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Hi!

Time for me to get stupid again. I'll excuse myself by stating I've never played a single game yet and think you guys seems so helpful.

I'm reading in the rule book about saving throws and armour piercing.

Lets take the Stormsword from Astra Militarum for example. It has a Sv of 3+. Since it's a tank I'm fantasising that the armour would protect from single bullets etc.

But at the same time the rule book states (on page 181 on resolving attacks) §4 "Saving throw: The player commanding the target unit then makes a saving throw by rolling a dice and modifying the roll by the Armour Penetration characteristic of the weapon that caused the damage. For example, if the weapon has an Armour Penetration of -1, then 1 is subtracted from the saving throw roll. If the result is equal to, or greater than, the Save characteristic of the model the wound was located to, then the damage is prevented and the attack sequence ends. If the result is less than the model's Save characteristic, then the model suffers damage. A roll of 1 Always fails, irrespective of any modifiers that may apply."

Since a lasgun has the AP of 0, could it still wound the Stormsword if the controlling player rolls a 1 or a 2? Given the guardsman rolled a 6 to wound (S3/T8)?
And would the melta guns AP of -4 cause that the Stormsword couldn't make a save throw against a wound from the melta gun?

Have I intepreted the rules correctly?

Both are correct. You would get a 3+ save vs Lasguns (imagine the beam of light hitting at just the right angle to reflect within and do some damage), and a 7+ save (before any other modifiers) against the meltagun (which is an anti-vehicle weapon).

Thank you very much! I'm feeling I'm starting to get the hang of this enough to play my first game now

Jedborg wrote:
Thank you very much! I'm feeling I'm starting to get the hang of this enough to play my first game now

Count yourself lucky you are learning 8th. You would spend the better part of a year trying to wrap your head around 7th.

 Lance845 wrote:

Jedborg wrote:
Thank you very much! I'm feeling I'm starting to get the hang of this enough to play my first game now

Count yourself lucky you are learning 8th. You would spend the better part of a year trying to wrap your head around 7th.

I spent 20 years playing this game (on and off admittedly) and even I couldn't begin to understand all of what 7th vomited up.

To address the OP, you have both situations correct, although technically the Stormsword would have a 7+ save against the meltagun attack. That being said, you normally cannot pass a 7+ roll on a D6, but lots of special rules could interact with a 7+ save, the main one being cover bonus, which could improve it to a 6+ or better, or add to the roll you make making a 7 possible on a D6.