The Barbell Turkish Get-Up is one of the exercises in the Holliday Barbell Challenge. For most people, it is very challenging, requires very good shoulder and hip function (mobility and stability). In fact, this week I was working with a former powerlifter, who had difficulty using more than 20 pounds. Sure enough, he had mobility issue in his shoulder from an old injury.
If you can't keep good alignment of the bar over the shoulder joint, and your shoulder over your base (opposite arm and legs) then the exercise will be challenging with even 15 or 20 pounds. In the video, I am lifting 65 pounds with my left arm (less stable shoulder). Notice how my focus is on the shoulder stability, always making sure the bar is stable at each position.