40 for powder is better than a complete. 22lr.Īs for making the loads, all you'd need to lay out on is a tub of powder. Shot placement will be a little less critical on a Fox than it would be with a. All you have to do is zero with the subs and you don't have anything to think about other than what you would with the. 22lr without thinking about drop? He said 10" drop compared to his normal loads. I can see where that could be useful.Ĭan you shoot at 100 yards with a. 308 doing the same speed will give you around 450ft-lbs. 22lr sub offers about 80ft-lbs at the muzzle if I remember right.
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