I believe the game has max stacks of like 50 per 2 slots for handgun, 100 per 2 slots for the tmp, etc.Had no luck with the address for RE4
Went back to searching, went from 8bit to 16bit to 32bit unsigned. All searchers eventually return to 0.
Am burning through ammo, need to find a save point an try again, not checked signed values. But does the game allow you to store ammo over 9999 if not then its going to be a 16bit value. I'll try again later.