TornadoShanks

Coming back to the OP's original question, imho, "It depends". In the case of Sagani, since she has a talent pre-spent, it's better to either focus on the hunting bow, or abandon bows altogether. If you're going to "eat" the talent and move her to a new weapon group, you may as well move to arbalest or arquebus, since you get added bonuses(inherent DR bypass, knockdown on crit), as opposed to just being a slightly harder hitting hunting bow. Regardless of choice of weapon, I think Penetrating shot is a bit of a waste for a Ranger, since they get two superior modal abilities for ranged dps in Swift Aim and Vicious Aim. Swift Aim is great if you set your ranger up with per-hit bonuses like elemental damage or Marked Target, and Vicious Aim gives you roughly the same damage boost as Penetrating Shot(+20%), with the added bonus of +10 Accuracy and no diminishing returns against low DR enemies. Let's be real though, Eder and Itumaak dialogue makes Sagani worth keeping in the party, even if she was spec'd to be as sub-optimal as possible. Eskimo-Dwarves ftw.

Thanks for the quick response. Now I can get back to enjoying what I think will be my new favorite Obsidian game.

After a bit of testing, I've noticed a few things about my character's and companion's accuracy stats. Mainly that 1) There appears to be no governing attribute that affects Accuracy. Tested with max Perception(per the manual) and max Dexterity(per the wiki) with no change either way 2) When a 1-handed weapon is equipped with nothing in the off hand, Accuracy increases by 12, or 17 if weapon has "accurate" property. Ranged weapons, rods/scepters/wands, 2-handed weapons, and dual wielding/unarmed all revert to base Accuracy. Not tested with monks as of yet. Mainly I'm just trying to figure out if this is a bug, or Accuracy is working as intended, in which case the tooltips/manual needs updating to reflect this mechanic. Thanks for your time.