Quote Originally Posted by macds
OK, that being said, how much different is the overall length?
Is it a matter of the action not being able to handle it, or the mag (if you start with a centre feed)?
Silly question, but how do i know if its center feed before ordering.
If its the action, could it be inletted to allow the bottom feed?
If its the mag, extension should be fairly straight forward with the right tools...I think :)

Stu
Standard mag box is about 3.5", RUM STW is 3.6"
A stagger feed action will match those lengths. A center feed action is about 3.8" iirc. Center feed magazine allows just over 3.5".
New models are center feed, the magazine is attached to the stock not the action.
Bottom metal? Do you want DBM? That's a whole other story. There isn't a Savage DBM that allows 3.785"

If you start with a center feed action, the action will not have to be modified, just the mag box. You'll have to open the end of the box to allow the longer COAL. You'll need to fix the mag box into the mag well of the stock somehow.