I shoot 300 gr Hornady SST bullets with 150 grain of triple 7 pellets out of a knight KP1 and get really good groups at 100 yards. I havent tried sighting it in past 150 yards but with this load I feel good out to 200. With some extra practice and shooting loose powder I think 300 would be an option.
I dont get much drop out to 100. Must be the 150 grains of powder.
