In reply to:

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By Xnitro on another site.

I was wondering, with the taper in the barrels at the breech and the smaller area at the muzzle causing the barrels to cross-over, is this why so many of the old obsolete double rifles used straight walled cases? So the case would be thinner allowing the cross-over to be further out?

Also is this why the cases would often be rimmed? If they were rimless cases the cartridges would have to be fatter and create more taper? I guess these early gun makers knew what they were about as the rimless design meant the rim could be outside the case width and less taper.

But wouldn't some of these really thin newer ultra magnum rimless cartridges be perfect for a modern custom double? The cartridge is often thinner, less taper and faster velocity could get the cross-over further out?

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Would this be why my 9.3x74 R shoots farther than my .577NE, because the case is thinner?

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Lovu Zdar
Mick

A Man of Pleasure, Enterprise, Wit and Spirit Rare Books, Big Game Hunting, English Rifles, Fishing, Explosives, Chauvinism, Insensitivity, Public Drunkenness and Sloth, Champion of Lost and Unpopular Causes.

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