Rate of Twist Test
How to you test the rate of twist? I've read posts here where people have bought guns and didn't know the rate of twist and then I've read posts where someone rebarreled a gun and asked for a specific rate of twist and that was not what they received.
One of my rifles is currently on it's way to the 'smith to be rebarreled. When I get it back, I'd like to test to verify the rate of twist. How do you do it?
I'm not gonna shoot here. I'm gonna shoot waaaaaaaay over there!