zimmer- I'm on the edge of getting started if I can get this barrel clear of fouling and minor rust (lots to learn). What do you mean by "fake powder"?With what powder????? Black powder has a certain density which tends to be fairly uniform from maker to maker and grade to grade. So you measure by volume the equivalent of 60 grains of black powder. You actually get about 60 grains by weight of black powder. Fake black powders are made to be measured by the same volume equivalent as black powder, but some are substantially less in density. So a 60 grain black powder volume of Pyrodex might only actually weigh 35 grains. What ever black powder or black substitute you use (except for pellets) use the black powder volume measure, even if the fake powder weighs less. A few of the fake powders are significantly more powerful than black powder and sometimes folks use 15% less VOLUME of Pyrodex to equal the same oomph as black powder.
How close you measure is to actual weight of real black powder can also vary a lot from one pour of powder to the next. Always tap the side of the measure and get the powder to settle to get the most consistent measuring from shot to shot.
I measured 80 grains by volume of American Pioneer powder and it blew the bolt back on my Knight rifle to the cocked position. It's a plunger type bolt. I went home a weighted the 80 grains by volume on my powder scale it it was showing 62 grains weight. I called Knight and asked what was the recommended load for this rifle. They said 110 grains weight. NO WAY am I going to try that one. Guy said the rifle was designed for triple 7 powder. Does Triple 7 not burn as hot? I guess I better try some different powders.
The main thing about measuring by volume is to be consistent. .
nope bh 209 is by weight or volume :: my load for on of omega is 81 grains by weight or 110 by volume. I measure all my charges by weight then verified by volume. Then again I gave up on all the other subs and just use bh 209 in my inlines or smokeless in my my sml.