Hi all, new here and I have been searching around and there is a whole lot of info here, just getting confusing. I have a new lower that I want to build a hunting rifle out of, I have a 5.56 for fun, I want to hunt deer and maybe elk. I am reading a lot of conflicting data on hunting rounds. I am currently looking between the 6.8 and the .300BO. I am seeing that the .300 may not be the best choice, what are the laws and requirements here in CO? I am from Michigan and just not sure where to look. Thanks All!!