I was just looking at Woodleigh Bullets product list and they make a .412" cal 300gn RN SN specifically for the .405 Win. So there's another to try when you get there. In fact, the .405 looks like a good round for a large frame martini.......... :grin:
Mind you, I think I'd be buying the Hornady brass. Bertram makes great brass but at $80 for 20 cases OUCH!! :eek: