How long do crossbow bolts have to be to hunt with a crossbow?

Question:

I am wanting to buy a crossbow to hunt with during the any weapon season but before I buy one I want to know the length of bolts that I need before I buy one.

Answer:

You can find specifications for archery equipment in the 2014 Big Game seasons and rules book (page 100). Under Archery equipment it reads: "it is unlawful to pursue or kill big game animals:  with a bolt (crossbow) less than 12 inches from broadhead to nock inclusive."

The answer to your question is discussed further in a previous question found at the link below: 
https://fishandgame.idaho.gov/content/question/are-homemade-arrows-legal...