I think usually the problem is not the round. The problem is a filthy gun that got filthy because it runs on direct impingement. That's fine on a range. In a battle - not so much.
But you can't really run it that wet in a sandbox. And we seem to be crawling around in a lot of sandboxes today. But you are correct - most problems are magazine related.
Is KF correct?
[video=youtube_share;JHSSO-vJTSs]http://youtu.be/JHSSO-vJTSs[/video]
"THIS" can be done with a finger with the original forward assist Stoner devised (the depression in the bcg).
The forward assist is Big Army's fidget spinner. People want a gadget, a geegaw, a button to push (we as primates love toys) and Stoner, with objection, gave them one.
The designer of the weapon saw no use for it. USMC and USAF did not want it, but Big Army was buying in warehouses so it exists. It's not needed; it is politics.
It can be harmful to you and the weapon. But if the fidget spinner makes people feel better, have at it.
I use one on a regular basis. I coyote hunt with a AR. When I get to my hunting area, I ease a round into the chamber with the charging handle, then ensure the bolt is closed with the FA. The AR I use for that usually closes the bolt on its own, but the one time it didn't was all it took for me learn that lesson. I could use the carrier cut out, but with gloved hands it isn't that easy. That was another lesson learned the hard way.