My M4 just returned from service today.
After speaking with Benelli, I was told that the lore of the couple hundred loads for a
break in period was not a maintenance practice condoned by Benelli. They are warrantied
to cycle malfunction free straight out of the box.
Through my own experiences I see their point. This is my second M4. The first ran straight
like a champion.... right out of the box. No break in period was required.
While some preach the break in period, how does a too weak spring correct itself?
A stronger spring may lighten up, but what side of the spectrum are you on?
While I haven't been out to test the M4 yet, I am confident (hoping) that Benelli
corrected the malfunction. I was fine with waiting two months. I wish I had done
it sooner. I took the time to try many of the things mentioned here in the forum,
but in the end I should have just sent in from the get go.