You've never tried to achieve hyper-velocities out of a 9mm carbine loaded with 80 grain bullets?
Or tried to see how fast you could push a 400 grain projectile out of a Ruger No. 1 rifle in 45-70?
What the hell?
Well, there was this one time with my S & W 44 mag Airlite. And at nice "Hot load" I did. Shot a 6 foot flame out the ballel. That was awesome. But scary.