I have searched for the following but I have been unable to find an answer to the question so I have decided to ask the question. Why not build a rifled 410/45 colt rifle barrel (24-26 inches) and fire 40 or 38 caliber bullets using muzzle loading MMP sabots for 45 caliber? I understand that the load would not be as fast as a 45 colt. However, with the higher pressure allowed for a 2.5 to 3 inch 410 barrel (12,500-13,500), compared to a 12 gauge (11,500), I would think that higher muzzle velocities could be achieved. You could place the bullet in the MMP sabot right over the powder without a shot cup. I think that 2.5 inch chamber would be sufficient. The loads would have to be pressure tested prior to firing as this is completely unknown territory. You should have some idea of powder charge ranges from current 410 shotgun reloading manuals. I currently have a 45 caliber muzzle loader and know that 180 to 200 grain 40 caliber sabotted bullets will shoot accurately and are sufficient for deer hunting. I realize that with 100 grains of 777 that the muzzle loader velocities, and chamber pressures, are higher. I have an Encore system so I would be having only the barrel built. So where is the flaw or somebody would be building and selling these for shotgun/muzzle loading hunt areas.
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