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AR15.COM
1/7/2012 6:22:39 AM EDT
Thinking about getting another upper and wondering what the best or most interesting commercially available non 5.56 round it should be chambered in.

Please give your reasoning for your claims.
1/7/2012 6:39:40 AM EDT
[#1]
9mm because it's just a cheap good old fun round to shoot.
1/7/2012 6:40:05 AM EDT
[#2]
300 BLK
1/7/2012 6:42:39 AM EDT
[#3]
I pondered the same question over some beer the other night.  I came to the same conclusion as I always do.  7.62x39.

It is very similar to the 30/30 in ballistics.  Not a powerhouse but has better killing power on medium sized animals,  deer for example.

I rarely load more than 10 rounds when I use it and have plenty of 10 round mags.  I can load up to 5 rounds in a 5.56 mag and they feed fine also.

Ammo is available everywhere and is very cheap.