GunnyUSMC
Member
The thing is, most of the ammo I had problems with were 40gr and the one that worked the best was 36gr.Like I said, some people have had issues when using 36 grain or lighter ammo. I'm guessing it has to do with the bullet profile. What I do with every single new magazine is to load them to full capacity anklet them sit for a few days which seems to help. And the ProMag's do get easier to load with use. I haven't had any issues sticking with 40 grain ammo. Most people only load the ProMag's to 15 due to the fact that they are hard to load to 18.
But I’m going to clean them up before I give them another try.