@ iamaboringperson:
It is quite diffficult to hit a hard drive at 20 feet with a shotgun AND DAMAGE IT MASSIVELY. That is because you need at least SSG or LG shot to do the job. That means larger pellets, but fewer in number. Simple mathematics dictates that the fewer the number of projectiles in the blast, and the greater the distance, the less likelihood there is of multiple hits on a target the size of a hard-drive.
Now on the other hand, if Wayne had a ten gauge slug loaded in an Ithaca Roadblocker, and he was quite accurate, that would definitely cause bad blocks on the drive!
I did some tests with some 12 gauge slugs and found them to be accurate to at least 40 metres (in terms of hitting a target the size of a dinner plate) so I reckon at 30 metres you could hit a hard-drive with a slug. But 10 gauge, that's heavy stuff, man. It's a brute.
(the lower the gauge, the bigger the cartridge)
I think the most gentlemanly way (and most promising) would be to load three cartridges in the magazine of an FAL assault rifle, put it on full auto and squeeze the trigger as if you are firing one shot.
Voila!! Pieces of hard-drive casing and platters spinning into the air from 80 metres away...