The dove that loafs along unalarmed, crossing at 35 yards, requires a lot of forward allowance. The sustained lead system is the easiest way to connect on such shots. Keep your eye on the dove and mount the muzzle in front of the bird. Swing, matching the dove's speed. Trust your subconscious mind to tell you the instant the lead is right. If you try to measure the lead, or analyze it, or double-check, I promise you will miss. Remember, lead doesn't have to be precise'you've got a wide pattern on your side. Focus on the bird, let the blur of the muzzle drift ahead of it, and shoot.