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Peak Pressure??
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anthony
new member
posted
What would the Peak pressure of a .257 STW shooting 100 grain bullet be with a Pac Nor barrel. ANTHONY
 
Posts: 19 | Registered: 19 January 2004Reply With Quote
<eldeguello>
posted
Quote:

What would the Peak pressure of a .257 STW shooting 100 grain bullet be with a Pac Nor barrel. ANTHONY



Wouldn't this kinda depend on such variables as:
Powder amount;
Powder type;
Bullet type;
Primer type;
Cartridge case volume (case wall thickness);
Case brass hardness;
OAL of the cartridge;
Throat neck diameter;
Length of freebore in throat;
and a number of other things?

Your question is unanswerable!!
 
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Dutch
one of us
Picture of Dutch
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with a factory round, between 60,000 and 65,000 PSI. With a handload, who-the-H knows?

If you'd like to play with this, there is a free calculator floating around the internet called "winload". It is an adaptation of the old Powley calculator. It gives pressures in CUP (Copper Units of Pressure), which is loosely correlated with PSI. Fun to play with. HTH, Dutch.
 
Posts: 4564 | Location: Idaho Falls, ID, USA | Registered: 21 September 2000Reply With Quote
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