Brittany Man asked about
pressure/time curves on anther thread
Pressure/time curve from Neil Winston
www.claytargettesting.com
If the peak pressure is at .7 msec, and the shot leaves the barrel (?30") at 3.5 msec, the peak pressure would be 5-6" from the breech.
Red Dot appears to peak about .3 msec
Which does not fit with this oft posted
pressure/distance curve showing peak pressure
within the chamber
Nor this from
Sporting Guns and Gunpowders: Comprising a Selection from Reports of Experiments, and Other Articles Published in the "Field" Newspaper, Relative to Firearms and Explosives, 1897
Sherman Bells pressure testing published in
The Double Gun Journal Summer 2002 "Finding Out for Myself, Part VI, Smokeless vs Black", p.19, and summarized in Volume 17: Issue 4, Winter 2006, p. 39
1 1/4 oz. 3 3/4 dram GOEX FFFg Black Powder at 1240 fps and equivalent load Blue Dot
..............1 inch........6 inches....12 inches
GOEX........5900 psi......4100........2100
Blue Dot.....6000..........4300........2300
