I’d still like to see the one minute challenge. As long as I’m not paying for the ammo! (There were some real advantages to being in the military, at times.)
That’s just twenty 30 round mags in one minute.......mags stacked for easy reach, shooting one handed from a rest like a standing over barricade position with the front hand guard resting on said barricade. Counting rounds so that # 29 was followed by a mag change to preclude bolt release slap or charging handle manipulation etc .
I think it could be close, for someone who shoots a lot, disciplined, thinking .......:o)
I am almost out of vintage 1994 surplus. Maybe two or so cases left .
I may give it a try