Gene, sweet looking calls! I assume you get your inserts from Al? I was wondering, do you make a taper fit of do you use the O-ring method? I noticed in your pictures that the insert does not go all the way into the barrel. Is that by design? If so, do you find the length of your fit and length of your barerl make a sound difference? I'm looking for more volume on my crow calls and was just asking to maybe go another direction?
Again, sweet looking calls!
Mutt~