Remington 125gr FMJ and a fifty round box of Winchester 125gr FMJ, plus an extra twenty rounds of the Winchester because having my round counts end in "80" was bugging me.
I have ordered 11-coil magazine springs and a 20# IMSI flat wire recoil spring from Lone Wolf just to do some tinkering around.
I then brought the target back in to seven yards and finished off the box of Remington. There were no further malfunctions.
63, #78, #126, #748) and four failures to feed (#221, #224, #282, #734). 1,200 rounds left to go.