No sir. The only rounds we worked with in the Mossberg 590A1’s (my favorite combat shotgun) and Benelli M4’s were 95% buckshot, with some speciality door breaching rounds and slugs thrown in the mix. Nothing was 3”, all 2.75”.
As for the Turks, I’m impressed with their ingenuity. One of the guys made a legit rifled slug mold that he sells. A couple guys in my group bought this molds. One even got his FFL and now sells those slugs. I’ll get you a pic in a second.
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