Every time I shoot my super duper hyper velocity match reloads my magazine blows out of the bottom of my rifle, my bolt carrier shears in two, and my upper receiver splits in half revealing my bolt which is "welded" into the locking lugs of the barrel extension.

This is getting expensive.

Should I back off on my powder?

No, seriously...

Anyone ever see this happen?  I've seen the photos but I've never spoken with anyone who has done this.