I am fairly new to ML but with the new inlines today seasoning and breaking in are simply a waste of time. I have a new MagBolt 150 in .50 cal and in my first shooting session with 295 HP PowerBelts and 2 50 grain pellets I was shooting 1-2 inch groups at 50 yards and 2-3 inch groups at 100 yards with a primitive bench rest. If you want accuracy then shoot, shoot and shoot some more with what you are going to hunt with. Just my 2 cents worth.