I was feeling left out on the citizen science. I cut open a shell of 12ga 1.25oz Boss 4’s that I received in the mail almost 2 weeks ago. Below are some pictures. 37 grams of shot, weighed on a cheap Taylor brand kitchen scale. I am not sure the degree of accuracy the scale has, so take it for what it’s worth. But that gives 1.3oz. I counted a total of 178 pellets. Most were round to the human eye, about 10 had visual imperfections like tear drops. According to the older Boss charts, 1.25oz of 4’s should give 193 pellets. Their newer chart says it should give 175. Obviously the copper plating would be altering shot size. If a 4 shot is coated with copper, it would size larger but should still perform like a 4 since the density would not be changed. With my limited knowledge, I’d be likely to argue against the logic of going back down a pellet size and expecting 4 shot performance. Perhaps for many of us 12ga shooters we’d be best off going to a 3” 1.375oz load of Boss. I should have done more thinking before ordering a case. I will need to do more testing on cardboard, but I hesitate to shoot an IC choke with 178 pellets past 30. As I’ve previously said, many of my shots near 40 and I’m not very good at holding off on those.