Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Posted: 10/6/2014 1:28:36 PM EST
[Last Edit: 10/6/2014 3:56:04 PM EST by Nulltime]
Looking at a couple of those AR Pistols on Primary Arm's site for when they become available again.

Pro's / Con's one vs the other barrel length wise? Leaning towards the 7.5 is velocity still acceptable for HD at that length? Thanks!

Link Posted: 10/6/2014 4:10:27 PM EST
I prefer a barrel that will allow at least one full turn before exiting the barrel, call it a phobia of mine.
Link Posted: 10/6/2014 4:18:49 PM EST
I am going to assume a 7.5 wont cut it then?

If it does not make one full turn would the round not be fully stabilized?

Link Posted: 10/6/2014 4:57:56 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Nulltime:
I am going to assume a 7.5 wont cut it then?

If it does not make one full turn would the round not be fully stabilized?

View Quote


Heavier bullets outperform lighter in faster twists and are more efficient in shorter barrels compared to short bullets.
I recently reread an article that showed a 10 inch barrel was around 2.5 db louder than a 14,5 which means it is real close to twice as loud. A buddy also confirmed that the 10" 416 is much louder than either the 14.5 or the 18" uppers he used in the military.
I'd build a pistol caliber 5-6" before I'd even think about going below 10.3-10.5".
Link Posted: 10/6/2014 5:25:40 PM EST
Thanks for that :)

Managed to find a bit more on the topic as well.

Will stick with the 10.5 then :)

Thanks!
Top Top