Squib308 reported: agree looks like an ammo challenge. perhaps the brass is bulging? have you inspected the winchester brass in advance of vs. immediately after firing? greeprob reported: I just acquired my initial shotgun, but have working experience with handguns. I am looking for two points: For a HD gun https://highimpactrounds.com/product/mossberg-590a1-spx-12-ga-20in-8rd/