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General >> Ammunition, reloading, shooting, etc >> Pressure - Reloading Manuals
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Message started by Olpeddler on Dec 21st, 2019 at 1:12pm

Title: Re: Pressure - Reloading Manuals
Post by KWK on Dec 31st, 2019 at 8:17pm
Lyman has the only modern pressure tested data I can find, for 3 jacketed bullet weights, 150, 180, and 220. That 220 bullet is out of production, but I don't know about the other 2 weights they tested (I haven't tried those weights). I have the 48th edition (2002), but the last time I looked at a Lyman in the stores it had the same data. Their cast bullet data has no pressure numbers.

Somewhat older data (1960s I'd guess, from DuPont) is available for IMR powders and two jacketed bullet weights. See the Hodgdon site; they still publish this data.

Lastly, the old NRA book Handloading (1981) has some pressure data from various sources.

Both the Lyman and the DuPont data are to the CUP standard for psi estimation. The NRA data is CUP, at least in part.

Sharpe's old book (1930s) has pressure numbers and some other equally old load books have such data, too. This is mostly for powders now long out of production, of course. These numbers are also crusher but predate the CUP standard, I believe.

There is no SAAMI standard for piezo psi sensors, so the only pressure data for it would be from handloaders using a PressureTrace or other strain gauge system.

Karl

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