This was intended for commercial loaders to be able to load one bullet that will work in pre-war Colts that need .454" diameter, as well as modern guns.  The hollow base will swell under low pressures and accommodate large bores. It will also works for 45 acp and looks awesome. (I thought about calling it sexy, but non-hard-core reloaders think that's weird)

45 cal. RN  HP HB   230 gr.  .452"

.45 Colt  

.45 acp

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