Question about AR15 uppers
I bought a very inexpensive lower from Palmetto ($129). Now I’m looking at uppers and whoa boy, too many choices!
My big question is this. I reload and shoot mostly 55 grain projectiles. I read that the barrel ratio should be 1:9 for light rounds like this.
But I can’t seem to find many with that twist rate in a 16” carbine length. Would a 1:7 work just as well?
I’m trying to see if I can build one for less than $400 without optics. Seems possible although you ain’t gonna get a decent trigger.
What’s the deal with twist ratios? Is it really that important?
|