Brass Shotshell Crimp - General Ammunition Discussion - International Ammunition Association Web Forum

What would be correct name & time frame for the type of crimp on this Winchester 10 ga brass shotshell?

9mm Para Guide - International Ammunition Association

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Remington Boat-tail ammo

Remington Shotshell Unprimed Hulls 10 Ga 3.5

How are US ammunition manufacturers like Federal and Hornady able

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2 1/2 12 ga loads - Parker Gun Collectors Association Forums

Challenger High Brass 28-Gauge #4 Shotshell Ammunition, 3/4-oz

Journal IA - International Ammunition Association