but i don't know why but if my MFC has a range of 200M Km they can engage only at sometimes 150M Km and 130M Km
Because MFC act like active sensors when targeting a contact smaller than its rating, with reduced range.
Engine : 8 EP
WH : 1 , Fuel : 1.35 , Agility 1.57
Missile Size: 4.92 MSP (0.246 HS) Warhead: 10 Armour: 0 Manoeuvre Rating: 36
Speed: 32500 km/s Engine Endurance: 55 minutes Range: 106.9m km
Cost Per Missile: 7.012
Chance to Hit: 1k km/s 1170% 3k km/s 360% 5k km/s 234% 10k km/s 117%
Materials Required: 2.5x Tritanium 4.512x Gallicite Fuel x875
Development Cost for Project: 701RP
Looks like a missile. Only thing to note is that damage penetration is most efficient in squares (4, 9, 16, etc). You might also be wasting space with excess warhead space that doesn't add more damage. To check this take the desired damage and divide that by your damage-per-msp tech, then compare that to your current msp in warhead. Also, what size is that engine and is it max power boosted?