6.35 mm is also known as .25ACP, or .25 Auto for short. Most gun shops will have this in stock.
The .635 caliber does not refer to a standard ammunition type commonly recognized in firearms terminology. It may be a miscommunication or a niche designation. If you meant the .635 caliber rifle or pistol, please clarify the context or specific model, as common calibers include .635 (or 16mm) are rare and not widely used in mainstream firearms.
any 45 cal ammo will work in a 45 cal pistol
NO
No.
Yes it is
yes
No.
No such caliber as .32 Special. Use the caliber of ammo marked on the gun.
if it's a revolver......32 cal revolver ammo if it's a pistol......32 cal pistol ammo
marlin 35 cal. lever action. rifle/ Marlin makes the rifle ,but not the ammo for it.
gun shows, custom ammo makers
No.