Originally Posted by bushmaster74
But it shoots the Remington's just fine but will check into the gas tube alignment
There are a few things that can cause cycling issues: worn bolt rings, (I replace mine every time I go to the range. You can get them really cheap if you buy in bulk at Brownells) buffer, cleaning-too little or too much, worn disconnector spring, and really rare is a bad batch of ammo, regardless of what brand. If I have multiple fail to cycle, I look at the firearm first. Also, you may want to look at the extractor spring. I usually replace it every thousand rounds. The reason I avise people to look at the gas tube is it is really easy to get it out of alignment if the teeth on the barrel nut aren't perfectly centered, as a tooth might end up pushing the gas tube to one side or another a tiny bit, and over time the tube is bent into the shape it is pushed, so some of the gas ends up escaping. I got lucky enough to watch a barrel being installed at the Colt factory once, and the tools they have to install the barrel to prevent this from happening are amazing, and not cheap either. Anyway, enough of my rambling
Once you get to know your rifle better, troubleshooting it will become second nature to you. Start with the gas system, and work your way out from there.