I just got a brand new SX2. After wiping off all the lovely packing oil I will be looking to get it broke in. I've only had one other semi auto and I used a box of 3" 2s to start the process. Is it really necessary to use heavy duck loads like that or are heavy field loads like 1 1/8 clay loads or even 2 3/4" lead 5s or 6s the way to go? What is the best way? My instruction manual didn't actually say and I want to do it right.