I use about a dozen SxS's each year(I've never shot an O/U)and hunt about 85 days/yr. Britt and American ~100 year old classics 12's, 16's and 20ga, 5.5 lbs to 6.75 lbs.It doesn't seem to matter which gun I use, it still takes about 5 miles of walking to get one bird based on my records over the last 20 years.The journey is the reward. My wife says I would hit more if I only had one gun;I can't see the logic in that.This year I'm going to use a 5.0 lb Jeffery 12 1895 hammer that has a single 29in barrel.It's light but long so maybe it will swing nicely and I can learn to stop taking a rushed first shot?