[Badboo]

No gas pressure from the last round fired in a revolver turns the cylinder to the next round. Your finger does that.

Interestingly there was an automatic revolver (semi-auto) made see

http://www.forgottenweapons.com/early-automatic-pistols/webley-fosbery/

[Dr. Bogus Pachysandra]

Badboo,
My 1856(?) revolver copy copy turns the cylinder when you let off the trigger.Couldn’t that be classified as semi-auto?

BTW; It’s a blast to shoot in the dark 10 feet of flame and smole is scary!