I'm glad you brought up the topic of barrel regulation. However, shotguns are not pattern tested with lasers and a lead sled. That is for rifles. The resulting patterns are not reflective of how the gun shoots in your hands. There are plenty of pattern testing protocols you can google. I'd recommend following one of them and noting the results. You'll be standing, shouldering the gun as in the field and firing lead. This is why shotgunners spend or used to spend so much time and effort on fit. A shotgun may shoot for you differently than it does for others. Using lasers and a lead sled won't tell you much.
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