One consideration - My PPK/s in .22 uses the hammer spring as part of the recoil reduction. The pressure needed to push the hammer back helps to reduce the felt recoil. That is one reason the PPK's have such a strong double action pull, but are great in single action.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)