I have a Mod 7 in .222 that I drove over to Hart, and had them put a heavier barrel on.
The original tapered to around 3/8 at the muzzle (it was shot out from prairie dogs) and I had them use the same factory taper, but stop at 5/8, and carry that out to the muzzle. I also went from an 18 to a 20" barrel. It is shooting super, and they even did a perfect job of routing out the wood stock to fit the bigger taper.
They can usually tell you what twist to use with the bullet you plan on shooting. I would go with their recommendation.
When I was at their place, they were in the process of replacing brand new unshot Anshutz Barrels on the USA's Olympic teams new guns, with Hart Barrels. Kind of tells you how good the Olympic team feels about their barrels !!
Later this month I'll be back in South Dakota to "Break In" this one....
Last edited by Bill Gunn; 06-07-2008 at 06:49 AM.