Anyone have any experiance caliber? Dave Tubb designed and sells it and Norma makes its brass. Sounds like a great 600 and 1,000 yard round. I heard it similar to a 243 with less barrel wear. Your thoughts on this comparison? How do they do for 100 yard paper shooting?

I built one several yrs ago....used a Savage small shank s/shot as my platform...Pac Nor supplied my 8 twist/3 groove heavy tube...27" long...throated it for 80 gr NBTs..but also use 90 NBTs & Sierra 107 SMKs...I believe it wears an Elite 4200 6-24 Tact for glass..loads run from 37-42 grs of powder depending on bullet...H4350...H4895...RE17 are three of my powder choices..I built is for LR p/dogs...recoil is mild with super performance out to confirmed p/dog kills beyond 1K yds..brass & dies are easy now...Norma has XC brass..Lapua makes 22-250 which is easly formed to the XC chamber..then fireform..I use a Redding FL & bushing neck die along with a Forser BR seater...great performing low diet rd...

Lots of information here.

http://www.accurateshooter.com/cartridge-guides/6xc/

I've used one for NRA High Power for about four years at 200, 300, and 600 yards. It is extremely accurate in my Tubb 2000 rifle.

Barrel life is not as good as a .223 or .308 in general. Velocity is lower than a .243. Most of the dope on it talks about how to get high velocity with 107 or 115 grain bullets. For 200 yards I use a reasonably light load of H4350 with 70 grain SMKs which is said to develop only about 40,000 psi. I have also used 85 grain varmint bullets and they are as accurate as SMKs. For 600 yards I use 107 grain SMKs and also use H4350.

I have used Norma cases and fire-formed 22-250 cases. With my light loads, I have one box of 44 (20 offhand, 20 sitting rapid, and two sighters for each stage) 22-250 cases which has been loaded 25 times so far with no apparent problems.

That said, for 200 or 300 yards, I don't think it has any advantage over a .223.