Was browsing GunsAmerica and found this:

400/360

Haven't been able to find much info about the cartridge and figured you guys would know......

I have no intentions of buying the rifle, just want more info about the rifle and the cartridge.

Thanks

A couple of the DRSS guys have 400/360's. There are 2 different 400/360's.
It is a great calibre for deer, wild pig, black bear over bait etc.

It is one of the best calibres under .400 bore for "lesser big game".

I will leave the technical stuff for 400 Nitro, he has one.

And he shoots it well I might add.

There were five .400/.360 2 3/4" Nitro Expresses: Evans, Fraser, Westley Richards, Westley Richards Rimless, and Purdey. None are interchangable. The Westley Richards (Flanged) and the Purdey remain relatively common and the others are extremely rare.

The Westley Richards used 41 grains Cordite and a .360" 314 grain bullet for 1900 fps from a 28" barrel. The Purdey used 40 grains Cordite and a .367" 300 grain bullet for 1950 fps from a 28" barrel. The cases are the same, except the Westley used an .060" rim and the Purdey an .050" rim. By comparison the .400/.350 Rigby used an identical case, 43 grains Cordite and a .358" 310 grain bullet at 2000 fps from a 28" barrel. Ballistically, there isn't a dime's worth of difference between the three.

The Purdey is one of the easiest of the flanged British DR rounds to load for. Cases are a snap to form from 9.3X74R (the exact same case except for length) and an excellent range of 9.3 bullets are available. The Westley is a pain in the ass. Bertram brass is available for both but is extremely difficult to make work. 9.3 brass can be made to work for the Westley, but the dies must be set up to headspace the case on the shoulder rather than the rim. Also, .360 bullets are strictly custom, or must be bumped up from 35 caliber. However, you must slug the bores. A friend had a .400/.360 Westley Richards shipped in on approval a couple weeks ago. The bores slugged .368-.369", rather than the standard .360"!
------------------------------------------------
"Serious rifles have two barrels, everything else just burns gunpowder."