I had Chris Matthews of LongShot rifles Long Range Hunting Rifles from Long Shot Rifles Custom Built Rifles
build my tactical rifle back in December. It has a 26" SS Krieger, 1:8.5 barrel on it. It's an absolutely tack driver. My load of 40.3 gr H4350, 130 VLD's and CCI 450's never goes more than .6 MOA; more like .3 to .4 MOA.
I decided to have Chris build me another 6.5x47 but a light weight hunting version and he suggested a Broughton 5C 1:8 twist in #3. I ordered a 3.1 which is nothing more than a 26" finished length. So I called Tim North @ Broughton and he is taking care of me. I thought I'd have to go with a #4 because of the desired 26" finished length until Tim suggested the #3.1 which is not listed on their web site.
Good luck with your build and let us know what you come up. Better yet, post pics when you get it.