Smokepole, Think you meant to say 6.5x55, it has a longer track record
MJ, a 243 thru vitals with a decent bullet is enough, proven. On large game I'd trust a tad more bullet to reach and punch those vitals from all average shot presentations, but would not hesitate any broadside elk to 300 yds with a good 243 load.
The 260 was a solution to a problem the didn't exist.
If that's true, then it's also true about everything since the '06.
