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1/25/2018 7:38:29 AM
Posted: 8/31/2010 10:09:30 PM EST
I am planning on building an AR pistol and I will not be using a can on it so no need to go into that discussion concerning barrel length. I currently have a 16in. Which would you guys prefer? And WHY?

-Would the 12.5 be more sloppy to use in a pistol configuration since it is heavier/longer?

-Is the flip/flash that much more obnoxious with 1 less inch?

-DOES ANYONE HAVE BALLISTICS CHART COMPARING THESE TWO LENGTHS FOR 75/77gr, 55gr, AND 62gr BULLETS?? (I will be using tap 75gr 5.56, but still interested in other gr bullets)

I really want to find out how far each one can reach out and still "fragment" reliably.....

Thanks for any help!
Link Posted: 9/1/2010 3:58:08 AM EST
[Last Edit: 9/1/2010 4:00:16 AM EST by shadowcop]
There is not going to be much difference in velocity between a 11.5 and 12.5".
I prefer the 11.5". Easier to handle and better balanced IMO
If you use the Barnes Tripple Threat, you won't have to be concerned with expansion.
Link Posted: 9/7/2010 4:39:07 AM EST
You lose about 50 fps going for 12.5 to 11.5, when using sbr from 10.5-12.5 there will not be too much difference in ballistic performance.
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