Not me personally, but I bought an old Duster drag car once that had the top 1/2 of a 6 pack rod laying in the trunk. The rod had broken, but surprisingly hadn't hurt anything else except for hitting a piston skirt. I never saw the crank or the other 1/2 so I can't say if it was a broken bolt or a turned bearing that caused it.
They swapped in a set of LY rods and kept on going, lol. Had the old 2295 TRW slugs in it.

Friend of mine had a 600 hp 440 w/ a stock crank and six pack rods that ran high 9s in a back half cuda bracket car for a long time. I bought the motor and ran it for a little while, but then tore it down for a rebuild and put some Manley H beams in it.