Well, I went and did it, heres what I got =Decidedon the TC Omega.50 Cal SS, Thumhole and Bushnell 4200Elite 4-16 x 40 scope. I plan on sighting in this weekend and start with the 250 and 300 Shockwaves. It seems most are using 100-130 grains of powder, dont see much about 150 grains. Seems as though this load is performing well in most cases. Im curiousabout the comparison of what 130 vs150 grains (pellets) will do accuracy wise at the 200-250 yard mark, using 250vs 300 Shockwave results.Some seem to have had better accuracy & tighter groups at 200-250 yds with the 300 Shockwave, but cant remember the powder charge data.