Originally Posted by Crazycastor
I don't have the rifling of the barrel but I do know its a 20 inch barrel. I do know it will shoot .223 and 5.56. But I would think that any modern day AR15 type of gun would be able to handle modern loads. Wished I knew to look what grain the bullet was but didn't think about at the time. Do 20 inch barrels all have the same twist to them?
I stand corrected, who gets the 5 bucks?
Twist rates and barrel lengths are not necessarily tied together. I still don't think federal should be marketing ammo to the civilian market if it won't hold up to civilian firearms but I must recant my previous statements about velocity and rotation because that is quite a bit of difference.