Usually found at C:\Program Files (x86)\Steam\userdata\ \221040\remote . Modify the ID:

Note: 221040 is Steam’s App ID for Resident Evil 6.

Place the modified 100% save into the Steam remote folder and start the game. If prompted, choose to use your local save over the Steam Cloud save. Steam Community Activating Unlimited Ammo In-Game Once you have the 100% save loaded: Equip the Skill:

To prevent Steam from overwriting your new save with the old cloud version:

The rain in Edonia was relentless, a cold, grey curtain that seemed designed to wash away the sins of the bioterrorism occurring within the city limits. But Leon S. Kennedy knew better. You couldn't wash away the T-Virus, and you certainly couldn't wash away the guilt.

“After you beat all 4 campaigns... you will get an option to purchase unlimited ammo for specific gun types (Shotgun) (Magnum) etc. I bought Handguns & Magnums... With unlimited ammo Professional difficulty should be a lot easier.” YouTube · CompleteCarnage99 · 13 years ago

Unlimited ammo in RE6 is tied to that must be purchased and equipped.