Hey Ranch13,
Please don't take offense to my reply, but I do have a dog in this fight and I have a hard time walking away from it... I'd like to address your post. Seriously, no offense
Looks to me like there's a handful of folks that have confused the replacement crap with the real black.
Even in the 1870's sharps, remington and winchester catalogs, they cautioned what a 1 gr difference in powder charge could make. Sharps recommended apothacary scales, and a table to convert apothacaries to grains.
Then you can get into the Ideal reloading instructions and how the powder measures were graduated to throw "x" amount of grains of black powder.
I hope you don’t think I am confused. I was just using the Bulk powders that were available at the beginning of the 20th century to support my claim that Black Powder was traditionally reloaded and even from the factories loaded by volume. They made bulk powders because that’s how people measured black powder. If they used weight they wouldn’t have needed the analog volumetric powders, they would have simply said load "XXX" grains of King's Semi-Smokeless, or Win. Lesmok, etc. These powders COULD NOT be loaded by the same weight the BP they were replacing had been. They were to be loaded by the same volume. I'll ask the same question I asked John Boy but in a slightly different way. If BP was loaded by weight, then why didn't they make a replacement powder that weighed the same for a given charge instead of having the same bulk?
They went to considerable trouble to make a powder that performed in a similar fashion, with similar pressures, etc. that literally had to be loaded by volume. Why would they do that if it was simply a matter of weight? It is much easier to develop a powder and add fillers to change the weight than to start with a fixed volume and then develop the pressures necessary. The first option is done today with lot powders.
Now I will admit w44wcf has been doing some research that is supporting weight as the basis for many factory loads. I respect his methodology and he may yet convince me that the factories loaded by weight (that is they set their measures by weight). And he has some evidence that not all factory BP loads were full to the top, there may have been some with space in the cases. That is a very different question and begs he question " why has it been handed down to us by our fathers that BP must be loaded with no space between powder and projectile?" But, that is a subject for another day.
Black powder charges have always been expressed in grains weight. The substitute crap has always been designated to be thrown in the same volume as a blackpowder measure set for "x" amount of grains weight.
If that is true, I can find no evidence of it. You have mentioned some catalogs, is there any way we can get copies of those? Seriously I would love to have that knd of information.
44wcf is correct that bp can be measured either way, but 9 times out of ten if you have a quality bp measure the grains weight setting will be very close for the intended size of bp.
Well then let’s use w44wcfs own measurements to determine if that is true. On October 31, 2005 he posted that he used a very nice Belding & Mull volume measure to dispense 40.0 grains by volume and then weighed different powders of the 2Fg type. This was the result:
So let’s say you were shooting some .45-70 loads, we’ll use 70 grains to make it nice and round. This would be the results that you said would “9 times out of 10” be the same.
I don’t know, but 11.11 grains difference between KIK 2Fg and Swiss 2Fg (both of which make great BPCRS powders) seems a bit extreme to me. That is a 17% difference in volume…Call me crazy, but that seems like lot.
Now before everybody starts spouting off about how swiss is heavier,,,, might want to compare powder sizes, 2f Swiss is more the kernel size of Goex 3f, and there in lies the dirty little secret some are oblivious too....
Now Ranch 13… I’m surprised you said that since you have been a pupil, studying at the feet of Dutch Bill and John Boy. No. 3 Swiss (FFg) has been measured by those two and I know you have read the results because you have been a party to the conversations. This is what Bill and John Boy have related as far as grain sizes of Swiss and Goex FFg.
Swiss No. 3 FFg (grain % retained by the named meshes):
20 Mesh (opening size 0.0331”) - 76.16% Retained
30 Mesh (opening size 0.0234”) - 23.50% Retained
Passing Through - 0.34%
Goex FFg (grain % retained by the named meshes):
20 Mesh (opening size 0.0331”) - 79.2% Retained
30 Mesh (opening size 0.0234”) - 20.8% Retained
Surprisingly similar… And surprisingly no fines reported by Dutch Bill.
Dutch bill also reported on Goex FFFg which you said Swiss No.3 (FFg) resembles in grain size.
Goex FFFg (grain % retained by the named meshes):
20 Mesh (opening size 0.0331”) - (Trace) Retained
30 Mesh (opening size 0.0234”) - 70.8% Retained
40 Mesh (opening size 0.0165”) - 26.2% Retained
Passing Through - 3.0%
According to Bill a common 3Fg powder like Goex is a much finer powder by the measured grain sizes than Swiss 2Fg. Maybe Bill’s wrong… hmmmmmmmmmm...
There is a unit of volume called a grain, it's not just a unit of mass. And, the volume standard is determined exactly the same way a grain of weight is determined. It is a volume of water. That volume of water weighs exactly one grain. One ounce of water by volume weighs exactly one ounce of weight as well. If you take 7,000 grains of water by weight they just so happen to be one pint, which just happens to weigh 16 ounces. There is actually no "just so happens" involved, it is by intent.
Regards,
Mako