What encore are you shooting that you're getting" minute of deer at 100" with ? Just wondering I'm shooting a tc pro hunt and tc shockwaves over 70 gr by weight of bh209 and it's shooting inch groups at 100. I've shot it to 250 and can shoot a 3" spot pretty well all day long. As for cleaning bh209 is simple a little bit of hoppes on a patch and you're good to go. I did try a few other bullets and the shockwaves did out shoot the others but they were not horrible. Well under minute of deer