Details: 12- or 20-gauge gas auto; 23a4 shells; 7 to 71a2 lb.; 21 barrel; black synthetic stock. Cantilever scope mount (12-gauge only) or iron sights. Scope mount, $620; iron sights, $573. The Scoop: If you ask my shoulder, Remington’s 1100 takes the sting out of heavy loads better than any other auto ever made.