Whilst playing with the test DB with high techs, I worked out a design for a sensor guided rocket
Missile Size: 6 MSP (0.3 HS) Warhead: 15 Armour: 0 Manoeuvre Rating: 5
Speed: 133300 km/s Endurance: 0 minutes Range: 3.9m km
Active Sensor Strength: 0.24 Sensitivity Modifier: 400%
Resolution: 140 Maximum Range vs 7000 ton object (or larger): 1,130,000 km
Cost Per Missile: 17.1983
Chance to Hit: 1k km/s 666.5% 3k km/s 220% 5k km/s 133.3% 10k km/s 66.6%
Materials Required: 3.75x Tritanium 0.24x Uridium 13.0833x Gallicite Fuel x6.25
Because drones have a fixed engine of 5 MSP, I reasoned that if you could fit everything else into 1 MSP, you'd have a size 6 round that was fast, and although it lacked agility, it's ability to pass quickly though PD screens should result in fewer getting shot down, somewhat compensating for the lack of hits.
It's mostly suitable for taking on large, slow targets. I've chosen to put the largest possible warhead on this one, and tuned the sensor for 7,000 tons. If you chose a higher resolution, you could monkey with the numbers to give it a better stand-off range. Alternatively, against a heavy shield user, you might actually use an EM sensor, as the "biggest" targets would be the most heavily shielded, hopefully the high value targets you want to hit.
It works well as a FAC weapon. A FAC built at comparable techs should be able to carry 10 or 12 of these in box launchers, and a size 0.1 MFC which easily outranges the missile. Adding a small sensor to the drone makes it fire and forget, allowing the FAC to break off after launch, and not get too close to the target PD screen.
You do need to have decent drone engines and warheads to make this viable, and it's pretty much constrained to Size 6, but if your fleet uses Size 6 missiles, this could be a useful alternative load for some missions
