.32 rimfire

[uscra112]

Did you somehow manage to change the angle of the firing pin channel without first plugging it?

[pietro]

Did you somehow manage to change the angle of the firing pin channel without first plugging it?

I didn't do anything like that - I simply marked the breechblock face for the CF firing pin hole via a sharpie dropped down bore against the closed breechblock & drilled the new FP hole in the breechblock with a 1/16" sacrificial drill bit, then ground the face of the original RF firing pin face flat and reinstalled it in the breechblock to drill a 1/16" dimple/hole through the new hole into the flat FP face to mark it for the new FP.

I again removed the FP & finish drilling the FP face to about 1/4" deep for the new FP - which I made from the shank of the 1/16" drill bit (why I referred to it as sacrificial), ground to length (for proper protrusion from the breech face.

The new FP tip was then epoxied in place ( I didn't want to bother with soldering it in)

The .32 Short Colt chambered readily in the .32RF chamber & fired w/o any issues.

E-Z-Peazy........


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[uscra112]

Does not compute. From .32 RF to centerfire, the tip axis has to move about .170 inches. This places it well outside the circumference of a #4 firing pin body. The firing pin would have to be over .400" diameter to do it that way. Might work for the full size rolling blocks, but not a #4. The drawing below shows the layout for a Favorite, which has a pin body diameter of .200". The #4 pin body appears to be even smaller.

[pietro]

.

Theory is one thing, reality another...........What can I say - I didn't have any "technical" drawings, so didn't know it couldn't be done.

So I just noodled it out & did it, and it worked.

[uscra112]

To a #4.