As a Marine Corps veteran, I'm all about big guns, but this is a little extreme.
A video posted to LiveLeak shows the largest caliber rifle ever made — a .905 caliber. It is one of just three produced by SSK industries in Ohio.
The gentlemen trying to tame this beast in the video say the recoil is equivalent to firing 10 .30-06 rifles at the same time.
Some rifles kick like mules, but as the video's description says, I'd rather be kicked by an actual mule.
Check it out: