Search found 41 matches

by mtnlvr
Tue Jun 01, 2021 10:21 pm
Forum: MG42 General Discussion
Topic: Pieced primers / primer flow
Replies: 6
Views: 1599

Re: Pieced primers / primer flow

Ahh, I see it now. Hidden in plain sight.

John, thanks for your contributions here and everywhere else to keep these guns running!
by mtnlvr
Mon May 31, 2021 11:38 pm
Forum: MG42 General Discussion
Topic: Pieced primers / primer flow
Replies: 6
Views: 1599

Re: Pieced primers / primer flow

I do see the 1.35mm min spec on page 65 of your translated HDv 181/7, but for whatever reason, I can't seem to find the gauge drawing. I bought a few of your translations a couple of years back. I'm still waiting for you to do a semi auto armorer's manual. Lol. The manual also mentions shortening th...
by mtnlvr
Sun May 30, 2021 11:34 pm
Forum: MG42 General Discussion
Topic: Pieced primers / primer flow
Replies: 6
Views: 1599

Re: Pieced primers / primer flow

What's the concensus on pin protrusion? 0.045“-0.057"?

And is it OK to file and polish the tip?

Headspace was checked a few years ago. I could check that again.
by mtnlvr
Sun May 30, 2021 6:50 pm
Forum: MG42 General Discussion
Topic: Pieced primers / primer flow
Replies: 6
Views: 1599

Pieced primers / primer flow

I've done a lot searching but can't seem to find ideas on how to fix this. I've always had some catering or flow of the primer into the firing pin hole, but today I had my first pierced or blown primer and a piece plugged into the FP hole. For the record, this is a reweld semi auto with a brand new ...
by mtnlvr
Thu Feb 18, 2021 9:10 pm
Forum: MG42 General Discussion
Topic: My semi-auto MG 42 journey
Replies: 3
Views: 1690

Re: My semi-auto MG 42 journey

johnb593 wrote: Tue Oct 20, 2020 12:12 pm Thanks. I just hope it will shoot!
Did it shoot?!?!
by mtnlvr
Tue May 28, 2019 10:20 pm
Forum: MG42 Build It Yourself
Topic: SA Roller Pin / Feed Stud Fit to Bolt Carrier
Replies: 0
Views: 1528

SA Roller Pin / Feed Stud Fit to Bolt Carrier

I tried doing some searching and came across a few build threads here and other places, but no where did I see the recommended fit for inserting a knurled roller pin into the bolt carrier. Looks like if I leave this set as is, I've got around .006" interference at the top of the roller stud, and .01...
by mtnlvr
Sun Nov 25, 2018 10:57 pm
Forum: MG42 General Discussion
Topic: Board down
Replies: 3
Views: 842

Re: Board down

Nice work! Thanks for getting on it.
by mtnlvr
Fri Oct 26, 2018 4:00 pm
Forum: MG42 General Discussion
Topic: SA M53 cycling issues
Replies: 14
Views: 3052

Re: SA M53 cycling issues

Are you feeding from a belt only? Or a drum? My 42 semi won't feed from a drum at all.
by mtnlvr
Thu Sep 13, 2018 8:40 pm
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

I did get the nose pieces swapped and that nearly eliminates the bind. There's still a little when I remove the recoil spring and slide the bolt all the what to the rear, but not enough to cause malfunction. I had a very successful outing with the MG42 SA and my father the other weekend. We put arou...
by mtnlvr
Tue Jul 31, 2018 9:20 am
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

The damn stickies! I read through them a few years ago but had forgotten all about them. Thanks for the reminder...very helpful. According to the sticky, the other two buffers don't have the groove cut near the threads like the German buffer one I posted above does. The German one also has a bit lar...
by mtnlvr
Mon Jul 30, 2018 3:34 pm
Forum: MG42 Build It Yourself
Topic: Damage to casing neck after shooting?
Replies: 8
Views: 2730

Re: Damage to casing neck after shooting?

I'll buy that. Your pic shows nice clean dents or caving in. The case on the right in his pic looks like it was crushed head on, sort of like it didn't clear the ejection port and the bolt ran into it or rammed it into the ejection port.
by mtnlvr
Sun Jul 29, 2018 6:18 pm
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

That is a Steyr butt stock. Pardon my lack of knowledge, but what marking is this on the buffer? Is that a Yugo mark? 20180729_160211.jpg If so, what do you mean that the Yugo buffer won't fit the stock? It assembles just fine. I have two other buffer and butts in various parts kits laying around. T...
by mtnlvr
Sun Jul 29, 2018 11:29 am
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

That's a significant taper! Not that I've seen a lot of semi converted MG42's, but mine doesn't have that much length ahead of the spring. I suppose I could reduce the diameter a little, but I'd rather leave it original if possible. And is that end piece of my buffer thru hard or case hard? I think ...
by mtnlvr
Sat Jul 28, 2018 1:47 pm
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

Another mostly successful day at the range. Fired ~50 rounds between two different ammunitions and it behaved near perfect. I did have two F2eject. This was caused by binding between the bolt carrier extension and buffer. It seems that I have excess clearance allowing for some rocking of the buffer....
by mtnlvr
Thu Jul 26, 2018 3:59 pm
Forum: MG42 Build It Yourself
Topic: Damage to casing neck after shooting?
Replies: 8
Views: 2730

Re: Damage to casing neck after shooting?

High speed photography would solve this question immediately. Try putting a rubber pad (piece of radiator hose or similar) on the front of the trigger guard to see if the brass is twirling into it upon ejection. That's what it was on mine, the rubber pad worked well. I also had the bolt moving pret...
by mtnlvr
Thu Mar 29, 2018 11:58 am
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

Thanks for that link robertmcw. I've been there several times in my various searches working on this project and didn't notice that was the grip stick. It definitely doesn't work with the original safety or panels as it sits. I'll have to see if I can modify it to accept a safety. I really don't wan...
by mtnlvr
Mon Mar 26, 2018 10:30 pm
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

I have not tried a different recoil spring but I'll see if I have another one for SA. I guess I was worried about the excess speed because, like you mentioned, most MG42 SA rifles have the opposite and I don't want it to beat itself up. Would a worn recuperator allow excess bolt speed? Mine takes ab...
by mtnlvr
Sun Mar 25, 2018 1:03 pm
Forum: MG42 Build It Yourself
Topic: Hammer follow
Replies: 48
Views: 10539

Re: Hammer follow

Getting closer. I don't get to spend a lot of time on this project. To clarify, I've actually spent a lot of time on it, just much time consecutively, more like a day or two this month and a day or two the next month. I got some good advice from BRP in that my bolt is running too fast. He gave two o...
by mtnlvr
Sun Feb 18, 2018 10:22 am
Forum: MG42 General Discussion
Topic: Something Special we have been working on...
Replies: 22
Views: 4515

Re: Something Special we have been working on...

Are there any reasons this wouldn't work in semiauto? Have you done any testing in a semiauto 42?
by mtnlvr
Fri Sep 22, 2017 11:01 am
Forum: MG42 General Discussion
Topic: Where to buy loose bolt head?
Replies: 7
Views: 2637

Re: Where to buy loose bolt head?

What about shimming the barrel extension to increase chamber length or machining the barrel's shoulder shorter to decrease chamber length to make it headspace with the various bolt heads?