With eather the 6.5-06 or the 6.5x47 ill be using a Shilen 26" savage heavy varmint contour 1:8 twist ratchet stainless barrel( Ive read 100-200fps gain over standard rifling with same charge pushing it, should extend barrel life if less fire makes same velocities?) Firing 120-140 grain vld bullets and on even my most trigger happy days it might see 20-30 rounds max a day with plenty of bolt open cooling after a 3 ta 5 shot group..most days it'll be picking off crows ground hogs or yotes(5-10 rounds a day average..) I drive a semi so I'm not home a lot to shoot anyway but now that I've got my wife shooting it'll be more often...I'm leanin toward the 06 now just cause I'm liking the longer range power....I'm developing cartridge a.d.d....