Have shot 6-284 a lot. Probably does not outperform a 243 ai by much although with a lot more recoil noise and powder. Action length might depend on bullet and seating depth. Brass must be formed in a two step process from 284 winchester or one step with 6.5x284.

"We are building a dictatorship of relativism which recoqnizes nothing as definitive and whose ultimate goal consists solely of ones own self ego and desires."Cardinal Rathzinger