On Dec 29, 2:42 pm, "dadiOH" wrote:
MiamiCuse wrote:
....
What about pressure treated 2x4 or 2x6? Those are still considered soft
wood right?

Wrong. Where you are, PT is Southern yellow pine. Depending on species -
there are several lumped into "Southern yellow pine" - it can vary from hard
to hard as a rock.
....

Unless it's extremely old, any new PT will still be quite soft
compared to, say, oak. Even dried PT SYP isn't the density of old,
virgin-growth SYP that is legendary as it is harvested from very fast-
growing young trees and simply doesn't have the narrow growth rings of
old-forest timber. It's harder than spruce and the other common
"whitewoods", granted, but it ("it" being PT) won't be a challenge for
a pneumatic gun--it's simply too new if it's PT and since OP is doing
major renovation/construction, he's looking more at brand-new than
really old, anyway.

Given an older (60+, say) structure, I'd agree it could be an issue...

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