I have just changed my encore '06 pistol to a .270 rifle. I bought a factory .270 rifle barrel that is 24" long and has sights on it. I do not handload. I have a sightron mil-dot 3 x 9 scope on it and absolutely love the scope. So far, I have only shot 15 rounds of Federal premium 130 grain Barnes X and 55 of the same brand only in a 150 grain Sierra game king bullet. I am happy with my purchase, because I have already seen several groups around 1"@100 yards, but the barrel seems almost sporadic in it's bursts of these groups. The barnes seemed to have about the same precision as the Sierra bullets. My question is, of you guys and gals that shoot the .270 factory barrels, have you obtained similar results or found a round that works better than the others? Any of you shooters keep your barrels dirty and find better results in regards to precision?