![Why do they call it a "battery" cup primer? - General Ammunition Discussion - International Ammunition Association Web Forum Why do they call it a "battery" cup primer? - General Ammunition Discussion - International Ammunition Association Web Forum](https://global.discourse-cdn.com/business6/uploads/cartridgecollectors/optimized/3X/3/7/3726f12a23d1f194bae788502083c0cc18b28e04_2_690x215.jpeg)
Why do they call it a "battery" cup primer? - General Ammunition Discussion - International Ammunition Association Web Forum
![Review: Determining the Effect of Cartridge Case Coatings on GSR Using Post-Fire Priming Cup Residue - Florida Forensic Science Review: Determining the Effect of Cartridge Case Coatings on GSR Using Post-Fire Priming Cup Residue - Florida Forensic Science](https://www.floridaforensicscience.com/wp-content/uploads/2017/07/Determining-the-Effect-of-Cartridge-Case-Coatings-on-GSR-Using-Post-Fire-Priming-Cup-Residue.jpg)
Review: Determining the Effect of Cartridge Case Coatings on GSR Using Post-Fire Priming Cup Residue - Florida Forensic Science
![Side and top views of a percussion cap, comprised of the primer cup,... | Download Scientific Diagram Side and top views of a percussion cap, comprised of the primer cup,... | Download Scientific Diagram](https://www.researchgate.net/publication/336659708/figure/fig2/AS:815522039996427@1571447014540/Side-and-top-views-of-a-percussion-cap-comprised-of-the-primer-cup-anvil-and-primer-mix_Q320.jpg)