06 October 2023
Awesome, I never did dig into the CIP other than when I started to mess with Quickload. I'll add those numbers to the list!
What I don't know, and I guess you all do, is that, is the 19,942 psi proof pressure for CIP test equipment results or psi test equipment results or cup test equipment results? Would the following be correct in leman's terms?
If you use CIP results, you can not compare those results to PSI or CUP. Hypothetically, if we use CIP 15,954 as cartridge max, 15,945 cip is much higher than 13,000cup. This means that 19,942 CIP would have to be somewhere between 23,000 and 30,000 cup.
Did I get lost?
44-40 cartridge used in Europe
- CIP minimum Proof pressure 19,942 psi (cartridge?)
- CIP Machine loading limit 15,954 psi (Cartridge Max ?)
Compare that to American dated 1917 by Winchester Cartridge Engineering.
44-40 cartridge used in USA
For the Winchester 73'
- CUP minimum avg. Proof 16,500 lbs
- CUP service avg. pressure 13,000 lbs
For the Winchester 92'
- CUP minimum avg. Proof 23,500 lbs
- CUP service avg. pressure 18,000 lbs
Is the CIP psi of 15,954 equal to 13,000 cup or 11,000psi? Is CIP a strain gauge test that is applied in a different location on the cartridge than the American PSI test?
I do not have a complete understanding of the terminology used.
Is the Uberti Revolver tested for these pressures or just the ammunition?