have a 270-300 win mag that was built 15 years ago.it has a 10 twist broughton barrel 3 contour.the only bullets I shoot out of it are 130 gr barnes and 140 noslers.i got lucky with this barrel.i believe it is that one time hummer as it is beyond belief accuracy wise.when it starts opening up I will be doing a 1-9 or 1-8 for todays excellent longer bullets.hopefully with a mullerworks if he makes that twist.good hunting
