ODD CHOKE BORING PATTERN

[Bob Jurewicz]

Thank you Frank and Dave for your valuable responses!
I did have a bit of time to throw a couple of loads at paper. I'm sorry to say my pattern technique will dissapoint Frank. I use 50 YD Pistol Targets at 30 yds. They measure 21" x 24". I have tested my guns this way for many many years (it works for me). I used RST 2 1/2" 7 1/2 Lites.
I'm always a little shacky so they are not centered, but they tell me what I need to know.
The right barrel is one that I usually get with full choke. The left barrel is comparable to my results with Modified choke barrels. I was surprised that the left threw as tight a pattern as it did.
The picture below is not good, but conveys the idea.
Bob Jurewicz