Hi: I'm an old hand gun hunter & i found out through trail & error;I started out first with the type of ammo. 130Gr.Rem./130Gr.Hornady/130Gr. silver tip Win.I SHOT A TC.Encore w/15" bbl.The best bullet i shot & grouped 1/2" highdead center @50 yr'ds.also put me @ dead center @ 100 yr'ds.Thats shooting with a gun rest!!I'm just pushing 70 years old & disabled,So i can't track a deer any distance, with a helper so far the longest one has gone on me is 50 yr'ds.with the LORDS help...[[email protected]] Oh that bullet is in a 270 cal.