(1) I remember putting 5,000 rounds of 9mm out at Borden one day. Wore out the sear in a perfectly good Sten, but it was fun.

Went through a few thousand rounds of .303BR on another day, Lewis and Bren. Won't even get into the MG 34 and MG 42...
I was in before the C7 came in, but did get to fire an M16A2... thought it was a piece of crap; the AR-10 and FN C1A1 were my favourites. The C2 was awkward but useful, albeit with the same limitations as the BAR.
Call me a glutton for punishment!
(2) IIRC, when SUNRAY MINOR was on his machinegunner's course, he was given a pallet of ammunition and told not to bring any of it back at the end of the day. My kind of order! Blowing stuff up and shooting machineguns is about the most you can have with your clothes on...