No sir, the o-1 in the annealed state should be just fine, as it is harder than the stainless rod, and will not gall with the SS hammer riding on it. . the rod is not pressed into the valve and slides right out. I will have to look at my notes, but seems it was 3/16 and turned down where it goes into the valve body and again where it is threaded where it is adjustable from the rear of the gun. the poppet pin was indeed 3/16 and taking far too much of the room for air in the valve body space. Lessening the dia. will instantly give higher performance . they were going for strength, however again. 0-1 or high carbon SS will be fine at a smaller dia. My suggestion was if wanting to keep the full dia, still switch to a different steel, and turn down the section that is actually feeding the port. the large dia. can be kept as the off center strike of the hammer will be harder on a typical tappet rod than usual. This off side system is used to be able to use a much larger dia. Pressure tube without making the breech huge!
OK, my bad, I did not measure it. I will tomorrow. Heading to bed shortly long night and day. LOL
I am out of the correct size of o-1 but may make one from fully hardened brass rod for testing. It should cure the galling for testing.
Marine, Wait a bit Sir!
And in no way (as Miss Victoria stated) am a a Genius. I've just been at this for a long time.
My wife had me tested, as in school I was terrible. Dyslexic, OCD, and always interested in what was outside or in the woods. Seems I was just barely border line in the IQ test. They obviously made a HUGE mistake.