LRRPF52 Wrote:I'm not so concerned about broken bolts, since that is a design failure the guys made when they scaled down the AR10 to the AR15 and went whimpy on the bolt geometry for the .222 Special/.223 Remington. I am more concerned about case failures from over-pressure. Both the Grendel and AR15 in 5.56 need stronger, beefier bolts closer to what an AR10 is.
LRRPF52
I've discussed this issue at length with Bill Alexander and several other AR guys. They all are in agreement that if you beef the bolt up, you'll create a failure somewhere else, and that failure might be much more dangerous to the user than a bolt failure. As it is, when the bolt fails, any damage tends to go out the bottom of the mag well, which is a generally safe place to go, versus back toward the user, or out the sides towards friendlies.
I've yet to blow up a Grendel case, and I have cases with 20+ reloads on them. I've had neck splits, but that is a factor of working the necks so much, I think.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt