I have an Encore with an MGM barrel in 17 Mach IV (equivalent of the Fireball). Fouling is minimal, 50+ round range trips showed no drop-off in accuracy. In fact, it begins to shoot better after a half dozen or so down the barrel. What fouling I do get is powder or carbon and little to no copper fouling. I use 20gr V-Maxes or Berger 20 gr bullets and it seems to like Benchmark, H-322 and Reloder 7. Half-inch five shot groups at 100 yards are common. I don't do much fur hunting and haven't had a chance to use it in the field yet. A friend who used to shot the same caliber shot a couple raccoons with his and got no exit with the V-Max.

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Last edited by JSH; 01/22/11. Reason: wrong powder