Like most magic it's the mind that gets tricked.
1. They put on full frontal body armor including Kevlar helmets lasers etc.
2. They talk endlessly about how powerful magnums are. The crowd mostly who have never shot a gun let alone a magnum are played rite into their already confirmed mindset from TV, movies that magnums shoot through engine blocks and blow cars up that get shot by them. The sheeple buy it lock stock and barrel. In their mindset here comes dirty Harry with the big bad magnum forget it’s a 357 and not a 44 sheepple know no difference.
Now how the trick works
3. 1st ammo used, I have the bullet and casing so there is no debate. 135gr FMJ Remington LITE LOAD PRACTICE AMMO.
To prove the bullets are really traveling across the line on stage they put up large thick sheets of glass.
4. ???
5. The bullets hit glass shattering it there for proving they really shot. One thing though since I am not a sheeple I know half inch thick glass is one of the best bullet stops out there the force of the bullet is entirely absorbed by the glass. Penn almost fell on his face diving foreword to catch the bullet that ended up in my hand.
6. Profit!!!
Now there was a bunch of stuff they did during the show that had me flummoxed But the bullet trick was in my back yard even Penn and Teller no matter how much I am a fan they cannot overcome physics……not yet anyway