[kingu]

I would hope there would be a mix of unguided and guided, with the preponderance being unguided. I could certainly see times when a guided munition would have to be used.

I can not. If such a precision attack is required, move to another tool. Adapting this to use even more expensive bullets just wastes even more money.

[rlmorel]

My guess also is that the rate of acceleration getting it out the barrel might be a bit much for nearly anything that could guide it.

[rlmorel]

If the cost of the projectile is low (a streamlined, machined ingot?) then having a way to spot and adjust would be do-able for an acceptable degree of accuracy, I would think.