WIL TERRY said:
BUY'N'LARGE it cannot be converted as the cylinder is too short.
I have to take exception with you there. I've done three now and they all function exceptionally well.
The first was a two step conversion; 1st from 22 to 32 H&R Mag, then to 327 Mag'
Here's the 1959 vintage 22 Mag 'only' Single Six conversion to 32 H&R Mag with a factory barrel and cyl , cost $180. Reamer, $80. Gun, $200 some years ago less sale of 22 Mag cyl $75. Total cost, $385.
It has since been sighted in and the front sight shaped to a quick draw ramp, serrated with a checkering file, and blued.
Had to enlarge the loading gate chute slightly for the larger cases.
In these two shots, you can see where I plugged and re-drilled to lower the firing pin and recoil plate for center fire.
I have since reamed the chamber shoulder deeper to shoot .327 Fed Mags.
All conversions I've seen used a custom longer cylinder. Bowen and Dave Clements do this routinely and one of them even did a 5 shot .327 Ruger Bearcat! But Federal and American Eagle factory loaded cartridges are only .003 to.004" longer than the factory single six cylinder.
I received my Clymer chamber reamer from Brownells. They didn't have a 32 Fed Mag reamer and a call to Clymer verified that they didn't make one. But all I needed to do was extend the 32 H&R chambers .122" to Fed Mag length. So I ordered the 32 H&R reamer, ground the stop back .122" and reamed my chambers.
When I shot it, even though the Fed mags in the 85 Gr HP Hyrda shock and American Eagle 100 gr JSP loads were longer than the chambers, the .005" or so breechface/case rim gap was sufficient for the loaded cyl to rotate w/o interference.
I may not be able to shoot longer bullets unless I seat them lower, but so far my handloads all work just fine.
2nd conversion, a NM 32 H&R to 327. Same results as above.
3rd conversion was a 32 Stainless Vaquerito on Friday with the same success. Literally a 10 minute job.
Total cost for 2nd and 3rd, $0 since I already had the reamer.