i also have much interest in some info on this topic. i have a encore with .280rem for long range and a .444 marlin barrel for brush gun mode. i'm thinking about building a predator gun once the tax return comes back. i'm planning on either .223 or .22-250 26" heavy barrel. i will be shooting at ranges between 100-500 yards. i'm leaning towards the 22-250, but it would be nice to have it be able to have ammo that will interchange with my AR. i'm planning on topping it off with a nikon monarch 6.5-20X, leupold is a little out of my price range, even though i love leupold and own many of them. i just don't know if i'm going to get a factory t/c barrel, or a custom match grade from bullberry/match grade machine/yadda yadda yadda. i haven't seen much feedback for the differences between the accuracy of the two.