Great post Vin
in some tests(all 177) i've done recently using tx200, hw100 and bsa ultra x2 and the pellets being hobbies, r10match x2 sorts , matchpel and supermags, all the results bar one was in the 3/4'' in region at 25 yards.
The one outstanding combination that was grouping under the thickness of a biro at 35 ish yards (well go on then,nearer 30)were rws supermags out of my hw100.
The only 22 i've personally exper ienced that shot wadcutters well was a hw99 i had a few years back. Only 9ftlb with hobbies but superb acuracy to 30 yards or so, as an aside it also shot the rws superhollowpoints supremely.
glad to be back