I doubt they all will as well--if I was a betting man I would say the .416 Remington might be one of the ones to go--just because the new Ruger will get all the press for the next year or two---plus the Rigby will be will us forever and justifiably so...

Ironically, during my last trip to Africa recently, I asked 6 different PH's what calibers they were using..1 was using a 458 Lott, 2 were using a .458 Win and 3 were using a Winchester chanbered in the .416 Remington...that quite frankly, really suprised me...Just thought everyone would be using a 458 or some sort...personally, I have used the .416 Remington on 4 hunts to Africa--and have perfect performance with one shot kills from steinbuck to elephant..very impressive caliber.IMHO...

Ripp