A friend of mine built a 6.5-47 lapua with Krieger barrel and with the 140 gr. VLD's has shot a couple 1/2 inch and 5/8 inch groups at 500 yds. his gun consistantly shoots 1 1/4 inch groups at 500 yds. I was so impressed that I bought a Krieger barrel in heavy varmint 31 inch 1 in 8 twist for my 6.5 WSM build. I found out it is easier to neck down 270 WSM cases than 300 WSM
cases. I also neck turned the brass just to clean it up. I just got my reamer from Dave at PTG and hopefully in the next 2 weeks get it put together.
You need a 1 in 8 twist to stabilize the 140's. I just bought Winchester brass to use for my rifle.
I also found loading info on Accurate shooter and Predator Masters websites.
Brunos Shooters supply always has Kreiger barrels in stock.