I think you need to do a little reading before you start playing with things.....
Savage has three main bolt head sizes. Small .378" (223,204) Large .473" (308,30-06) and Magnum .532" (7mm,338wm)
I assume that since you have a short action, you are stepping up from the small to large bolt head. In that case, anything that has the large case head and will fit your action length, yes you can use.
It has been my experience in the past three rebarrel jobs, that you sometimes need more than just the bolt face it's self. You will need the "other" part of the locking lugs, that the bolt head rotates in. It has a longer "lug" to keep the bolt from traveling as far rearward, with really short cartridges. Then the mag houseing may need changed due to the partial "blank" they put in there for the afore mentioned cartridge lenght issue.
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