The groups opened up at 57.7grains this time and previously. I am pretty pleased with these groups. I think I am reaching a point of diminishing returns.
I also noticed that the groups tended to open up if I didn't "hold" the rifle. It seemed that if I let it recoil freely, the shots moved or opened up on some of the hotter loads.
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This is what I have found with both of my kimbers. When I grip them the loads are very consistent. When I just sit behind the rifle and pull the trigger groups open up with some really odd fliers.
