I'm working on a new AR build and the age old question of 'how long of a barrel do I need' came up. Obviously as long as I can tolerate while keeping the form factor as close to small as I can get. We all understand the correlation of barrel length and powder charge/bullet weight to exit velocity, but it can be hard to find a sweet spot for a specific application without detailed statistics.
It's been awhile since I've seen a comprehensive study on barrel length, load, velocity, and wounding potential. Can you share any that you've seen in recent memory? My 'sweet spot' is going to be 5.56mm on targets within 100m, 200m at most. I'm really trying to keep this build as close to 'PDW" size as possible (discreet, small, light) so studies that include very short barrels are helpful.
Thanks for any help you can provide!
It's been awhile since I've seen a comprehensive study on barrel length, load, velocity, and wounding potential. Can you share any that you've seen in recent memory? My 'sweet spot' is going to be 5.56mm on targets within 100m, 200m at most. I'm really trying to keep this build as close to 'PDW" size as possible (discreet, small, light) so studies that include very short barrels are helpful.
Thanks for any help you can provide!