Blast Weapon Deviation Charts

This is the preferred outcome

Titan weapons, being mostly 5" or greater blasts, are very accurate weapons. Imperial titans have a BS of 4, so the greatest deviation they can get (rolling double six) is 8". When you consider the size of the blasts (up to 10" diameter) and the likely size of a target it becomes easy to see just how easy it is to hit.

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The tables above show the numbers you'll get with each roll of a 2D6. The second part shows the modified scatter roll with a BS of 4. The three other tables show the scatter roll required for the blast to miss the centrepoint completely. By this I mean that when the blast is first placed, the centre hole must be over one model, or point on a vehicle. The table shows what has to be rolled for the template to miss this point entirely, and by how much it will miss.

Below is a Baneblade with a Litko template sitting over it. The bands are in half inch increments (the numbers indicate diameter, not radius).

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The template is slightly off centre, but it shows that a final scatter of 2.5-3" from the edge of the template would be required for a miss in the vast majority of scatters. Applying this to the tables you can see how likely a scattering shot is to hit.

Firing a MTC for instance (10" blast) would need an eleven or twelve to miss entirely with its blast (1/12 chance). Given it is better for the MTC to score a direct hit, a base scatter of 2" less would be preferred - this still has a 15/36 chance (about 3/7) due to the Baneblade's massive footprint.

This plays into what I said earlier about the VLC against the LSB. The 5" LSB shots will hit 30/36 shots, while the 7" VLC(R) will hit with 33/36 - pretty even odds. The 10" blast VLC carried by the Warlord would hit around 35/36 times, and only miss if the arrow was pointing to the narrowest part of the tank. Hitting 97% of the time on a 'miss' is pretty good if you ask me.


That's pretty much the basic theory of it all - since Baneblades are the most common superheavy out there I use this as a way to crunch the numbers on weapon effectiveness / likelyhood of scoring kills. Stompas have a roughly 6-7" body diameter so work pretty much the same. Eldar SHs are longer but narrower, so it depends on which way the arrow ends up pointing. The same can be said for Tyranid and Daemon GCs, though work out with your opponent beforehand if hits need to be applied to the body of the creature or its base.

Other applications include working out the best place to bomb groups of infantry or massed light vehicles.

Or you could just try and roll more hits ;)