I musta lived a sheltered life, as I've had minimal exposure to such exercises.
I did shoot a golf ball once with a .22-250. It just simply vanished. It was on a large patch of bare ground, but no pieces found, anywhere.
There was also the time some chap left some 1/4" thick steel targets downrange. I tested them for him, and confirmed that even with varmint bullets a .22-250 will shoot through 1/4" of steel. Also interesting was a nearby paper target had many gray streaks on it. I finally realized the bullet core had melted, and splattered molten lead all around. It would have been damned unpleasant to be standing there.
A 22-250 with varmint bullets will penetrate through 3/8"" A-36 steel plate at 50 yards like Swiss cheese.
