I shot some 244 grain slugs today in my Will Piatt tuned single tube.On a 3000psi fill they averaged 728 fps with 287fpe.The Hornady 145 grain average 900fps and make 260fpeThe tune makes these guns excell
supertech77.....Not sure this is the right place for this question, but.......On my 290cc Sam Yang 909 Light Hunter I've shot several different bullets from .452 230 grain rp, 456 350 gr fp, 454 200 gr hp (decent but not great), 454 180 gr rp (not as good as 200 hp) but the only one I have been able to get CRAZY good groups with are the .457 143 gr round ball (which Pyramyd Air says NOT to use in this gun) I mean I can get 10 shot groups all day long at 40, 50, to 65 yard 1" groups. Gun is totally stock. Any way you can give me an education as to why, and if I will hurt my gun using this oversized ammo.Thanks in advance......Rick