I have shot exactly 5 rounds of BOSS shells, the so called “ Shorty” 1 1/4oz of copperplated 5s. They were given to me as a challenge by Ramsey Russell, the challenge was to shoot 5 Canada’s with 5 shells, I had a pretty stellar field lined up and was able too.
What I learned was that just about anything works on Canada’s at 20 yards. The shells are of good quality with decent hulls and primers. They are “high brass” which may help with ejection but really these days is irrelevant. I only got 5 so I never got to pattern them but judging by the Canada’s I shot the patterns were very dense which shouldn’t be a surprise for small, relatively soft( compared to steel) out of Tight chokes.
My understanding is that Covid put a crimp on the Canadian side of things. I would happily purchase use them if they became available, they are good shells, but my main draw is the emphasis the company puts on shooting birds within the shells limits and also the fact they load them in sizes and loads not commonly offered by others. The openly recommend their customers pattern their guns, something that no big company has advertised to my knowledge.
For now I am shooting Kent Bismuth and Hevi-Bismuth, particularly in the 16 and 20. Modern steel is just fine in a 12 if you don’t push it past 40-45 yards. The smaller Bismuth sizes don’t give you any extra killing range but they give you denser patterns at the same ranges as steel. The #5s I shoot out of my 20 don’t give me anymore range than #3 steel but they flatten birds better at ethical distances.
