Is "extra damage" a game term?

[Ferrix]

Iku Rex

Your weapon specialization quote is part of the description, not the benefit of the feat.

Your quotes regarding immunity to critical hits works slightly, however in the actual description of critical hits there is no mention of the multiplied damage being extra, but just being multiplied.

 

[Ferrix]

EDIT: And though again Iku did find some contrary references, it seems that the 'extra dice don't get multiplied' is a good rule of thumb. Of course, this being the Rules forum, I'm sure that this will never do.

Well, the important thing is probably extra dice, since both examples from the Penetrating Shot feat are specifically extra damage from dice only.

 

[Iku Rex]

EDIT: Okay, so Iku Rex found some references in other parts of the SRD to support his point. I have an annoying tendency not to look up the rules on psionic powers when referencing rules on critical hits, so you might understand why my initial reaction was to doubt your claim.

That is why God created searchable SRDs like the Hypertext SRD and Andargor's SRDs.

..., it seems that the 'extra dice don't get multiplied' is a good rule of thumb.

That's the basic Player's Handbook rule I quoted in my first post to this thread, yes.

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Iku Rex

Your weapon specialization quote is part of the description, not the benefit of the feat.

That's true. A pretty odd place for a game term used "consistent[ly] and purposeful[ly]" in the rules, yes? But if it's just plain English it works fine.

Your quotes regarding immunity to critical hits works slightly, however in the actual description of critical hits there is no mention of the multiplied damage being extra, but just being multiplied.

Also true. No consistency.