I've got both a 416 Taylor and a 416 Ruger.
They both have the same make of barrel, the same specs, twist, length etc. The barrels are even consecutively serial numbered, one is stainless (Taylor) and the Ruger barrel is Chrome-moly. I can get near enough to 2400 in the Taylor using RE 15, but can't get anywhere near 2400 in the Ruger without flattening primers. Apparently the makers CM barrels are not lapped, whereas the stainless ones are, which would make me think that the stainless barrel is very slightly larger and smoother, allowing a greater velocity.
I built both to compare them against one another, have'nt had the Ruger long enough to form a solid opinion yet, but it will have to be good to beat a 416 Taylor in my humble opinion.

David.