My first Omega would shoot OK with sabot/pellets loads, but the 348 grain Powerbelts with 100 grains of T7 hit low and the rear sight could not be adjusted up enough to get it sighted in. I wound up making a stainless steel spacer to raise the rear sight about .105". My current Omega is fine - the lighter sabot bullets with magnum charges are sighted in with the rear sight near the lowest setting, and the heavier conicals with 100 grains of powder are dead on at one of the higher settings. You may need to play with height of the front or rearsight to get an acceptable zero.

I'm somewhat surprised to 295 Powerbelts shoot that much higher than the 300 grain Shockwaves. Would expect the impact to be pretty close with the same powder charge.