I used a action wrench and a barrel wrench on the floor of my gun room. Got the old barrel off easier than expected. Set the gun on my lap and proceeded to set the headspace with my go/no go gauges. Didn't take anytime at all. Is there any error that can be induced by doing this not secured in a vise. I was going to use a vice to do it all on Saturday, but curiosity got the best of me. If someone tells me I need to do that, then I will do that on Saturday. The go gauge closed easily, but not sloppy and the no go allowed the bolt handle to travel downward just barely. Seems like if this gauges work as planned, then I am good to go. Now I just gotta get the brake aligned properly.