I recently completed a new build (I know--it's not a Savage rifle per sae--but it is still relevant here IMO) using a unique polygonal-rifled barrel by Black Hole Weaponry. Their barrels can be scary accurate and I thought folks here may want to consider this in their future builds (I have absolutely no connection with them other than being a satisfied customer).

What's this got to do with Savage rifles? I'll tell you. : )

They have in fact made limited runs of Savage barrels in the past--but this involved interruptions and retooling of their production machines, so they tended to be catch as catch can.

BHW has recently made a major investment in new barrel production machinery and facilities which should increase their capacity to produce unique barrels--they have always been open to custom-designed unique caliber barrels. I recently had a talk with them and was told that Savage barrels are in their future plans now that they can accommodate longer-barrel machining without re-tooling. Another very interesting future development is plans to machine brakes in-line during barrel production--in other words the muzzle device will be machined into the same piece of steel as the barrel.

Pictured below is an AR build I did using one of their 18" 264 lbc barrels with a 1:8 twist and matched bolt. Their "regular" profile is basically the equivalent of other guy's hbar type barrels. Because of tight funds I did not go with fluting--which they are specialists at--though it does add significantly to the weight and next time around I will opt for fluting.

Just food for thought (and an excuse to show off my latest build)... : )