Magazine Reliability

[noone]

The P-mags I have for my AR-10 style rifle don't allow me to seat bullets as long as the metallic ones will. I think it is because the plastic mags have to be thicker for strength, so the inside dimensions aren't as long as the metallic mags. As overall length is critical to accuracy, I would only use P-mags for the Grendels (if they were even made) if the mags had the same inside dimensions at metallic mags. I just don't want to give up the bullet seating length just for P-mags.

P-mags work fabulously well, and don't require any smoothing of feed lips to insure reliability, but I get hung up on the available overall cartridge length issue.