Originally Posted by dmax1800
I have the opportunity to have my Remington 700 22-250 accurized or convert it to either a 6mmBR or 6.5x47 Lupua for about the same cost (~$1100). The conversions would have a match grade barrel, timney trigger, Boyds stock bedded, action blue printed and a muzzle brake installed. The gun would be used for coyote and praraire dog hunting as well as target shooting. I've been told by the gunsmith that the 22-250 is good out to 400 yards, the 6mmBR is good to 650 yards and the 6.5x47 is good to 1000 yards.
Which do you think I should go for???
I definitely have a soft spot for the 22-250, but only if you go with a faster twist than the standard 1/14. A 12 twist is a good start, but an 8 or 9 twist will allow you to use heavy bullets that will stretch the range somewhat. If you are going with a new barrel, you might as well go with a fast twist 22-250 AI. I would expect it to perform pretty similarly to a 6mmBR, though the BR would likely have better barrel life.
I don't have any personal experience with the 6mmBR. I do know that it has an excellent reputation for accuracy and long barrel life.
I also really like the 6.5's, although I started with the 6.5x55 and went up from there in case size. The 6.5x47 is going to behave more like a deer cartridge and less like a varmint cartridge in comparison to the others. If you want more reach than the other two, the 6.5x47 would probably make you pretty happy.
All three are good cartridges. I don't believe there is a bad choice among them. It really depends upon which set of characteristics interest you the most.
AccurateShooter.com 6mmBR.com -- Best Guide to Precision Shooting and Precision Rifle Accuracy
have cartridge guides for all three cartridges that may be helpful to you in making your decision.