Looking to rebarrel with either a 6.5x55 or 7x57 barrel. I really like both of these calibers. What is the best twist rate? The 6.5x55 is offered in both 1/8 and 1/9, the 7x57 is only available in 1/9.5.

I currently have a 30-06 and o\although only used for hunting the recoil is more then I care for.

The rifle would be used for hogs/deer.

Thanks, Ken