llo all, I tried researching this question but came up empty. I have a Bulgarian Makarov that came with two magazines, and just ordered 5 more magazines which are Bulgarian made and still in cosmoline. So, I've got a total of 7 magazines for it. But how long will those last? If I rotate mags to spread out the wear, how many rounds will it take to weaken the magazine springs to the point of unreliability? I plan to get another 5 or so mags in the near future. I just love my new Makarov and plan to shoot it a lot. I am just very curious as to long term durability of the magazines. If anyone knows, please help me. Thanks!