I don't own either but a good friend of mine owns both of them and have seem them at play. Hammerhead works fine but when he used the Palmerbrass(unported), the accuracy was pretty amazing. At this time he has a Apex on the tip(which takes that accuracy down) but it still performs like a gem. Most of the other members would vouch for the Palmerbrass(does cost a pretty penny also) but I couldn't give you a honest opinion on either. I've got a Lapco Snapshot which I'm happy with and a Apex Barrel stock. My poor flatty is collecting dust.

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"Me? Play point? Are you insane?"

12" Palmers Pursuit Barrel w/Apex and HPA Lungs