It may be well to mention that the old time hunters nearly wiped out the duck population using those "Light Loads". This at a time in which flights blackened the sky there were so many of the. These old timers for the most part didn't Sky bust. They shot when the ducks were in range. Read some of Nash Buckingham's writing of the waterfowl shooting during the time he was active around the turn of the last century. Heavy loads were not common at all. In Great Day in the Morning he did speak of using a 10 gauge loaded with around 4 or 4˝ drams of powder with 1˝ oz of shot, but hat is the heaviest I recall him ever mentioning in his writings I have read. He spoke of many times using only an ounce. I believe that 1Ľ oz was much the more common waterfowl load for the 10 gauge of the era though. 1 1/8 was often used for a field gun, Don't think 1 oz was common in the 10 at all. Not saying it was never used, just not common.