In reply to:

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The high pressures are simply hard on the actions of double rifles, and their longivity is shortened by it to a great degree!

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Totally agree! And as is usual, the British had the answer way back in 1905 for controlling pressures in medium bore doubles, and that was the .360 No.2 Nitro Express.

Pushing a 320 grain bullet at 2,200 fps for a pressure generated with 55 gr Cordite of a mere 14.5 tpsi!

Modern powders would facilitate even lower pressures and/or higher MV's.

Sure, it's a reloading proposition today, but for all practical purposes, so is the .375 Flanged Magnum. Having owned a Royal Grade Holland that shot off the face in that chambering (and I've yet to see one that hadn't!), once bitten, twice shy!

So - my vote goes to the .360 No.2 NE as the ideal all-round double rifle calibre!

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