The percussion cap was invented in the early 19th Century; there were no caplock rifles in the 1700s and Lewis and Clark carried flintlocks too.
The invention that made the percussion cap possible using the recently discovered fulminates was patented by the Rev. Alexander John Forsyth of Belhelvie, Aberdeenshire, Scotland in 1807.
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The Vicker was a fowler.
18 posted on 01/27/2013 2:22:06 PM PST by Uri’el-2012
(Psalm 119:174 I long for Your salvation, YHvH, Your teaching is my delight.)