I gave my son a Bushmaster A3 w/20" heavy chrome lined barrel/chamber for his 21st birthday. We had some fun with it, shooting with the aperture sights but now wanted to try to "see what it could do". Now we've got a Leupold 3X9X40mm mounted on it with ARMS #5 base and ARMS #22 throw lever rings--pretty nice. He's at college so I took it this weekend and ran over to the range and tried shooting it off a rest. I'm not a trained target shooter (I'm more of a hunter) and don't have great eye sight as far as that goes. Now, I'm talking 50 yards here, haven't tried 100 yard shooting yet. I'm finding I can reliably get a couple shots with the holes about touching and one within 1/2" of the others. For 5 shot groups the best I got was something between 5/8" & 6/8" at 50 yards. I could span the group centers with a dime. Shouldn't a good shooter be able to shoot tighter groups than that? I'm assuming this rifle should be able to shoot "minute of angle" groups at 100 yards, which is my goal......shouldn't it? Is there somewhat of a learning curve involved with figuring out the sight picture and breathing part of shooting tight groups? I'm shooting 55 grain FMJ Winchester ammo that goes pretty sheap--about $3.90 per 20. How much of a real difference would better ammo make in trying to shoot a minute group? Is Black Hills worth a try or is it really more me getting thru a learning curve of how to breathe and squeeze? Thanks for any help (rookie).