I don't know how exactly this Bits and Mortar work and how it updates. Have you talked to the store about it. What do they say?
(edit: Tomas just said that is fixed, so however this B&M works, it should be fixed.)
The errata list.
Players' Manual:
Page 66: The ammo dice rules have been clarified and slightly modified.
AMMO DICE: Firearms give you ammo dice to add to your skill roll. Six such tan colored D6s are included in this boxed set. You can add as many ammo dice to your attack as you like, from zero up to the rate of fire (RoF) rating of your weapon or the number of rounds left in the magazine minus one, whichever is lower. For example, if you have three rounds left, you can add up to two ammo dice.
If you have only one round left, you cannot add any ammo dice to our roll. In this case, or if you choose to use no ammo dice, only one (1) round of ammunition is used in the attack. This is typically only the case for sniper shots (page 63), but can also be useful if you are very low on ammo or your weapon is in a bad condition (low reliability rating).
Page 112: Fragmentation grenades and improvised grenades no longer have a direct damage effect.
These hand grenade types doesn't have direct damage anymore. Meaning you can only target a hex with them. edit: I should mention that the infograph picture of those two hand grenades are still wrong (they should direct damage), but the table is correct.
Page 113: HE rounds for vehicle cannons up to 73mm have slightly increased armor penetration.
HE ammo for vehicle cannons up to 73mm have their armor penetration changed from +2 to +1.
Referee's Manual:
Page 11: Clarifies that the Operation Reset offensive was launched in April 2000.
There was a date on page 11 that say that it started early July and that is wrong, should be April.