I have factory 6.8 and 7TCU barrels, ballistically the same cartridge. I bought the 23" 6.8 barrel as I had given my son a Rem 700 in 6.8 and we have had good luck with it. It seems a very well balanced little cartridge and I especially like the ability to buy quality, almost match grade brass from Silver State for standard quality prices. We match prepped the first 100 pcs. and I believe 90couple were within .6gr with the ones remaining also very consistant but several gr. lighter, as if from a different lot. The primer pockets and OAL were very consistant, the flash holes had only very slight burrs inside. It's good stuff. Personally, for the Contender, I MUCH prefer the 23" babybull barrel over anything shorter and the velocity advantage sure can't hurt if you are looking for full-power loads for hunting. A little more muzzle weight or length would be even better, IMHO. Mine has tupperware stocks, maybe 16oz. for scope, bases,rings and probably still would be hard pressed to make 7lbs. I figure if I can't make good hits, it doesn't much matter what the potential of the projectile is. In the Remington 6.8, we have shot the VMax and a few various 90-110 gr. bullets left from experimenting with my son's .270. H322 powder seems to shine in the 6.8 and I can't recall any of the loads going over 1MOA. There were a number with Match bullets, Sierra I think, that were in the .4-.5's. The VMax shoots well too and you can get it in a factory load I believe. My son figures it to be perfect on coyotes. No time yet to work up cast loads though I have bullets cast and ready to go. My 7TCU barrel is a 21" tapered barrel - too light IMO but never any complaints with accuracy or nasty TC throats. It has been a joy with cast bullets, don't think I ever shot any jacketed out of it. I think there might be a little better selection of jacketed hunting bullets in the lighter weights for 7MM over 6.8 but as long as you have 1 or 2 selections that shoot well in your barrel, it doesn't really matter.