The Hazards of Old Ammo — Watch Out for Internal Corrosion! « Daily Bulletin

Above is a 26-year-old hand-loaded .300 Winchester Magnum case that failed to fire. After the misfire, the shooter used an inertial (impact) bullet puller to pull the bullet. In the process the case-neck sheared off. Here's a cautionary tale from the Tactical Rifle Shooters Facebook group.

References - George E King Petroleum Engineering Oil and Gas

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Old corroded ammunition hi-res stock photography and images - Alamy

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The Hazards of Old Ammo — Watch Out for Internal Corrosion! « Daily Bulletin