A fellow I know who is a police officer, police firearms instructor and armorer will not set the trigger of a 1911 intended for service use to less than four pounds. He likes 4.5 pounds, and I have all my 1911s that I might carry set between four and five pounds.
"It is long been a principle of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully." -- Jeff Cooper