Davemuzz and Sportsman,
I've been a fan of Barnes bullets for quite a while having used them in bigger bores to take brown bear and mountain goat. Accuracy with my .338 mag using the Barnes was excellent. Only recently got my Encore in .243 and now am starting to reload using both triple shock and varmint grenades. A friend of mine has used them on coyotes (varmint grenades) explosive...dumping all their energy after impact. (I don't know about them out to 300-500 yards that's a far piece...my scope on my Encore does have a nice hunter reticle (sp?) that should help with farther distances and is a variable up to I believe 14X, but that still is a long ways...5 football fields!!?) I have been impressed with the results. He has not experienced any problems with accuracy that I am aware of. Barnes has come a long way...so many bullets and not enough time! But now that winter is closing in I am starting to find some more time to make ammo. Regarding .243 vs 6BR...I got the .243 just because if I ever ran out of my own homemade I could buy some premium, over the counter ammo that could do the job...there is some great ammo out there. Otherwise you are probably right about the 6BR outperforming the .243. Hope this rambling helps you choose and enjoy! Shoot straight - Fearless