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The Lee 155 gr swc was never available except as a 6 cavity mold, they stopped making it and are all out of stock. The Lee, and several other 160 gr swc's are very blunt, and are not likely to feed well in most .45's. With the longer case of the .460 Rowland, they feed better, and with a very experienced smith, very determined to MAKE such ammo feed reliably, it can be done, but a longer nosed, more amenable feeding cast swc bullet would be far better for most .45. If a 170 gr bullet, with a better feed ogive was cast out of pure tin, it would weigh about 110 grs. Hollowbasing, deepening, maybe also widening the grease groove, hollowpointing it and slitting the nose might get it down to 80 grs, and in a 5" .45 ACP, fully supported barrel, it would be feasible to get it to at least 2100 fps, and maybe 2200 fps. The latter load would have 860 ft lbs.
 
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