I have head space gauges. I've tested them with my AC556 and 187 series mini. They all headspace the same.
Not sure if my bolt was out of tolerance or not for the extractor mounting or ruger changed the extractor slightly. After wearing out the original I put a replacement one in and started...
Mine did something similar. I shaved the mating surface on the extractor that mates against the bolt. This will cause the extractor to hold the brass tighter. This slight mod fixed my gun.
I also had a spare 187 series mini bolt that would run 100% in my AC556 so I knew it was something with my...
Crossfire in flower mound
Its near the airport. Theyll let you fire without tether, they dont need to see your form 4... vet owner.
Heck if you can show him that you can draw and fire safely from holster... he will let yoy