A few entity questions.

[Flubadoo]

[lua]function SWEP:PrimaryAttack()
self.Weapon:SetNextPrimaryFire( CurTime() + 0.07 )
self.Weapon:SendWeaponAnim( ACT_VM_PRIMARYATTACK )
self:EmitSound( ShootSound )
self:ShootEffects( self )

if (!SERVER) then return end

self:TakePrimaryAmmo( 0 )

local x
for x = 1, 1 do
local r1 = math.random(-100, 100) / 10000
local r2 = math.random(-100, 100) / 10000
local r3 = math.random(-100, 100) / 10000
local Forward = self.Owner:EyeAngles():Forward()

local ent = ents.Create( "hunter_flechette" )
if ( ValidEntity( ent ) ) then
ent:SetPos( self.Owner:GetShootPos() + Forward * 32 )
ent:SetAngles( self.Owner:EyeAngles() )
ent:Spawn()
ent:SetVelocity( Forward * 5000 )
end
ent:Fire("addoutput","basevelocity 0 0 -30",0.1)
ent:Fire("addoutput","basevelocity 0 0 -30",0.3)
ent:Fire("addoutput","basevelocity 0 0 -30",0.5)
ent:Fire("addoutput","basevelocity 0 0 -30",0.7)
ent:Fire("addoutput","basevelocity 0 0 -30",1)
ent:Fire("addoutput","basevelocity 0 0 -30",1.3)
ent:Fire("addoutput","basevelocity 0 0 -30",1.5)
ent:Fire("addoutput","basevelocity 0 0 -30",1.7)
ent:Fire("addoutput","basevelocity 0 0 -30",2)
ent:Fire("addoutput","basevelocity 0 0 -30",2.3)
ent:Fire("addoutput","basevelocity 0 0 -30",2.5)
ent:Fire("addoutput","basevelocity 0 0 -30",2.7)
ent:Fire("addoutput","basevelocity 0 0 -30",3)
ent:Fire("addoutput","basevelocity 0 0 -30",3.3)
ent:Fire("addoutput","basevelocity 0 0 -30",3.5)
ent:Fire("addoutput","basevelocity 0 0 -30",3.7)
ent:Fire("addoutput","basevelocity 0 0 -30",4)
ent:Fire("addoutput","basevelocity 0 0 -25",3.7)
ent:Fire("addoutput","basevelocity 0 0 -50",4)
ent:AddEffects( EF_ITEM_BLINK | EF_BRIGHTLIGHT );
ent:SetOwner( self.Owner )
util.ScreenShake( ent:GetPos(), 4, 3, 0.9, 120 )
ParticleEffectAttach("larvae_glow_extract",PATTACH_ABSORIGIN_FOLLOW,ent,0)
timer.Simple(2.7,function() ParticleEffectAttach("striderbuster_explode_dummy_core","Weapon_Combine_Ion_Cannon_Explosion",PATTACH_ABSORIGIN_FOLLOW,ent,ply,0) end)
end
end
[/lua]

So how would I make the flechettes not fire in a completely straight line and what is the effect when the combine balls explode (the huge explosion)?