Kaylee
Member
Metallic cartridges have been available since before the Civil War
Very true.
However "were available" and "were available on a large enough basis to supply an army at war with" are very different things. There was no shortage of arms advanced enough to make an incredible difference already being made at the time - and many were used here and there. Heck, even contemporary Sharps breechloaders loaded with paper cartridges would have upped their rate of fire tremendousy.
But it simply wasn't logistically possible (especially this side of the line) to field even the existing "advanced" arms in large enough numbers to make that difference.
Now, if you go back to say 1845 rather than 1861 and build a factory and stockpile for fifteen years, that might make a difference. But the point is... arms technology was not a limiting factor in the US Civil War - logistics, camp sanitation, political considerations, tactics that hadn't caught up with what even contemporary issue arms were capable of -- all those were the issues at point.