the best in my gun are beeman field target special and crossman premier domed, under 3/8" for 10 to 15 shot groups!! and can use the same scope settings, beeman kodiak and the polymer tipped predator's also shoot under 1/2" consistanly but shoot low and left for the kodiaks and and left about an 1" for the predators! If I shoot 5 shot groups the special field & the premiers will usually do a 1/4" or better for 5 shots, kodiak's and predator's 5 shot groups usualy run 3/8" to 1/2" hope this helps I bought a lot of different pellets and these are all I will use now. I'm getting this kind of performance off a bench and using 10 power setting on my scope which has adjustable paralax, on a calm to light breeze day. I like this gun!!!