How do the bow-related Archery skill perks affect crossbows?

Solution 1:

Everything that affects bows affect crossbows as well (damage multiplier etc), even Deadly Aim. Those perks that aren't immediately obvious work like this:

• Hunter's Discipline - more bolts (from mobs who drop bolts in the first place)
• Ranger - move faster while aiming and reloading
• Quick Draw - faster reload

Update: The mechanic of the weapons can be confusing.

• Bow: Ready-draw-aim-shoot-ready.
• Crossbow: Ready-aim-shoot-reload-ready.

Quick draw yields faster draw for bow and faster reload for crossbow. Ranger lets you move faster while aiming with your bow or crossbow. The thing with a crossbow is that you aim an already loaded weapon and with the bow the draw action is part of the aiming. In the end, it's no real difference.