check this out....
http://www.firearmstalk.com/forums/f...s-guide-59600/
a bull barrel is great, but heavy. Unless you are trying to get teeny tiny cloverleafs, I thnk they are way too heavy.
I personally like LW barrels, great accuracy, for under 300 yard applications. They don't like mag dumps or full auto shooting, but in this day and age, that kind or shooting is way to rich for my blood. Ive taken a few carbine courses, mostely 50 yards and under shooting, and they hold up well, faster on target, faster transistions, and at the end of the day, my arms thank me. With heavy breathing under stress, a pound at the end of the barrel makes it that much longer to get and stay on target.