25 cal Impact Pellets?

Exclusively the MKII's

Both

I shoot both 25 kings and mk2 heavy in my 600mm x. Both are equally accurate. Have not try the mk1. Heavy shooting 840ish, kings shooting 940ish.

My 700mm likes the 34gr MK1s. Currently have it dialed for 880fps. The MK2s seem to group dang close at the higher speeds but lower velocities my barrel defiantly groups the MK1s better 830-850fps than the MK2s. Haven’t even seen what 25gr does in this setup.

Ditto Shinyknight. Wind @ distance being determining factor

Havent tried the 34s yet but shoot the 25gr Kings at 930fps. Wind still messes with them at what I consider close range (50 yards). Will give the 34s a go soon at long range. I shoot at least a tin a week and Impact X loves them.