I have not shot my TC Omega Stainless in several years. I was shooting 777 .50 caliber pellets (three of them) with 250 grain TC Shockwaves and getting 1.5 in. groups at 100 yds. It was fine for whitetail deer in the south where I hunt. I am going to Nebraska this winter to hunt whitetails and since it has been so long since I have shot it I was wondering if I should try some new loads. They made single shot rifles primitive weapons here in MS several years ago so I am behind times on the muzzle loaders.