The Firing Line Forums - View Single Post - What other calibers share/use the same basic cartridge case?

**Mike Irwin** · January 3, 2013, 12:50 PM

"We might as well claim that all cartridges based on a rimless bottleneck case with ~.474" rim diameter should be traced back to the 7x57 Mauser round as it's probably the first one of that ilk."

It was.

I did.

As has been noted here earlier, Winchester itself indicated that the .30-03 was the starting point for the .270 when it introduced the round in the mid 1920s, a fact (not a decades-later guess) mentioned in the gun publications of the day.

As I also noted earlier, Winchester's engineers and ballisticians had absolutely NO qualms about dipping into the "funky & unpopular" vault for inspiration for new rounds.

The .220 Swift was based on an abysmal flop of a cartridge called the .236 (6mm) Lee Navy, while the .348 Winchester took its case inspiration from the .50-110 Winchester.

January 3, 2013, 12:50 PM	#44
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,390	"We might as well claim that all cartridges based on a rimless bottleneck case with ~.474" rim diameter should be traced back to the 7x57 Mauser round as it's probably the first one of that ilk." It was. I did. As has been noted here earlier, Winchester itself indicated that the .30-03 was the starting point for the .270 when it introduced the round in the mid 1920s, a fact (not a decades-later guess) mentioned in the gun publications of the day. As I also noted earlier, Winchester's engineers and ballisticians had absolutely NO qualms about dipping into the "funky & unpopular" vault for inspiration for new rounds. The .220 Swift was based on an abysmal flop of a cartridge called the .236 (6mm) Lee Navy, while the .348 Winchester took its case inspiration from the .50-110 Winchester. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.