One more reason I want to learn how to run a lathe and mill, edited (and updated)

The CZ Vz52 pistol perplexes me.  I like the idea behind it:  7.62x25mm in a full-size service pistol, practically CCW-able, and not Soviet.  Its lines are more art-deco 'ray-gun' than 'peasant woman' like the TT33 and its Browning (PBUH) predecessor.

The roller-lock is bad-ass.

But the drawbacks:  eentsy sights, which can be corrected if you grit your teeth and say permanent good-bye to its collector milsurp value.  European magazine release.  A cast firing pin (aftermarket pin and retainer do improve the trigger pull).

The biggest negative:  engineer Clark shows how the roller-lock pathways cut into the meat of the chamber, weakening it to the point that its roller lock gives it no power advantage over the Browning swinging-link unlock in the TT.

And yet . . . .  if one could chamfer about the topmost millimeter from the rollers, and mill the topmost millimeter and a half from the roller cam, and machine a new barrel whose roller pathways did not pass the entire frigging way from one side of the barrel trunnion to the other, then you'd have a barrel without a dangerously thin chamber right under the barrel and directly above the trigger finger.  And you'd have a pistol that could tolerate the chamber pressures of modern PPU 7.62x25 ammunition. 

Then maybe it would be worth it to work a thumb-button magazine release into it.  And something to warm the hearts of pistol historians, if US law would just get out of the way:  a detachable shoulder stock. 

No, I'm not giving a rat's ass about collector value on a milsurp pistol.  I've WECSOGged nicer stuff than my 52.  Besides, I have only 1 real safe-queen, my Dad's S&W M17, bought new in 1949, his wedding present to himself. 

Update:  We've been reading up on silver brazing, and how it's a fairly strong technique for joining metals but will not risk the temper in steel.  So perhaps a slip of steel, say 2mm thick, shaped like the channel in the trunnion, could be quenched, then silver-brazed into place in the top of that channel.  There would then be much more steel on that bottom wall of the chamber.  Some metal would still have to be removed from the top of the roller cam, to clear the added metal.  Safety-Silv 56 flows at right around 1200 F.  

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