Would it be feasible to use a nuclear device as a shotgun?

That is, most of the kinetic energy of the bomb is directed (like discussions for the bombs in the Orion project). The bomb would be optimised to send tungsten bullets off at X km/s.

Then put that as the payload of a missile.

Edit: Fragmentation bombs was discussed in the second page of the article. Hmm... this would need a very tight spread of the heavy pellets, which is probably not possible with a nuclear weapon?

Edit 2: Add a 2nd level of explosive drive to the fragments? They disperse a bit (to make them hard targets) but know where the target will be and when. More like submunitions, I guess.

Edit 3: Rail guns to send (small) kinetic missiles at a high initial speed? These could potentially run in stealth mode for quite some time, before doing final course corrections.