DarylS
(.700 member)
28/12/11 05:02 AM
Re: The best Mosin sporting rifle project in world history

I forgot to write down the 'x' bar = 'x' psi multiplier - anyone remember it?

Dividing 57,000 by 3,400 gives 16.76 but that is not the number provided (I don't think) in the other thread - or was it this one?

57,000 is the CIP PSI given for the 9.3x54R on the chart I have.

My chart also shows the 9.3x57 to be loaded by Norma at 43,000PSI. Working backwards from the above listing in bar, the 16.76 multiplier gives 43,566 at the 9.3x57's pressure. Close enough, I guess to my chart. Note the 9.3x57 does not have any CIP standards however we've come to use 8x57 data and headspace for it. The 8x57's pressure is not used for the 9.3x57 as the 8x57's max. pressure is 57,000PSI CIP.



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