378Wby ... I'll own one eventually. Already have dies. Mine will be on a Ruger No1 with 28" barrel!!

GK,
Unfortunately ... all the guys I know shooting a 416Ruger currently are using opened 375Ruger brass. Got half shares in one of those reamers too! Mate and I brought it in early so he could rechamber his Howa 416Taylor. It's a very good cartridge ... but very similar to the 416Taylor in reality. Maybe 50-75fps difference. A fortnight ago I played with a Ruger Alaskan in 416Ruger and its a lovely package! I'd just replace the stock as I hate the Hogue's.

The 416Rigby I owned briefly in a CZ American. Brilliant rifle, weight was just right for that level of 'power' and recoil from the cartridge. The 375s are too heavy and the 458s (owned 2) are feeding troubles galore. I sold the 416Riby as powder disappears fast when your burning 100gr for 2400fps. Mate bought it, added another 15gr and now gets 400gr at 2700fps ... he's loving it!

I turned away from the 416s as the 458AccRel gives me a 400gr at 2580fps, plus a 500gr at 2350fps (I knock 50 fps off as there's no need to run them that fast) ... hence I feel no need to add a 416cal to my safe. But I have got a No1 in 450/400NE to stay 'in touch' with the 40cals.
Cheers...
Con