Effect of hot/Tokarev loads on Broomhandle???

[sheepherder]

I recently bought a pretty beat/parts M1896 Mauser Broomhandle, and after taking it apart, I found some odd "fixes" applied by previous owner(s)...

There is a 1/16" hole drilled into the barrel extension...

(first pic)

...And the bolt stop slot is pretty hammered...

(second pic)

...And the most confusing (and alarming), the barrel extension lug has been brazed...

(third pic)

Now, if the bolt stop slot in the barrel extension (like my pic shows) is hammered back that far (presumably by hot and/or Tokarev loads), will the lug on the bottom of the barrel extension get hammered back as well???

I have examined everything carefully, and likewise examined my M1930 which is *not* hammered, and I am pretty well convinced that the brazing was to add metal to the front of the lug where the locking block pivots...

I won't attempt to shoot it this way, and I do have another barrel extension on the way from a Forum member which is not hammered like this one. But I'm really curious as to *why* anyone would braze up the lug on the bottom...

The lockwork looks good; the grip frame is in pretty good condition; and I already have a barrel section ready to go on the newly acquired extension...

But I've never encountered this "fix" before...and the hole in the barrel extension really stumps me...

I've posted this over at 1896Forums as well; no one has any idea why the hole was drilled or the brazing applied...

Any thoughts or WAGs???