Well good thing you didn't say tier!The Annoyed Man wrote:My current AR barrel is a 1:9, and it shoots 55 and 62 grain bullets with reasonably good accuracy.......not match accuracy, but good practical accuracy. Since I stock M193 and M855 ammo in bulk, that is fine for me. And I've had no trouble finding 55 grain soft points for it for HD use. Also, there are a couple of good handloads I know of using 62 grain Sierra Gamekings.
That said, and although I don't feel "underarmed" by virtue of that barrel, I am probably going to go back to an M4 profile barrel (the current one is an HBAR) in the next year or so, and when I do I'll buy a chrome-lined (just to tick off Sputz) 1:7 barrel. Right now the heaviest bullets I can shoot reliably are the 68-69 match bullets from Sierra or Hornady. It would be nice to have access to reliable use of the heavier bullets.
I'm trying out adams arms melonited barrels mostly because I wanted a pinned on gas block instead of a bolt on one for my pistons and it was easier to just order both from them. Its pretty nice and pretty darn accurate. But then again Im not a milspec monkey or I would have stayed with di. Both middy and carbines I built out of spikes uppers and lower receivers.Sputz