So, where did you end up?
243 or 25-06?
257 Roberts.
Cub:
I ended up on both sides of the 257 Roberts...
6mm Rem on a long action with a fast twist...
6.5 x 57 on a long action.. ( a Roberts necked up to 6.5 mm, or a 6mm Rem necked up) but with similar bullet weights it will out do a 25/06 any day of the week, and use less powder to do so, just the same as the 6mm Rem will do with the 240 Weatherby.. but the long action makes all the difference...