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To answer the question, two P proofs are not required for an IP to be considered correct.
I assume someone wanted this specific IP receiver and doesn't want to build it for someone else? Perhaps the serial number was wanted? How many people own an IP? If someone has one, does everyone ask if his barrel is an Underwood?
Last edited by tenOC; 05-23-2014 at 08:02 AM.
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05-23-2014 07:56 AM
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Originally Posted by
Rustship
Exactly, if your going to build a mixmaster, why spend the money on an IP receiver. You would need a 2 or 3 of 43 barrel with P proof 6 1/2 inches down for a restoration. Try to find one of those !
George has a bunch of them 
Bill Hollinger
"We're surrounded, that simplifies our problem!"
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Originally Posted by
tenOC
To answer the question, two P proofs are not required for an IP to be considered correct.
So by March 1943 the requirement that the free issue barrel manufacturers proof 100% of their barrels had been dropped?
TIA
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Originally Posted by
CrossedCannons
So by March 1943 the requirement that the free issue barrel manufacturers proof 100% of their barrels had been dropped?
No
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Thank You to BrianQ For This Useful Post:
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Thankyou. I've seen your "snippet" regarding proofing requirements by barrel manufacturers, but it unfortunately lacks any temporal data.
When was this first proofing transition of free issue barrels, from "100%" to "10%"? Later, I understand it went to 5%, and then back to 10%, but I'm really interested for now in just the duration of the first period, namely 100%, when 2 P's would have been "the standard"
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Last edited by carwashchris; 05-23-2014 at 03:31 PM.
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The one with the correct barrel went for the least. Just depends on who is watching I guess.
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Future note to self see WB3 p 1675
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Can you help with what it says?
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Basically, you were right, 10oc, that 2 P's may not be required for an I-P "as built" configuration. In January 1943, the free issue barrel proofing policy at time of manufacture was changed from 100% to 10%. I was thinking that happened a little later, but didn't "know" for sure
Last edited by CrossedCannons; 05-23-2014 at 06:03 PM.
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I had that receiver on my watch list just for the education value. It seems high compared to the 2 
