My best groupings (I count an excellent grouping as a ragged hole at 40 yards for PCP and 25-30 yards for springer)
HW100K .177
Best: Weihrauch Magnums @ 10.2 grains (no idea head size)
Good: Weihrauch Select @ 8.4 grains (no idea head size)
HW95 .22
Best: H&N FTT @ 5.52
Very Good: AA Field @ 5.52
Rapid Mk2 FAC (32ft/lbs) .22
Best: Bisley Magnums (no idea head size)
Very Good: Weihrauch Magnums (no idea head size)
Truly, Terribly Awful: AA Field @ 5.52
B.A.S.C | HW100Tuning KT250bar+reg+tune .177+4-16x50 | HW95.177 +4-16x44 + Paul Short Stage 4 & Trigger Tune | TX200HC.22 + 4-16x44 | HW97KT.22 + 4-16x44 + Paul Short Stage 4 & Trigger Tune