I have an accurized Remington 30-06 with a bedded, floated barrel that has served me well but I'm thinking about re-barrelling to something that would be good for long range varmints and paper punching---perhaps a 6 BR with a fast twist but that would probably be better on a short action---maybe a 6.6x54 but that is also probably better on a short action---perhaps a 6.5x284 but I already have one. Anyway, what do you shooters suggest?