I've owned and hunted with a William Powell 13 bore cap lock SxS circa 1850 a couple of W.C. Scott 10 bore SxSs and owned a Purdey 9 bore sxs that was listed at Vintage Doubles for 9 Grande....I traded a guy two box calls that I made to purchase it for me. (I sent it back because of a rib issue).
My first modern SxS was a 1902 2.5" 12 ga. W.C. Scott box lock then several more vintage SxS....most were hammer guns including a 1879 10 bore Premier grade Scott and a 1881 Purdey but my all time favorite turkey killer was a 1925 WC Scott sidelock live pigeon gun I bought from Vintage Doubles for $5 Grande......
I've owned and deer hunted with a long list of muzzle loading rifles.....