terez has it. The 1100/1187 had a light contour target barrel with more open ports to cycle the lighter target loads. They were an extra add on or came on the premier target guns of various verities. They still have the archaic reliability issues but when they work are excellent. For wet and still cycling light loads, a gas gun (in my opinion) beats out anything inertia and each sporting or skeet event I attend has solidified this. Best value for money is a Winchester SX4 every day of the week and best overall for something easy to find almost anywhere is definitely a Beretta 400/300 dependant on budget.