What is truly significant is the "square loads' are substantially cheaper than "round? loads". For example 25 pack of 16ga 1oz is about $7 while 1&1/8oz or 1&1/4 is $12 or $13 or more depending on manufacturer and country of origin. While I don't shoot 12ga anymore I think the difference between 1oz and 1&1/4 is about $6 or $7 which is very, very large indeed. I'm not mentioning old Euro 12ga game load of 1&1/16 simply because unless you use specialty ammo or foreign make (usually English) it simply isn't readily available. You can look forward to more "square load" users.