[Suicide Junkie]

It would have to be

1 1 1 50 40 30 20 10 0 ...

SE IV interprets the first 0 in the series as "out of range".

Actually, the zeros work fine.
The weapon won't fire at those ranges, but will fire normally if you step back into firing range

An interesting possibility is point defense that has an extreme case of myopia, as Slick put it
If point defense cannons could only fire at range 8, say, then missiles could be more dangerous either by closing range with the enemy to get under their PD cover, or by getting fewer shots at the missiles.
Fighters would be pretty effective too, so perhaps small point-defense-like guns with accuracy bonus, but no opportunity fire (point defense ability) to fend them off.