Half cock carry on non D" guns will get you in trouble.
On the Decocker models the half cock notch on the hammer and the sear are very heavy duty, to take the abuse. (They are the same as the 83..it has no firing pin block and relies on the hammer stop notch for hammer down carry. )
On the Non D" models, it is only a secondary safety. It you use it how it is not designed, as a safety, the notch will wear and will stop working. The stop" portion of the sear is very small and same with the notch on the hammer.
I know of pistols that have no more notch in the hammer and do not stop...or they slip off of the notch to hammer down position..this would make me very nervous. If that is the case you had better hope your Firing Pin Block is working as designed.
On the 83 and D' models you are safe...on all others. It just isnt
recommended...thought it was worth mentioning...
Shoot well