rodwha said:Did 100 grns of BP ever weigh 100 grns of weight with any variation of granulation?
Nope. That's what I measured. The difference between what I have and The Curt Rich chart may be due to variations in volume measures. There is no government or scientific standard definition for a grain of volume. The populist 'definition' is 1 grain by weight of water at 59 degrees Fahrenheit (sic) displaces a volume defined to be 1 grain/volume. I have 4 volume measures, and they do not agree; the spread is 13% at the extremes. I attempted to use the 'definition' above to determine which one is 'right' and found the one closest to it throws 110 grains/weight of FFG Goex when set at 100 grains/volume. Curt Rich gives no source for his numbers; he just defines "100 gr. VOLUME of BP equals 'approximately' 100 gr. WEIGHT" (and then he displays 3 significant figures!). So, you pay your money and you take your choice."100 grains/volume Goex FFG = 110 grains/weight"
Typo I suppose?
Yes, the chart probably does display a typo for Pinnacle that mixed up the figures for Pinnacle FFG & FFFG.
alsaqr said:100 measured grains of Pinnacle 3F weighs 82.1 grains. 100 measured grains of 2F Pinnacle weighs 85.8 grains.
Just as a side note, while Pyrodex is cleaner than BP and 777 is cleaner than Pyrodex, IMR White Hots are cleaner than everything. I gave them a try and was amazed I could fire 7X rounds without cleaning the barrel. I didn't think that was possible...Just so you know I shoot both but usually more 777 because I think it cleans up better.