Is much as i didnt want to do it i called. The rules are clearly spelled out to me but to be safe i called several places including Bass Pro Shops in Denver Colorado.
I talked to the Manager of communications of the Colorado parks and Wildlife. His name is Richard Myiers, very nice guy. The rules are just as stated. A 50 caliber muzzleloader with a saboted bullet must weigh 170grns or more in Rifle season.
THe guy at Bass Pro-shops said the exact same thing. I also talked to a ma and pa store and they said the exact same thing. The Knight Ultra lite will be in Colorado this year.