Optimum barrel length for NFA shotgun?
What is the optimum barrel length for a NFA shotgun?
I want to know what length the barrel where the shot opens up.
spread with 13in barrel is 7inches at 10 feet
spread with 9in barrel is 15 inchest at 10 feet----this would be winning load
note these numbers are just for comparison and not real results of test....
I am looking for someone that has real experience doing this or can direct me to article or post.