[zippy13]

I don't know about your coach gun (Stoeger's specs are vague), but many top break guns have ejectors as well as extractors. So, if you've dry-fired, you're also resetting the ejector spring/s when you open.

Since it's a new gun, have you done an thorough initial cleaning and light oiling? The center pin pivot areas need a light grease -- a Perazzi factory mechanic once confessed to using a 50/50 mixture of Vaseline and 30W hi-detergent motor oil.