dalewelch- the answer was listed earlier. they used a 7in. non vented bbl.
i have found their powders do about what they say besides being clean burning. this was under their test conditions in their laboratory. you don't have their equipment,therefore you won't get their results. doubt seriously if that data is flawed. it was just done under very controlled conditions with optimum equipment. ymmv
i have found their powders do about what they say besides being clean burning. this was under their test conditions in their laboratory. you don't have their equipment,therefore you won't get their results. doubt seriously if that data is flawed. it was just done under very controlled conditions with optimum equipment. ymmv