I really think your pushing that rifle too hard. 125 grains of 777 powder is a magnum load. Next time you go to the range, try 100 or 110 grains of 777 and the same bullet. See what happens. I am wondering if because of the large powder charge, your getting some uneven pressures when you shoot which is what is causing some to go high, some low, etc.

Magnum loads look great in adds when they sell rifles. But you take most of the shooting we do, a 100 grains is more then plenty power, better accuracy, and more kind to the shooter. Are you flinching at all? Are you shooting a scope? Just try 100 grains and see what happens and report back to us.