Safari Club (SCI) has a handgun category for each animal species listed separately. You must be a member to get entered into the book, once you are in, you are in. The book includes all methods of take, and is not handgun specific. The SCI scoring method does not penalize the animal for certain disparities like the B&C and P&Y methods do, so the SCI score is generally several points higher.

A few years ago SCI was trying to get more handgun hunters to enter their animals taken and I was helping to promote it here on HHM by offering coupons toward the entry fees. This may be the thread you remember.

SCI's goal was to get enough entries to publish a handgun only records book, but in spite of everybody's efforts (including Mark Hampton entering over 100 animals) not enough entries were received and the effort was abandoned.

I believe JD Jones at one time was considering a handgun only record book but it has not evolved that I am aware of.