I've ran 60s and 10/22s, but never really had stellar accuracy. I had one 60 that shot fairly decent with CCI green tag, enough to win one match I shot it in(factory, sub $200 class).
My Remington Speedmaster is very accurate with CCI mini mag HPs. Sub 1/2" at 50, plenty good enough for me. OTOH, my Rem Pumpmaster is not nearly as accurate as my SM.
One thing to be wary of on the SM is to be sure to thouroughly clean the chamber after shooting shorter loads. The fouling will accumilate and can cause LRs to stick just short and the rifle WILL fire and blow the case out. I've had it happen twice and it can be a PITA to get the case out of the chamber when the head completely seperates. Not to mention it's a bit rough on the ears.
