I'm getting good accuracy out of the CEB's using power pistol like you said.I got poor accuracy out of the barnes at 100yds using H110, enforcer and power pistol. accuracy was ok at 50 yds but that's not what I'm looking for.I'm using a labradar chrono and I have found in the handguns velocity drops a lot with the copper bullets at 100 yds as compared with the lead bullets.I don"t know if that has anything to do with the 100yd accuracy,just an observation.