I'd play with the Berger Bullets Twist Rate Stability Calc; on line. It can really educate you on what is best for your shooting conditions. I live, shoot and hunt at 4800 ft elevation and higher. The bullet stability and BC will change as you go higher/lower in elev. I've got two Bobs, both 1:10 and even then I wish I had a 1:9" twist, especially with the new, longer bullets out, coming out or about to come out (hint!!!). Should hopefully be able to talk about it in a week or two.
