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A falling-block action (also known as a sliding-block or dropping-block action) is a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon and is actuated by a lever.
In a falling block or sliding block action, a solid metal breechblock "slides" vertically in grooves cut into the breech of the firearm and actuated by a lever. Examples of firearms using the falling-block action are the Sharps rifle and Ruger No. 1 .
Rolling-block breech Joseph Rider's 1865 patent drawings. A rolling-block action is a single-shot firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin. [1] The breechblock is shaped like a section of a circle.
The British Empire purchased rolling-blocks to arm the Egyptian Army during the 1870s. These were made in Liège, Belgium, in .43 Egyptian calibre and were issued with a sword bayonet. Rolling-block rifles were used against Muhammad Ahmad's Ansar Dervishes during the Mahdist War, including at the Siege of Khartoum where General Gordon met his ...
The sliding action is perpendicular to the axis of the barrel. When the breechblock slides down to expose the breech, it is referred to as a falling-block, as used in the Sharps rifle. A sliding block is common in artillery. A vertical sliding block rises and falls while a horizontal sliding block slides to one side. It is a strong design.
The overall length of a Model 1885 with a 28-inch barrel [3] is the same basic length as a Winchester bolt-action Model 70 with a 24-inch barrel. With a longer barrel, bullet velocities can be significantly increased over bolt-action rifles that have the same overall length, provided the proper combination of bullet and propellant is selected.
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Following the success of the model 1870, the Governor of New York ordered 15,000 Remington rolling block rifles and bayonets for his state's militia. These model 1871 rifles were very similar to the model 1870 rifles, but differed in some details. Field experience with the model 1870 showed that the mechanism jammed too easily in dusty conditions.