Can't remember where I saw it from but one of the contributor mentioned pre-fit from Benchmark, unless I read it wrong. However, I don't see any info on their website about it.
I do shoot a Benchmark on my .223 Mid-Range FTR rifle. Just started shooting it this year. At 300 yards I have shot HM scores and at 600 just under by 1-2 points. I'm still learning the rifle and cartridge for that distance. This barrel was chambered by Benchmark and throated for 80 gr. bullets. They are verygood shooting barrels and they do good work. I would own another.
We have pre-fit savage barrels. Most are custom order, but not always. Right now I have a 300 rum in stock and a 300-338 lapua in stock. Both small shank.
Chris
Benchmark Barrels