Well, I bought my first Benelli. I decided to go with an M4 model 11715. Huge fan of the extended tube and adjustable stock. It was unfortunately a gun broker purchase, so it wasn’t cheap. It should be here by the end of the week. This is also my first semi-auto shotgun. I’ve owned pumps and a side by side, but am new to this. I hear that it needs a special load for the break in period until it will accept field/target loads. What specifically does it need for the break in process? Is it load type, or velocity based?