300 WIN MAG pressure limits

C

CMaier

Guest
i have conflicting data and am asking for your input.
i have one max pressure as 62xxxpsi/4300 bar,
and a new limit listed as 64000psi PMax.

i had not seen nor heard of any recent changes in spec or how listed.
anyone else ??
 
my load work can...i think. i use software to develop
starting/ending points, and then watch the normal
indicators as i shoot. adding 2000 psi does open the
far end. in the case of the mk248 mod1 load it makes the
68100 limit a bit "less" of a plus p. since i do watch
all this stuff it was easy to see a "change" in data points.
you are correct in the actual mechanical end, i was just asking.
 
And then you get to average over M rounds and make sure you are at X% of the number with variation across the shots of no more than N%.

And then all the numbers have to be adjusted for CUP vs. actual Piezo PSI gauges.

And then you need 'standard' rounds to even start to 'calibrate' a Piezo system.

And make sure the amplifier chain for the Piezo system has suitable bandwidth to deal with the very short duration pulse while still being temperature stable.

I worked on a whole lot of this stuff (along with strain gauge systems) when it was just starting.

The typical 'instrumentation' circuits needed a whole lot of alterations.
 
yes but the question was..did anyone see this change ?
that is a 3% INCREASE in a 50 year old cartridge.
is this the original pressure and i have been reading tables
wrong ??
always possible.
 
When Remington introduced the Ultra Mag Series of Cartridges, the pressure was set at 65,000 psi.

Same rifle and the same head diameter as their 300 Win Mag. So there is no logical reason why you could not diplicate that pressure with no ill affects.

Truth be told, Shooters have been exceeding that pressure for years in either Remington 700's or Mod 70 Winchesters.

But as to your question, perhaps with newer powders, the powers that be decided it was time to give the old girl a face lift.
 
The spec is 64,000 psi SAAMI or 62,366 psi C.I.P.. C.I.P. is the European pressure measurement procedure which is slightly different than the SAAMI procedure and apt to give a slightly different reading when tested with the same load.

Description of C.I.P. procedure
 
i think that maybe where i was lead astray.
i use quickload software and it originates in germany.
the current version does show 64,000 while the past had shown 62,xxx.
most times they label the limit as saami or cip, in this they had not,
so i was lead to think there had been a change...there was not.
thanks all.

mtngun said:
The spec is 64,000 psi SAAMI or 62,366 psi C.I.P.. C.I.P. is the European pressure measurement procedure which is slightly different than the SAAMI procedure and apt to give a slightly different reading when tested with the same load.

Description of C.I.P. procedure
Click to expand...
 
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