Bassbob
Emissary
We're past the point of wondering if certain pistol rounds are going away. They're not going away.
The questions:
who is the blogger?
It's many people on youtube, and in the google, who are ranting, and ranting and ranting.
What .40 do I have?
1.0v M&P .40 Full size
So have you put any effort into figuring out why your M&P .40 jams? Or are you just assuming it has something to do with the caliber. Because it doesn't. I have an M&P Performance Center Shield in .40 and I have put a couple thousand rounds through it and it has never jammed even once. The reason yours jams is almost certainly ammo related, magazine related or user related. I seriously doubt changing the barrel is going to eliminate your problem.