CETME - all kinds of mayhem

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You know, the HK green book doesn't mention grinding the bolt head when it discusses bolt gap. Maybe that's an indication.

A ground bolt head is not in spec. That should be the end of discussion on that topic.

If you can't get proper bolt gap with an in-spec bolt head, rollers, and locking piece, you have to look at the trunion and barrel.
 
Rbernie, I can tell that you like to present your views on this subject but do not want dissenters to express their opinions. I wonder why? I thought that one of the major purposes of a discussion group was to present a variety of opinions. My qualifications to talk about the Cetme are at least as good as most of the other commentators. I have many firearms, I have shot them, I have worked on them, I have gotten them to work, etc. I have a good familiarity with FALs (I own three), Saigas, standard AKs, Mini 14s, SKSs, AR-15s, etc. I own two Cetmes, I have gotten them to work, I have bought and replaced Cetme parts, and I have read everything on bolt gap and ground bolt heads that has been posted on the Internet. I am not an expert but am as well versed on these issues as those who are telling people to rebuild their Cetmes. I think I have as much relevant knowledge of the Cetme, as, for example, the 23 year old man who is not a gunsmith but who is constantly advising others on all of their Cetme problems on multiple websites. At any rate, interested people can read my messages as well as those which express contrary opinions and judge for themselves.

I am not offering gunsmithing advice; I am disputing the views of unqualified individuals who persist in making the same claims over and over without any support whatsoever. If someone gets a rifle made by Century, and it works fine, and is under warranty, there is no reason, in my opinion, to listen to every self-appointed expert who wants to tell you that your rifle is unsafe, that you must replace parts, that you must rebuild the rifle, etc. The burden of proof is on those who are making all of these claims. The burden is on those who are advancing the positive view. I am merely pointing out that they have not made a case. And you haven't done so either. By the way, if you do your research, you will find that there are several qualified experts on roller-delayed blow back rifles that support my position. I have cited them and quoted their statements in several of my posts on this subject. My opponents have yet to cite any authorities. And they cannot cite any examples of blow-ups or case separations caused by ground bolt heads nor can they explain logically why there could be any danger in using them. If you and your colleagues would limit yourselves to saying that you PREFER to repress barrrels or replace trunnions rather than use a ground bolt head, I would have no problem with that.

Drakejake
 
I can tell that you like to present your views on this subject but do not want dissenters to express their opinions. I wonder why?
I would honestly prefer to NEVER have to type another line on this subject. I just can't stand on the sidelines and watch folks be given advice that may be wrong simply because it appears to please the ego of the writer to be heard.

I admire your desire to understand things, and I absolutely respect your right to hold a personal opinion. But no matter how you spin it or try to portray yourself as the honest David pitted against the corrupt Goliath, in the end you are giving gunsmithing advice that you're not qualified to provide to folk that can get hurt if you're wrong.
If you and your colleagues would limit yourselves to saying that you PREFER to repress barrrels or replace trunnions rather than use a ground bolt head, I would have no problem with that.
First, it's not like anyone here is a colleague - we're all just folk linked by a strand of wire. Secondly, we DO say the absolute truth - that there are proscribed maintenance procedures to address an excess or absence of bolt gap. That's when you leap in and decide to tell folk to disregard the HK maintenance procedures and do it your way.

By the way, if you do your research, you will find that there are several qualified experts on roller-delayed blow back rifles that support my position.
No more qualified than those who disagree. And in the end, the manufacturer disagrees with you. What is there in that statement that rankles you so strongly?

By your own experiences, even Century Arms is disavowing this practice.

The burden of proof is on those who are making all of these claims. The burden is on those who are advancing the positive view.
You are incorrect. You hold the burden of proof, since you are recommending that folk disregard accepted armory practices as established by HK in regards to this action design.

In retrospect, I think that I have now said all I need to say on this subject. I cede the thread to you.

Best of luck with all that.
 
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