Various barrel lengths and shapes (round, octagonal, half-round, etc.). Rifles chambered in "standard" factory rounds are warranted for shooting factory smokeless powder ammunition as well, such as the 30-40K, .38-55, and .45-70.
Diverse barrel lengths and shapes (cylindrical, octagonal, half-cylindrical, etc.). Firearms chambered in "standard" factory cartridges are also suitable for firing factory smokeless powder ammunition, such as the 30-40K, .38-55, and .45-70.