In short and more frankly: there is no ammo system for a good reason. You thinking it would be cool is not a good enough reason to the contrary.

A better way to do this would be to store ammo in a lua variable, and when you "pick up" a clip it just adds it to the variable and deletes the item instead of storing (read; clogging up) it in inventory. This would be able to store different weapon types and also to share common ammo types.

You can even go as far as a total mod lua'ing up the guns, to shoot different ammo, eg: normal, AP, Explosive tiped, 00 buck, slug, etc. plus weapons to drop clips to pick up.

Its true, I believe we should not kill the classical fun of all times.

would be cool a guy that mines gold and turn on bricks like the older versions.
nice mod waiting to see it on B25

Clip style reload? So you actually have a clip fed gun? Magazines would make more sense.

Stripper clips, saves the enviroment.

Id really like to see this. If its working well, and the UI itself shows clips, and ammo, and it wasnt severly annoying.

I actually quite like this. I made the default actors use it and it's pretty neat to run around trying to kill enemies for their ammo.
I also made an ammo locker based on the MP3 ones.