i came up with two weapons for 40k i dont know what i will call them or with which army they will go but i just wanted to kinda finetune these ideas with you guys.

i know its alot of text but please just read it through and leave a comment with what you think and maybe some ideas on improvement
enjoy

the (weapon name) is a weapon much like te harpoon used by fishermen on ancient terra, but instead of a barbed hook on the end of a spear attached to a rope
the (weapon name) has a drilling tip with grapling hooks right behind it.
the weapon is used to prevent a vehicle from moving by anchoring the cable to the ground.

strength 9 AP2 type heavy 1*

* when a vehicle suffers a glancing or penetrating hit from the (weapon name) and dous not suffer the vehicle wrecked or vehicle destroyed result on the damage table,
the cable is attached to the armor of the vehicle and the vehicle can move with restrictions depending on the direction it moves in:

opposite direction of the model firing the (waepon name): vehicle can only move 1D6 inches.

direction of the model firing the (weapon name): vehicle moves normal but after the movement of the vehicle is done add 1D6 inches to the distance.

other directions: vehicle moves normally but -D6 inches.

in the movement face of the player controlling the vehicle can try to snap the cable instead of moving
roll a D6 on the roll of a 4+ the cable snaps and the vehicle is free to move again next turn,
though as soon as the cable is snapped the tension makes the vehicle move 2D6 in the oposite direction of the model firing the (weapon name).
if the vehicle hits impassable terrain it suffers a hit on the side it touches the terrain with, the strength is equal to the amount of inches traveled.

the snapped cable then snaps back to the model firing the (waepon name), the model suffers a strength 8 AP 4 hit.
when the firing model is a vehicle the the hit is resolved on the side armor


and the second

the (weapon name) fires a projectile with a drill tip and incendiary charge,
it is used to pentrate the armor of a vehicle and deliver death in the form of super-heated gas to annyone or annything inside.

strength 10 AP2 type heavy 1*

*when a glancing hit is caused by this weapon treat it as if the shot missed,
when a penetrating hit is caused by this weapon instead of rolling on the vehicle damage table (or ork ramshackle table) roll on the table below.

1 premature detonation
the projectile detonates while still in the weapon and the model firing the weapon is treated as if shot by the weapon.
when the firing model is a vehicle the hit is resolved on the side the weapon is mounted, and when rolling on the damage table as a result of a hit caused by premature detonation,
the roll of a 1 instead counts as a 2

2 snuffed the flame
the fire inside the vehicle is put out, by the automated fire fighting system inside, heroic actions with a fire extinguisher preformed by the crew or by throwing a 'ole lot of grots onto the fire.
but the crew is to busy fighting the flames to controll the vehicle properly.
the vehicle suffers a crew stunned result as detailed on the vehicle damage table in the main rule book.

3 broken drill
the drill breaks while halfway into the armor and blows a chunk outof the armor but dous not reach the inside of the vehicle.
the side hit by the weapon lowers its armor value by D6 points and remains this way for the rest of the game.

4 driver injured
the driver is injured by the molten slag that used to be the roof of the vehicle.
the vehicle can move only half the distance it normally could, (example: a vehicle suffers a driver injured result would normally move 18 inches when moving flat out, but now it can only move 9 inches flat out.)

5 fuel explosion
the projectile hits the vehicles fuel storage and ignites it.
the vehicle explodes, dealing all models within D6 + D3 inches a strength 5 AP 4 hit.

6 ammunition explosion
the projectile hits the part of the vehicle where all the ammunition is kept and detonates it.
all units within 2D6 are treated as if shot by all the weaponsof the vehicle on which this result is rolled, igonoring line of sight or range that the weapons normally have roll to hit and wound as normal.

example: a chaos landraider suffers a result of a 6, for the range of the explosion a 4 and a 3 is rolled, there is one unit of chaos space marines within 7 inches of the hull of the landraider.
the chaos space marine unit then is shot by a twin-linked heavy bolter and 2 twin-linked lascannons (taking for granted that the landraider has no pintle mounted weapons)