benchman,
If your Savage is a 1-12 twist it will stabilize the 60 Partition just fine, as that bullet was designed at least partially for use in the .223 with the standard 1-12.
Savage does put 1-12 twist barrels on at least some .22-250's. As an example, my Axis .22-250 has a 1-12 twist, and shoots the 60 Partition well inside minute-of-deer.
