The BAR is not a typical action used for long range shooting, not at least if you care that you hit what your shooting at.
Thats a bullshit statement! I got a BAR 7MM and its a tackdriver! It's not made to shoot 300+ yards it's a hunting rifle! not a target rifle. I shoots very well for a auto. If you want a auto to target shoot with go with a AR10 My BAR is good up to 300 yards easy. It's a older model I got a Leupold mk3 on it. Nice rig just a little heavy.
Sorry guys but the origional post said long range targets. That would be something well beyond 300 yds. Suddenly you develope a need for heavy bullets, which the BAR might not stabilize well. Out at 400+ yds, the world changes. If you have one that shoots well at long range targets, count yourself lucky. Give some 160gr match bullets a try and see how you do with them at 500yds.
What does "gauge" mean anyway? As used here gauge means the number of round lead balls the same diameter as the inside of the barrel (aka the bore) that it would take to weigh one pound. It takes 12 lead balls the same diameter as a 12 gauge barrel to weigh a pound. The smaller 20 gauge would require 20 balls of that barrel diameter. The larger bore 12 gauge would require 12 lead balls of the bore diameter to weigh one pound.
In general the number of pellets in a shotgun shell...