RinB- JD Jones from SSK industries has made a .416/06 JDJ. Page 267 of my "Cartridges of the World", 60* shoulder, about a half caliber length neck. Probably cylindrical to the tiny but sharp shoulder. Made for the Encore/Contender break open pistols. 400gr projectile @ 2000fps, 300gr @ 2200fps. So, it's doable, but not practical. Making the brass looks tricky. If I had a 400 Whelen/Petrov, I'd just be happy using the 300gr TSX for hunting & .41 pistol bullets for plinking, as it has a very good track record once you make up your brass correctly and primarily neck size and have a Petrov-spec'd full length or shoulder bump die. But a new 416 Ruger barrel for my Savage 110 375 Ruger sounds like a much easier way to go, which I'll probably do down the road (and a 300PRC barrel, too, just to round out the family). CRS & mainer in AK got it right, too. Factory brass & ammo are the way to go w/ the current options. IMHO. Mark&Belle
