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Challenger Arms Corporation Plainsman (CO₂) Pistol

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jackssmirkingrevenge:

--- Quote from: xcalibur on June 14, 2023, 01:12:32 PM ---You have to keep in mind, though, that the receiver is also a 70+ year old zinc alloy casting that may or may not have flaws or zinc rot. As you probably noticed, there's no steel threaded insert inside. The casting itself is threaded to accept the tube and valve nut. There are only five full threads on the valve nut, so it seems plausible to me that 1800PSI, pushing rearward on the valve, might cause those few threads to fail at some point.
--- End quote ---

Wise words indeed, and after having "proofed" it I don't see myself using it beyond 1500 psi, which is approximately "left in a car on a sunny Summer's day" CO2 pressure equivalent.  You're also right that it might one day be passed to someone else without the requisite warnings so some sort of marking is in order.

DWTrull:
Can you verify if the barrel and gas tube are steel or bronze with a magnet.
They both appear to be steel.

jackssmirkingrevenge:
I'm almost certain they are steel but will confirm later today.

jackssmirkingrevenge:
Testing with a magnet I can confirm that both barrel and chamber tube are steel.

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