We really like long range prairie dog shooting. First 22-04 was a 12 twist that was loaded with 40 gr plastic tipped bullets. It ran out of gas around 500 yards. Next one in 8 twist, 75 gr Amax bullet at 3140 really shined in the 6 -900 yd range. This winter I set it back and ran the 222 reamer in to take 204 length brass with the 222 neck. Time will tell if the long neck is worth it or not. The 22-04 with many rounds showed no alligatoring or burning in the throat. That said an Ackley 223 would be a lot simpler but who likes easy. An eight twist 22 BR is almost not fair for long range PDing. Dale