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The saigas are proofed and stamped by the proof houses. Therefore they should be held to the C.I.P specifications.
7.62x39, 5.56x45, 5.6x39, 5.45x39, 7.62x51, and 9x53R. Both 7.62x51 and 9x53R seems to be using the one side bulged trunnion, but we can't be sure.
I also threw in 7.62x54r, 6.5x52 Carcano, 6.5x54M.-Sch., and 6.5-284 Norma into the charts for comparison.
Edit removed 7.62x54r data too many diffrent pressure listings, but still dosn't effect things in regards to the 308 Vepr.