Colonel Marksman wrote:-- Wrong. See this. I defeated the Dark Eldar in close combat only because I made assaults. 10 Fire Warriors that charge is still 20 attacks. Also, 5 S:5 attacks with the 'O has helped me tremendously.
Now, I do agree that flying Tyrants are the scariest first, but they still only have a 3+ save. Railheads take care of that.
Also, although Broads are great against Zilla armies, Railheads are better against the swarms and the Zillas, are more mobile, and just as much range. I personally don't like Broads actually, but beside the point of the topic.
These two things made me frown. Yes, Tau can win in assaults. Does that mean it's a good idea? No. Also, do you want to assault Tyranids? No. In fact, an emphatic no. And that's an emphatic no for every army that exists (virtually. Some silly armies can actually hold their own, but for the most part, it's suicide to assault nids). Your best bet is to stand outside your transports, sink long ranged pulse shots at the swarms to whittle them down a bit, then hop into the transport when they get close enough and run. Make those gaunts a liability instead of an asset (those synapse critters are TIED to those gaunt swarms.)
Second: Railguns versus a 3+ sv Flyrant? Why? Ion still negates the sv and has triple the shots. With a lucky salvo of two ionheads fire (over one turn) could wipe a Flyrant from the table. A railgun will only ever inflict one wound. Railhead vs nids = lose. At least a broadside team carries multiple rails (plus the possibility of a lucky SMS or plasma shot).
Also, why can't that Flyrant be carrying a 2+ save? Warp Field is still a viable psychic selection (doubly so since the only other big option for Tyrant psychics is useless vs. Tau. I speak of Shadow in the Warp) and what's more it gives a 1 in 6 chance of ignoring that railhead shot you were depending on to wound the beast.
take ionheads or XV-88 teams unless you really need that big pie plate of death. If you do need the pie plate, consider why you don't have enough massed pulse fire and how you can fix the problem.