Usually a jam like the OP had is caused by max spec ammo and minimum spec chamber. I've seen it happen a number of times with handloads when the shoulder is not bumped back enough.
A lot of shooters will tell you that mortaring is dangerous and you can usually open the bolt by using a screwdriver to pry back the BCG from either the ejection port or from the bottom if you can separate the upper from the lower. Prying on a rifle with a screwdriver is something fresh out of Bubba's bag of tricks.
I'd send it back and have S&W look at it.
Addendum: The OP will not be answering any questions. The original post is ten days old and it was his first post. This thread has turned into a lesson for other shooters that may be having similar problems.
Last edited by MichiganScott; 05-14-2017 at 02:52 PM.
Reason: addendum
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