The Alan Alan routine that is mentioned was called "SharpShooter". The effect was as stated by many of the others who posted, a card is "selected" then the deck is shot with a cap pistol and then the "selected" card is found to have a bullet hole in it, along with some burn marks.
Now if your deck lacks the burn marks, but has the holes in it, I think the effect was something called the "Houdini Deck" sold many years ago by "Haines House of Card".
The effect went something like this, a card is selected,and returned to the deck, a shoelace/string is passed thru the deck and the deck is covered, then lo and behold the 'selected" card then falls to the ground as it is only card not bound by the shoelace/string.
If that's the deck you have, haven't seen that routine in years.
Hope this helps