.223 vs .30 Carbine for HD (<40ft)? - Page 2

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[ARCHIVED THREAD] - .223 vs .30 Carbine for HD (<40ft)? (Page 2 of 2)

Posted: 2/5/2006 3:56:05 PM EDT

[#1]

Another muzzle blast comparison:
M1 carbine with 18" barrel will have about 3200psi pressure at the muzzle (pretty much like a pistol)
AR15 with 16" barrel will have about 11000psi pressure at the muzzle, this is much louder

Posted: 2/5/2006 6:42:21 PM EDT

[#2]

Quoted:
Time to dismiss some myths and explain a few things.

As was said, the .30 Carbine was intended as a replacement for the M1911A1 handgun, not the infantry rifle. Second, all the stories you've heard have been with the FMJ round. This thread started out asking about it with the 110gr JHP, not the FMJ. Det. Jim Cirillo with the NYPD Stakeout squad shot a lot of bad guys. And a lot of them went down with the .30 carbine and 110gr JHP loads. His practical experience, at probably the same distances posed in this thread, is evidence that it works just fine.

With regards to reliability, there is a difference between the M1 and M2 magazine catches. The M1 is semi-automatic. When the M2 select fire was developed, they also developed a 30 rd magazine. The reports of 30rd mag unreliability arose when they were used in M1s with the original mag catch. The M2 catch has another contact point on the magazine that is absent on the M1 catch. They found that the M1 catch didn't always retain the heavier magazine at the proper angle, hence the malfunctions. So if you want to use 30rd mags in your M1, just make sure you have an M2 mag catch and that you are using original GI mags, not cheap commercial knockoffs.

Going back to the reports on battlefield effectiveness. The Carbine performed fairly well in most European theatres. Shorter ranges, house to house. In the Pacific, also shorter ranges, lightly clothed Japanese soldiers. When you get to Korea, you had longer ranges, more heavily dressed Chinese troops, at least in winter, plus inexperienced troops in the early part of the war. If you read any of the histories of how badly our guys performed when the N. Koreans first invaded, it is pitiful. With round nosed ammo, velocity drops off rapidly. Add inexperienced troops with poor skills (budget cuts by the Truman administration almost eliminated training time) and there was a hell of a lot more missing than there was hitting. If you go forward a few more years to the early part of Viet Nam, the carbine worked quite well and was well liked.

To answer your original question, at home defense distances of 40ft and less, I think either one will serve you well. Grab whichever one you want.

Great info! Been trying to figure out a way to get my carbine to stop jamming on the 30 rounders.

[ARCHIVED THREAD] - .223 vs .30 Carbine for HD (<40ft)? (Page 2 of 2)

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