Nope. Special ammo usually just gives a second chance at your existing attack, though it does look like you have the option to use only the special attack. Basically, you'd attack with your base 6/6/2, but if you miss, you have a second chance at 1/1/1, or you can just only attack with the 1/1/1.
If that is the case this is worded really poorly; pg 76 of the rule book under Alternate Munitions 3rd paragraph:
In gameplay, an attacking player
who wishes to use specialty munitions
need only declare that his attack
will make use of its alternative
ammunition (and what type of
alternate ammunition it is).
The
player then rolls for a weapons attack
as normal, using the base range and
damage values for the special ability
that works with the unit’s alternate
munitions. If the attack is successful, adjust
the ability’s normal damage values and other special
effects as appropriate to the rules for the specialty
ammo type used.
Note that an attack using specialty munitions
replaces the unit’s normal attack values for
its requisite special ability. Unless otherwise
noted, use of alternate munitions does not
provide the unit with an extra bonus attack,
but will modify the standard weapon attacks
of the unit accordingly.The bolded text sounds to me like it replaces your normal attack. Why do you feel that it does not? Not trying to argue I just wanted to make sure I wasn't missing something.
