It is pretty amazing stuff for the money. I think it's best for the slower twist barrels that don't like the heavier stuff. My lightweight CZ won't group better than 2 inches with 55 grain FMJ, but it loves this stuff, 3/4 inch group averages for 5 shots. Couldn't ask for better from factory ammo. I wonder about the 3600 fps. claim though, I don't have a chrono to check it.