) The biggest hurdle is sourcingIIRC Savage was going to chamber a rifle in .425?
While it sounds interesting there is a problem. Brass is almost unavailable and what brass there is isn't very good. A few that have rifles in this calibre get around this problem by getting another bolt for the rifle with a boltface that will fit either the 404 or the Rum cases. 425 cases with the larger head are then formed from the 404 or the Rum brass. Bullets are not all that available either. If you want a powerfull rifle why not build a 416 Ruger (375 ruger necked up to 416) or a 416 Taylor (458 necked down to 416). Both would be comparable in power to the 425 but with easily available components.




























