Re: 338 wim max effective range.
I have a 338 win mag light carry rifle with no brake. It is the largest 338 that can be shot effectively without a brake. If you don't use a brake then get the 338 winny. I shoot a 200 grain swift scirroco with .507 BC at near 3100 fps because of the recoil. My longest shot with the 338 winny was a 72" moose in Alaska at 1100 yards. That is extreme stretching it but with a spot shot and a good shooter it can happen. So that is what can be done with it. I think it is best with the 200 or 225 and is a great rifle.
Predictions are difficult, especially when they involve the future