Carl,
Now it seems you have a bullet mold with your rifle. Do you have loading dies also? It is a lot easier for us to help if we have all the information. My cousin has a Martini type Rook rifle on 380 Rook. We tried the HBWC trick, but it didn't work at all, it seems smokeless powder doesn't obturate the skirts very well. However, I had a bullet mold for a 36-caliber percussion revolver(.375"+diameter) conical bullet. This bullet has a very short "heel" section and no lubrication grooves, but by lubricating the bullets with ALOX and handling the loaded cartridges carefully the accuracy was very acceptable. A proper heeled bullet mold would allow normal handling of the cartridges.
Mike
Last edited by Der Ami; 02/17/24 01:52 PM.