I've been doing a lot of reading about this, and the variety of 6mm and 6.5mm calibers is overwhelming. I'm looking at building a gun for shooting at the range out to 1,000 yards, a longer range varmint rig, and possibly coyotes and pigs at long range as well. I currently have a .30-06 and .223 as well. I'm primarily interested in long barrel life and low recoil, and have no interest in competing, so the last bit of accuracy or wind bucking really doesn't matter to me. The gun won't be carried often so it can weigh 12-15 lbs to tame the recoil down to almost nothing. When I take my .223 bolt gun out, I typically shoot around 100 rounds, so I want something that won't beat me up or have me replacing the barrel 2 or 3 times a year. Magazine feeding would be a bonus but not necessary as I typically load through the chamber anyway. Bullet availability seems good for both the 6 and 6.5, but there seem to be few varmint bullets for the 6.5 available, and they are more expensive. Right now it seems to be a choice between the 6mm BR and 6.5x47 as they seem to have the best barrel life, hopefully around 3,000 rounds of useable accuracy, and I don't need the extra pop from the Dasher, XC, .260, or Creedmor from what I can tell. If the BR would be the better all around choice with the exception of coyotes and pigs, that's what I will go with, but I wanted to see about the other advantages of the 6.5x47. Lobbing bullets out if my .223 at 750 and 1000 yards, I noticed that it was hard to tell where the impacts were due to the small slow bullet at that distance, and even hits on steel at 500 yards barely moved it. I don't know if the 6mm BR will have this same issue or if there is enough energy to overcome it. Thanks guys.