Sell the 7mm remington and buy two rifles. A 280 AI or 7mm wsm
to replace your 7mm remington if you want a 7mm. They are better, more efficient cartridges that do basically the same thing performance wise. Then buy either a 300 RUM or a 338 RUM. Now you are equipted for anything that chalenges you. The 7mm remington is a cartridge out there in no mans land. The 280 AI and 7mm wsm do basically the same thing with less boom and recoil. If a guy wants a magnum 7mm they make a 7mm STW that will outperform the three previous mentioned. So it just leaves the 7mm remington in a bad place logically speaking. I own two and they get no use. If I want a cartridge in that class I always pick up my 280 AI. If I want a magnum I always pick up one of my 7mm STW's. If I want a big gun to kill big stuff way out there I pick up my 300 RUM or a big 338. So from a guy that has all of them that is my advice.
Not that the 7mm rem mag is a bad cartridge because it performs very well. It is just an inbetweener that doesn't have enough seperation from the 280 AI and wsm to make it worthwhile and is not a magnum like the STW which has quite a bit of seperation between the 280, wsm and rem mag.
The 7mm wby is a great cartridge in a Mk 5 rifle. It is faster than the rem mag but not equal to the RUM. The popularity of the wby's falters severely because of the price of brass however now remington and others make it cheaply. They may catch on again now but there are just so many new choices with beltless designs the wby's may have lost out to cheaper more popular choices. I have shot the 7mm wby quite a bit and have owned at least two since the 70's taking numerous animals with the cartridge. It is a very accurate cartridge.