My experience in loading BP loads is minimal at best. I plan on loading 45-70 with BP for my Trapdoor. Now I’ve loaded a lot of 45-70 for my Marlin Guide Gun, but that was all with smokeless. The only BP Cartridge loads that I’ve loaded has been for my Winchester 1873 lever and that has been very little. So, now to my question. I had someone suggest to load a reduced 45-70 load with BP of 60 grains by volume of FFg, place a lubed wad on top of the powder and then to fill the space above the wad with cornmeal so the bullet will compress the cornmeal and powder so as not to have a air space. So is this a sound load? I have the Lyman BP loading manual, and it gives a load for 45-70 of 60 grains of FFg, but never mentions a filler above the wad. Just wanting to get some thoughts on this. This person I know has loaded a lot with BP, but sometimes I’d rather get a second opinion too. I’m fixing to order the SPG Black Powder Cartridge Reloading Primer book as well, as I’ve heard it’s a very good book for loading.
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