Originally Posted by Drew Hause
Brent: what is the end-of-chamber wall thicknesses of your 2" and 2 1/2" guns? And DOM?

Under the 1954 Rules of Proof 2” chamber guns MAY have been proved for 2 3/4 tons = 8,193 psi max. service load. Vic is looking into it.
It looks like it's in the mid to low 0.08s on the right and a little thicker on the left.

My understanding is that some of the real early guns were proofed at 1.125 ounces as if they were 2.5"/1.125 oz guns because the proof houses were caught off guard without a standard for them. Later, the proof was dropped to 0.875 ounces. I have never heard what the pressure levels were.

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BrentD, (Professor - just for Stan)

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