Using optics to see vapor trail?
I'm not sure if this the correct forum for this question, but here goes.
I've heard about using binos or a spotting scope slightly out of focus in order to see the vapor trail of the bullet heading into the target. I would really like to do this, but don't know how.
Any insight would be great.
Thank you, Steve
To hunt... or not to hunt...? What a stupid question.