I got loose with an M16 with a Beta-C mag and a S&W M-76 the first weekend in May. Had a .303 Vickers there but it was just converted to .303 (from 11mm something) and he did not have the bugs out yet and it did not work well so I didn't mess with it.
Also had 2 M1918A3 BARs (semi-auto version) and 1 each M1919A4 and M1919A6 semi-auto Brownings. A4 is on a tripod and A6 with with bipod and buttstock.
Couple of weeks after that SurplusRifles.com had a shoot in Deifiance, but I did not hear about it till the night it was over with.