HW/Weihrauch Ok Weihrauch Airgunsmiths, I need some advice... HW35 Barrel Latch Worn

You got me wondering, so I just checked all mine with a good whack to try and break them open.
Years are 1956, '59, '68-69, late 70's, and a 1980. That's five HW35's and none broke open when tested.
Yours doesn't look like it's been overly used, so maybe there's rust or crud in the groove impeding a solid lock.
Good point. I'm gonna' tear it down for a better look.
 
The barrel in the op’s picture almost looks like the barrel is rising upwards as if it was set off prematurely. This could have damaged the lock. Or maybe it’s not the original barrel. I’m sure back then these were hand fitted. Switching barrels could cause this. Like stated earlier this gun looks as if it was not heavily used. Could be just the angle.View attachment 578436
Its funny .. i try a straight edge off the picture and one time it looks ok then it don't . Kinda how its angled and pictored on that burlap looking stuff give a optical illusion effect ..

Just funky... Lol
 
Using "matched" levels to check

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The issue is a worn compression tube. The edge where the latch engages is rounded. Perhaps you've got a handle on where to purchase a compression tube for a 1770's vintage HW35, Frank...?
Chambers….but maybe not for 1770.
Of course the new compression tube would cost more than the rifle is worth.
 
American Welding Society convention in Cleveland Ohio circa 1997 or 98, I personally watched a fellow run a TIG bead up the side of a # 4 sharp sewing needle.

I myself have TIG welded .023 aluminum in my early sharp eyed days, now I am lucky to get a 1/8" 7018 to start correctly........
 
American Welding Society convention in Cleveland Ohio circa 1997 or 98, I personally watched a fellow run a TIG bead up the side of a # 4 sharp sewing needle.

I myself have TIG welded .023 aluminum in my early sharp eyed days, now I am lucky to get a 1/8" 7018 to start correctly........
Cheater lens or our friend these days ..
 
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I would start with a fresh and likely stronger spring within the latch assembly.
Then again a strong spring will also create greater wear as latch post rubs on breech face even harder ...

Sadly there is a time in any mechanical devices life span ... Where & When it's suffered wear or damage to be considered now Used parts & no longer serviceable. :cry:
 
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Maybe I'm completely missing something, but what is wrong with this airgun that makes it no longer serviceable and that needs to be addressed?
It looks like a nice old HW35E that's been cared for and maybe even little used, from the late 60's-early '70's, early pattern one side safety, pre Beeman marketing, above average stock figure?
 
Maybe I'm completely missing something, but what is wrong with this airgun that makes it no longer serviceable and that needs to be addressed?
It looks like a nice old HW35E that's been cared for and maybe even little used, from the late 60's-early '70's, early pattern one side safety, pre Beeman marketing, above average stock figure?
Barrel latch will not hold.
Still serviceable, but not 100% up to snuff as far as breech lock up?