Originally Posted by
Ned Christiansen
None of the 220's, even the round-nosed ones with a lot of exposed lead, even the flattish-pointed 180's, will deform much at subsonic velocities.
I started working in earnest with .300 Whisper 2 1/2 years ago thinking it could be a great entry gun. Barrel length for barrel length, most of the issues with short-barreled AR's in 5-56 are instantly cured:
-tremendous muzzle flash
-debilitating noise
-compromised reliability
-ballistic short-peckeredness
The last one of course is based on a straight comparison of the numbers. Say, a 55 grain bullet at 2200 vs/ a 240 grain grainer at 1025 or so. But until a low-velocity-specific bullet is available, reduced terminal effect and overpenetration will probably block a subsonic .30 cal from this application. I've tried to get some of CorBon's 129 grain, .30 caliber Safety Slugs to experiment with, but no luck. I'm thinking that one solution might be that bullet, stretched out to 240 grains.
Everything else, the caliber delivers..... I was especially going after low noise with no suppressor (since my LE friends in IL cannot have suppressors). This caliber delivers the low noise quite nicely (compared to 5.56). In an 8" barrel it is less noisy than a .45.
I had never thought of lower noise signature that's great.
"Real men have always needed to know what time it is so they are at the airfield on time, pumping rounds into savages at the right time, etc. Being able to see such in the dark while light weights were comfy in bed without using a light required luminous material." -Originally Posted by ramairthree
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