These images were made using a high-end Sony Video Cam, capable of very high shutter speeds.
Beals Framed Old Army 3277 was loaded with round lead balls, over 25 grains of 3FG Black Powder.
These images were featured in an article, In the
Blink of an Eye: The PercussionIgnition Sequence in Civil War .44s
in Man at Arms vol.25 #24, 2003
The article and images illustrated modern answers to period concerns about
loss of pressure at the barrel/cylinder gap.