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Old 01-16-2021, 09:34 AM
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steelslaver steelslaver is offline
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Originally Posted by SweetMK View Post
I decided that the S&W offering in 500 Magnum was too heavy,, and 4" was too long for the barrel.

SO,,

I had this the barrel and cylinder of this gun rebored to 500 MAGNUM.



The "Safety Lock" was converted to a cylinder lock.
After loading,
the new function of the lock is to keep the cylinder from flying open when the higher powered 500 Magnum round is fired.
The conversion of the lock function from passive, to active took 3 days of design effort, and 2 days of CNC programming,
and two days of tooling design, and part manufacturer.

Due to accurate CNC 3D modeling, the actual parts worked to perfection the first time.

All new parts that were added are made of precipitation hardening 17-4 PH stainless steel.
Final heat treat of those parts take about one day of actual oven time.
A 0.000001 TORR programmable vacuum furnace was used for the heat treat.

The one exception it the actual tip of the locking pin.
The tip is investment cast MetalTek RENEŽ 77 Centri-Vac Nickel Cobalt Based Alloy,,
the only material that I could find that would hold up to the 500 Magnum full power cartridges.

The "Key" for the cylinder lock dangles from a titanium chain that connects to the lanyard loop.
This picture was taken before the titanium chain arrived from Gun Broker.

NOW, I have the perfect backup carry gun.

You do not want to see what my main carry gun is,,,
and, do not ask how long the main carry gun took to develop,,,,,,,,





LOL, Nice write up. How did you keep the 500 chambers small enough to fit 6 of them in a N frame cylinder??? I couldn't even get 5 to work in mine, so I shortened a 5 shot X frame cylinder so it fit one of my N frames. I had to relieve the top and bottom of the frame window a bit. I used model 329 Scandium alloy frame with the plug and replaced all the cylinder lock up springs with stronger ones and added a double ball detent lock to the yoke. I had to fashion an over sized thumb piece so I could push it hard enough to open the cylinder.

Recovery time between first and second shot is substantial as I am still waiting to get the cast off.

Last edited by steelslaver; 01-16-2021 at 09:45 AM.
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