Matt from Demolition Ranch got started blowing up pad locks with a variety of different calibers. Returning to his roots, Matt has pulled out the baddest lock of them all. The Sargent & Greenleaf 833 is a $900 monster that weighs 4.5 lbs and is designed to withstand almost any physical attack. The lock looks like a miniature fallout shelter. What, if any, calibers will it take to crack this monster?