The CMP (Civilian Marksmanship Program) has considerably widened the field to welcome new shooters to the tradition Bullseye arena.
Traditionally restricting allowable handguns to dedicated Target Pistol and Revolver designs, the CMP has this year opened the eligibility list to include a vast majority of more commonly available and owned defensive type Pistols and Revolvers. There are still restrictions as to allowable ammunition and match structure but the field of allowable handguns has widened considerably.
The new rules have recently been posted online and available at the following links:
CMP Service Rifle and Pistol Rule Book (focusing more on traditional Bullseye target marksmanship);
http://thecmp.org/wp-content/uploads/Rulebook.pdf
CMP Rifle and Pistol Games Rule Book (focusing more on less intense Bullseye sport shooting);
http://thecmp.org/wp-content/uploads/CMPGamesRules.pdf