It isn't about underhammers. It is about having a set of easy to interpret guidelines that don't take a lot of twists and turns to maintain a sane level playing field at the shoots. No one there is going to argue with you about it. This is allowed. That is not. That is why that date was used in the first place so that the guidelines would be before all of the crazy changes start. If they push the madness back before that date, then the quidelines have to be changed also. If you go to a 1790's woods walk with a half stock flinter, don't be upset when you are not allowed to participate with that gun. Same story. There is a group that is trying to push for everything that was ever made anywhere in any quantity before 1840 to be allowed at the shoots. They are grasping at straws and anything they can to justify the underhammer. One of the people that used to post here ripped me up one side and down the other about allowing period inlines to compete. He is still making rude remarks about anyone using a factory gun as of yesterday, and he is on the TMA board. The changes in muzzleloading in the last several years have almost destroyed the muzzleloader season here. I am very protective of the only place I know of where there is still sanity in full measure.