Here ya go -
https://cpw.state.co.us/Documents/RulesRegs/Brochure/BigGame/biggame.pdf
Be sure to read the 'WHAT'S NEW' section
https://cpw.state.co.us/Documents/RulesRegs/Brochure/BigGame/biggame.pdf
Be sure to read the 'WHAT'S NEW' section