7mm STW on a standard long action.
Thinking about building one for some unknown reason.
Must be bored.
I realize the STW COL is 3.6".
What I understand all Savage long actions are the same. Same bolt I assume as the RUM length.
The bottom opening on mine is 3.59".
I read on this site in a previous post that you can use a modified centerfeed magazine and that will work.
What do you need to modify?
Also read that you need to modify the feed ramp which is not a big deal
The action is a staggerfeed control feed magnum action.
The stock will be a B+C duramaxx.
The ejection post is 3.8" long.