sure.
I also forgot to mention that there is some temperature variability in terms of regulation.
H4831 is in the "extreme powder" lineup and varies less than many powders out there but it still does vary some --- and this is more critical in regulating a double than you'd ever see in a single-barreled gun.
Denton helped me with some math during the initial work-up and we documented the following:
this will vary a little from lot to lot but in general:
+/- 1* F = +/- 1.4fps velocity
+/- 1gr H4831 = +/- 33.5 fps velocity
once I did all the math, I ended up with two loads to hit the target regulation velocity of 2030fps:
#1) 104 gr for average temps 45* - 100* F
#2) 106 gr for average temps below 40* F
I've got a spreadsheet with the formulas if you're interested
Last edited by UtahLefty; 03/30/10.
