I'm working on my "FAMILY MARTINI": All mathmatically proportioned to the original .577-450 case ... pic l to r ... below (parent case)
.577-450 M-H original case
.400 K-M (.500 NE) .408" bullet
.375 K-M (.348 Win) .375" bullet
.358 K-M (.38/56 WCF) .358" bullet
.320 K-M (.444 Marlin) .321" bullet* same case
.310 K-M (.444 Marlin) .312" bullet* same case
.300 K-M (.303 Savage) .308" bullet
.280 K-M (.30/30 WCF) .284" bullet
.250 K-M (.357 Maximum) .257" bullet
.220 K-M (.218 Bee) .224" bullet
also.... second pic, shown next to a .577-450 case
.402 Enfield-Martini (500 NE) The Brits dropped it in favor of their new .303 round.
Dies on hand, brass all done (75 to 150 of each)
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Just waiting on the rifles.
The idle mind IS the Devil's workshop.