Some pretty nice groups. What bullet and weight and what primer are you using? With my Ruger I find the best groups with 130 gr ballistic tips is 63.0 gr of I4350 ( max load ) with Wlrm primers. For the 140 gr bullets it seems to like it a little slower. I wouldn't give up on 4350 yet. It's a lot easier to find the 4350 than the magpro. You might just need to do a little more work.