Think about this the 6.5 rsaum or gap 4s, is one of the other caliber's that is booming. I built mine, and i love the gun for hunting, takes two minutes to change it over to a 308, 6.5 creedmoor, 6gt. using my wto lug.
Buy a custom ground nut from Northland shooting supply, Mcgowen, or a well known company. they run around 35-45 dollars. the Origin is a small shank savage thread pitch, not the same as a remington 700. remington has a 16 tpi, while the origin is 20 tpi.
I have a Carbon Six barrel that is just collecting dust. the barrel was shot 35 rds. of Hornady black 140 ammo. It produced several 1/2 " groups, but i do not use it. I got hooked on my 6.5 saum.
Price 650.00 shipped inside USA. Pay Pal f&f
barrel is threaded for small shank savage...