I cannot for the life of me get 300gr XTPs or MZs to shoot better than a 2 to 3" group @ 100yards. Ive tried AA5744 @ 44 and 45gr. I also tried N120 @ 57, 58, 59,and 60gr. I even tried waiting 10 min between shots in 50 degree temps. The funny thing is,all these different charges and the two different bullets shot all the same 2 to 3" group. I use a RW .33 vent liner, Warn bases (double checked to make sure screw was not too long) and QR rings, and a Leupold 2x7 scope. Could it be possible that my gun does not like 300gr bullets? I got some 250gr XTPs and MZs to try this weekend. Where is a good place to start with AA5744 and 250gr bullets?