I have shot both the 250 gr shockwave and the 250 gr SST over 100 grains of 777 in my 50 cal Omega and my results were that the SST's consistently hit higher than the shockwaves. No change right/left but about 2 to 3 inches higher at 100 yards. I am by no means an expert as to why but the SST's are harder to load. Perhaps the tighter fitting sabot of the SST allowshigher pressures to be created behind it. Some one else could speak to that better than me.