Originally Posted By: Drew Hause
Here is the load recipe from the Hodgdon site, which the shooter has been using for about 2 years
http://www.hodgdon.com/basic-manual-inquiry.html

Remington Gun Club hulls
1 oz. shot
Win 209 primers
WAA12SL replacement wads
17.5-gr Clays powder using #32 bushing in MEC 9000G

The recipe has 15.7-gr 7100-LUP, 1125 fps; 17.0-gr 8200-LUP, 1180 fps; 18.4-gr 9500-LUP 1235 fps

I'm surprised Hodgdon still reports LUP rather than piezo-electric transducer pressures, which are likely higher.


An unfired/loaded shell measures 2 5/16”
A fired shell 2 11/16”


I get that recipe, if we use the "ballpark" formula of LUP + 1,000 = psi, as being pretty close to the modern CIP standard service pressure (NOT proof pressure) maximum of 10,730 psi. Higher pressure than I'd want to go in a vintage gun. I've seen the same blown steel barrel as Mark II, and would definitely wonder about a possible double charge.