Yes... about 3.5 to 4 (or 1.75 - 2 for engines) for missiles is what I have at Ion tech as well and is enough to produce decent AMM.
Here is a missile using a 0.6MSP engine at x3.5 power modifier, 48 agility per MSP and 4 warhead strength per MSP.
Missile Size: 1 MSP (0.05 HS) Warhead: 1 Armour: 0 Manoeuvre Rating: 17
Speed: 25200 km/s Engine Endurance: 3 minutes Range: 5.3m km
Cost Per Missile: 0.6994
Chance to Hit: 1k km/s 428.4% 3k km/s 136% 5k km/s 85.7% 10k km/s 42.8%
Materials Required: 0.25x Tritanium 0.4494x Gallicite Fuel x25
It will have about 15% chance to bring down this ASM that uses the same missile technology.
Missile Size: 5 MSP (0.25 HS) Warhead: 4 Armour: 0 Manoeuvre Rating: 10
Speed: 29400 km/s Engine Endurance: 100 minutes Range: 175.9m km
Cost Per Missile: 2.8375
Chance to Hit: 1k km/s 294% 3k km/s 90% 5k km/s 58.8% 10k km/s 29.4%
Materials Required: 1x Tritanium 1.8375x Gallicite Fuel x1250
To me this is barely acceptable performance from an AMM. I don't know what technology level you have but in this case you would need one additional level of warhead strength or agility (preferably both) to make the AMM worthwhile.
It you be even worse if you faced a missile like this...
Missile Size: 5 MSP (0.25 HS) Warhead: 4 Armour: 1 Manoeuvre Rating: 12
Speed: 21000 km/s Engine Endurance: 75 minutes Range: 95.0m km
Cost Per Missile: 2.7161
Chance to Hit: 1k km/s 252% 3k km/s 84% 5k km/s 50.4% 10k km/s 25.2%
Materials Required: 1.25x Tritanium 1.4661x Gallicite Fuel x850
Now you are down to 10% kill ratio... pretty pathetic...
![Wink ;)](http://aurora2.pentarch.org/Smileys/classic/wink.gif)