My 10 is a hammer double with 0 choke and I am still working out loads. I have been shooting various RST loadings and so far have not found one to pattern better than a tight 12 at 40 yds. I just bought a flat of their #4 1 1/4 oz 2 5/8” shells to try next time out. I also bought a box of Salt Creek to compare. RST just posted some new loads in 10, first I have seen for sale there in 2 years.