If you found a large .45 caliber conical that interested you, simply have them casted in .451-.452 and shoot them out of a sabot. I see no reason why it would not work. If this is your intent I would tell Dan not to lube them. Then you can pick the sabot of your choice and shoot away. I do shoot a 423 grain .458 but not from Dan. I cast them myself. They shoot real well.