I have shot 10 groups of 5 rounds thru my 9L, which now has over 2500 rounds thru it.
The groups were fired off a sandbag at 15 yards. I measured the best 4 out of 5 shots,
center to center, to come up with a group size. The average of the 10 groups was 1.23",
with the best a .69" and the worst a 2.64" group. I am sure that someone with younger
eyes (super senior next year), could do better.
The load was a Montana Gold 121 IFP over Universal.
I have found that my M&P45 is more accurate than my full sized M&P9, and the 9L is a little
more accurate than the M&P45. All of them are more accurate than I am.
I would post some pdf's of a couple of the groups, if I could figure out how!!