My 52 will shoot much tighter than my 952, or so it seems. It may just be a case of finding the "magic bullet/load", but I haven't found it yet. The 52 will hold the X-ring of a B-8 at 25 yards, the 952 will hold the 10 ring. It's not just me, though; several co-workers have fired both, with the same general findings, if not group size. I've tried various 115, 124, and 147 loads from different mfgr., but have not found one yet that will do the trick.