Thanks to those that helped out with my questions concerning Colorado ML Regulations. I finally have a grasp on things.

I purchased my new ML this past weekend. I went with a TC Omega in .50 cal. I'm hoping to get to the range later this week to start figuring out some loads. Any recommendations would be appreciated. The load will be for elk. The salesman (who was not a 17 year old pup and seemed to have quite a bit of experience) said he uses 410 gr Great Plains with a 120gr charge (777). That seems beefy to me and I don't know how many times I want to shoot 120gr. Any thoughts on that?