gun safety

Woman Shot During Gun Show Demonstration | TheBlaze.com Looks like someone might have loaded a display gun at a gun show for kicks. Something every one should be aware of at a gun show is loons loading guns for publicity stunts. :(

This may be a stupid question that was answered somewhere I can't find, but I've seen a lot of posts about lever gun ammo saying something to the effect of, "I only load one in the tube..." This sounds like either a safety thing or a jamming thing, but I'm not sure...:confused: What kind of ammo...