I have read a few different posts on various forums about breaking in new barells. I have a new, never fired S&W M&P15A with a 16" chrome lined 1:9 twist barell. Is it necessary for me to go through a certain process to break my barell in? I'v heard things like you are supposed to fire 1 round then run a patch down the barell, repeat 5 times, then ten rounds followed by another patch, repeat 5 times etc... I never really understood what this does to help break it in. I recall most of the times I'v read about this were reguarding precision shooting, but if it will help me get more accuracy out of my gun, then I'll give it a shot. I just wanted to get some other peoples thoughts on this and possibly, if this is a good idea, an actual sequence of firing/cleaning to do it properly. And I apologize if this is a topic that has been gone over a million times or something, but I am having a hard time finding anything about the subject here.

Thanks, Mark