Why are we always proposing new cartridges? Why not revive some of the old ones that would fill the bill nicely? For example, the 300 H&H Flanged Magnum was designed for doubles and will do anything the 30-06 will do plus a bit more. There was a 275 H&H Flanged Magnum (Both of these are necked down 375 mags) that was intended for long range shooting. I'm always hearing the doubles are no good for long range work, but there were a h**l of a lot of long range cartridges developed for a rifle that wouldn't work at long ranges.

The 30 Purdey is a near duplicate of the 30-40. The 300 H&H will do anything a 30-06 will do. There were several DR cartridges in the 275 caliber range.

Pressure is a non-issue. Back thrust and recoil are what count as far as stress on the action is concerned. The reason smokeless DR cartridges ran rather low pressure to begin with was due to extraction problems with the thin brass that was a legacy from the BP loads. How ever there was never any need for high pressures any way. Bolt action rifles run high pressure out of necessity since the action constrains the cartridge length. Where the bolt action is stronger is in extraction power.