Hello everyone, Ive got a 7mm rem mag that i use for anything past 500 yards that i keep in the truck in case we see something from the truck out in the field. It is too heavy to pack, thats why i keep it in the truck. A 7mm rem mag is a good long range hunting round, i know. But i consider it the bare minimum (no pun intended) for that type of work. What is a caliber that i can switch to when i rebarrel that is in 30 caliber or 338 but has the same bolt face? It must be at the least, equal to a 300 win mag in energy. Would a 338 winchester magnum be any better than my 7 mag or a 300 mag? Any answer appreciated, thanks.