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Old 13th February 2019, 06:19 PM   #14
fernando
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Join Date: Dec 2004
Location: Portugal
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Red face Help me get this straight ...

The popularization of barrel rifling brough a great advantage; while in the smooth bore one has to load a bullet with a diameter sligthly narrower than the barrel interior, such gap called “windage”, in which pressure gases are wasted, reducing the accuracy and effective range (distance) of the shot, with the rifling one loads a bullet slightly larger than the barrel bore, reducing the gases escape, thus increasing accuracy and effective range performance.
One handicap with the (muzzle loading) rifling system is that it takes a “lot” more time to load, as the bullet doesn’t ‘fall’ into the barrel, having instead to be thoroughly & firmly rammed with the rod. Such difference in loading cadence was well noted during the Peninsular War, where the first Riflemen appeared with the Baker gun.
With the turn off barrel this brought a distinct procedure as, the wider bullet was placed right in the chamber, the gunpowder being poured directly in place, thus its portion more rationalized, the result being optimum. We call this system "forced bullet" in my neck of the woods.
I gather that these barrels may not need to be so long, due to achieved performance with such system, but longer ones may also be seen.
(Photos courtesy John W. Burgoyne)

Am i talking nonsense ?


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Last edited by fernando; 13th February 2019 at 06:32 PM.
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