Re: Re-barrel 7STW to 7mag?
I cannot find fault with your plan. I have a 7 STW and am currently building a 7 Rem Mag. I understand your idea.
I agree with you and the limited mag length. You could talk to Wyatts and get a longer magazine to help with the STW situation or go with the 7 Rem Mag. There are advantages to both directions. More power, more recoil but shorter barrel life with the STW and of course the opposite with all issues with the 7 Rem Mag.
If you make a 7 Rem Mag you might consider getting a faster twist to stabilize a 180 Berger VLD and take advantage of its higher BC. My 7 Rem Mag build is going to use a 30" barrel. I put it on an action that was a 375 H and H. I will have tons of seating depth leeway. So much, in fact, I decided to have Dave Kiff make me a reamer to my specs. I supplied a 180 VLD seated out to what I thought was right for my rig. You could add to the appeal of you semi custom by doing something similar. The reamer was approx $140 IIRC.
Should be a fun project.