Originally Posted by Lefty7mmstw
I don't think the 300 rum will kill a barrel very fast unless abused. I've already got more rounds on my 300 rum than got the barrel tired on my 7 rum and it'd still a 1/2 moa rifle with little barrel wear. The 338 rum is going to be easier on barrels, but the recoil is also up from the 30 rum a good bit.
As far as the 7stw, well my friends I'll keep shooting one until I can't make brass; it is a heck of a round.
I have 2 300wm's, one .264wm (going to build another) 0ne 300Rum, and currently two 7mm STW's.
I thought long and hard about adding a 7mm Rum, but with the above rifles all will last far longer, are much more of a pleasure to shoot with lower recoil and blast and there's simply nothing you can do with the 7mm Rum you cannot do with the rest of the above, do it cheaper, and do it longer.
If I had to settle for just one big magnum it would be hard to choose between the 7mm STW and the 300wm and the bottom line is the STW does it faster and flatter than even the 300wm.
Out to a 1,000 yds there's simply no need for anything bigger than either the 7mm STW or 300 Rum but the 300wm will always be around and easy to find reloading components for it will be as well.
In the 7's though overall you cannot beat the 7mm STW.