If I understand the rules correctly, weapons with the Toxic quality deal no damage directly, but the result from the "damage roll" modifies a Toughness test to resist the effect of the toxin.
Thus, an Accurate weapon will have a much greater chance of poisoning the target, as he will generally get a bigger penalty to his Toughness test.
Thats all well and good, I suppose, but in general I feel that the straight 1D10 damage is a bit low. The same weapon without the Toxic quality would add 1 or 2 D10s of straight damage from it's Accurate quality, but the max damage potential of a Toxic weapon is 10. You can't even kill a Lvl 1 Mook with that.
Any suggestions on how to make "sniper needlers" on par with their "ordinary" SP brethren? I saw someone post somewhere that rather than have a generic Toxin causing 1D10, you could replace the Toxin with any poison from the GM Kit or elsewhere. Now we're talkin'