Im having issues with a .300 blackout LMT MRP feeding. Most of the time trying to load first round off a mag, bolt will not close all the way and gets stuck and I have to slingshot the round out. Tried various mags and all seem to do it. Once I can get one round to load, the gun seems to run ok. I removed the barrel and the feed ramps look weird to me, almost like they’re not large enough for .300 blackout and they didn’t get machined all the way? Tried to google it but can’t find another .300 barrel that looks like mine. Sorry for the shitty picture. Anyone with a .300 MRP barrel that can confirm theirs looks like this or not? Thanks for the help.
