On range tomorrow got a M3 .30 700mm barrel and slug power kit fancy Zan 54gr any good starter FPS please. Also taking my M4 .22 800mm thinking 40gr or 34gr again any starting points for FPS. Cheers in advance for any input Simon
New to site hi guys !!! Question I have the m3 sniper in 30 cal FAC . I'm shooting 44.5 grain FX slugs and am getting speeds of 830 fps the gun is super accurate but want to up the grains to 54 so more fps needed ? Will I need to get any mods ie slug kit hammer upgrade or is the gun ok to up the...