I am near borderline safe pressures on a load for 12 ga Damascus guns and am a little concerned about the "new" vs "old" AA hulls. I understand the new hulls generate higher pressures with the same loads vs. the older hulls. Just to make sure I can discern the difference between the two, are the newer hulls visually different? Some are gray, I know those are newer. But do some of the newer red hulls have little or no marking on the outside and are maybe glossy? The older ones seem to have the large AA and have a duller appearance. Thank you!
