Re: 7 STW or RUM?
I can shoot a 26" barrel STW without a brake but can not shoot the ultramag without a brake effectively. I have two 7 ultras with 31 inch target barrels for shooting the heaviest available bullets and five 7mm stw's. The 7mm ultramag is a barrel killer. I agree with Michael. I would do the 7 stw if I were doing one 7mm. They are great accurate rifles capable of extreme range without a muzzle brake and easier on barrels. For a specialty rifle like my 7mm ultras they are very fun to shoot on a limited basis with the heaviest bullets at long range. You just got to get it zeroed and limit your shooting.
Predictions are difficult, especially when they involve the future