4.27 vs 4.4 spacing on SA action

I am in the hunt for an action but unsure what the differences are in the spacing. I realize the 4.27 is 4.27 inches screw to screw but which models had this spacing or is it an age issue, meaning the newer actions have the 4.4 etc.

I bought a stock on this site and want to match the action or possibly mod the stock. Thanks for the input.

4.27 is staggerfeed, which is older.

4.41" is centerfeed, which is the current production style (and hopefully Savage leaves it alone for a couple decades).

Either will work well.