Powder horns were once a common accessory, both among mountain men and soldiers, as all firearms required a charge of powder. As technology advanced, so too did the powder horn, as it eventually became a Powder Horn with Valve.
Handmade Powder Horn cow Horn Black
Powder Horn with Brass Valve
02-438 The Shooter with Fast Flow Valve - Powderhorns and More
Charger Spouts, interchangeable, brass, for Powder Flasks & Horn Valves, available from 15 thru 200 grains - Track of the Wolf
Brass Powder Horn - UK
By The Sword - Powder Horn With Brass Powder Dispenser
Windlass Gun Powder Horn with Spring Loaded Brass Dispenser, Hand Carved Cap, Leather Strap, Black Powder Holder : : Sports & Outdoors
Powder Horn
Powder Horn with Brass Valve
Large French Powder Horn by BOCHE I EUR, A PARIS, #2497 Powder Flasks – Tortuga Trading
Reenactor's Fur Trade-era Colonial Period Powder Horn for Musket