I have owned a couple of .425 WR's, one a plain affair, and the other with an extended 5-shot magazine, side panel on the stock, drip points, etc. Both gave no problems with feeding. Both were made up on standard length '98 Mauser actions. Even the bolt head requires no modification. But, if buiding one up, the tricky bit would be duplicating the retaining system Westley Richards developed for reliable feeding.

If that can be resolved, IMO, the concept is ideal, particulatly for the romantic that want's buid up a medium-bore rifle on a genuine Mauser action.

An often overlooked advantage of the rebated rim is that they can be clip fed, using standard Mauser clips. Handy if you want to say, change from Solids to Softs in a hurry.

Ballistically, it is on par with .416 Rigby! Go for it!