Lever-Action

When used correctly, the brass-receiver rifles had an exceptionally high rate of fire compared to any other weapon on the battlefield. Soldiers who saved their pay to buy one believed it would help save their lives. Since tactics had not been developed to take advantage of their firepower, Henrys were frequently used by scouts, skirmishers, flank guards, and raiding parties rather than in regular infantry formations. Confederate Colonel John Mosby, who became infamous for his sudden raids against advanced Union positions, when first encountering the Henry in battle called it "that damned Yankee rifle that can be loaded on Sunday and fired all week.”

Source: Wikipedia

Historically, most lever-action rifles had a large tube magazine where ammunition was housed. Because the caliber of a repeater was significantly smaller than a single-shot flintlock firearms (or even revolvers), the damage of a repeater is less than those weapons.

With plentiful ammunition from the Fixed Capacity trait and only 5 feet of movement to advance the firing mechanism, repeaters are designed for Fighters, Rangers, and other classes with the Extra Attack feature. These weapons have comparably low Misfire scores to be more reliable for multiple attacks, and characters using repeaters in a Nations & Cannons game can use feats and items such as the cheap Bullet Starter wargear to further reduce the Misfire score of rifles.

GMBinder Link: Repeating Firearms