My dad picked up one of these a few years ago and I was looking at the ballistics... WOW! This thing is a machine... it pumps out a 140 or 150 about as fast anything except for the big boys.... Anyone using this gun for LR shooting? Hunting? I assume its good on deer and lope clean out past 1000.... be more like a 600 yard or less elk gun though wouldn't it?? I am considering rebarreling/chambering my 721 for it.... Thanks for you .02 worth!