Perhaps not my best day afield, but certainly my most memorable, was the day I killed my first pheasant, which I did as a 12 year old with my father's 16 gauge Stevens Springfield sxs. The cock bird was rocketing down a hollow along a stream and I was standing on the hillside. Mounted the gun, swung on the bird and missed with the first shot. The gun was muzzle heavy enough that it kept moving in spite of me and the second shot dropped that bird like it had hit a wall. Probably the most excited I've ever been in all my 50+ years of bird hunting.