Well, the board is either fixed, or it's going to run terribly. Cross your fingers and hope for the best. I'm at my technical limit right now.

CZ50 bore diameter

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Rapidrob
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CZ50 bore diameter

#1 Post by Rapidrob » Fri Jul 13, 2018 8:58 am

The cast bullet mold showed up yesterday and I cast 250 bullets to try out in Elaine's CZ50 pistol. These 75 grain bullets drop from the mold at .3125 and I sized and lubed them to .311.
I decided to slug the bore hoping that it was not .312 or larger. Imagine my surprise when the slug measured .3085! And that was the average of 6 reading using two calipers and a micrometer just in case.No wonder the pistol is so accurate.
The "tight" bore would never be a problem with the thin jackets of any .32 ACP bullet and cast bullets could care less unless the alloy was too pure and leading was a problem.
The more she shoots the pistol ( new springs really made a huge difference) the more I really like the pistol and the cartridge.
What have you fellow members found in the way of bore diameters after slugging?
Tin Can Sailor
'Nam Vet
NRA Endowment Member
President New Mexico Military Surplus Rifle Pistol Shooters

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