I have fired thousands of rounds resting on the magazine over many years. If there is a problem it is usually the magazine, so either mark it or toss it. If I ever have a problem with a magazine it gets tossed (what I mean by tossed is rendered unusable and turned in), I have that luxury. You gotta remember that magazines, although not cheap in price, are cheap in quality and you can't treat them like a solid bipod. In other words don't jump down on them and smash them into the ground. You just have to look at it like this, they were meant to be expendable items.