It's weird... the halting positioning of the guide rod. A piece of the polymer in the recoil assembly "tray" maybe grabbing things? Sometimes there's a bit of battery on the sides in there and a buildup happens.
The +P isn't fun to shoot, but gives you a pretty good defensive load... more than up to +P snubby .38's.
Good luck.
USAF Retired '88, NRA Life Member. Wife USAF Retired '96
Avatar: Wynn re-enlists his wife Desiree, circa 1988 Loring AFB, ME. 42nd BMW, Heavy (SAC) B-52G's
Frédéric Bastiat’s essay, The Law: http://mises.org/books/thelaw.pdf
Thomas Jefferson said
“A government big enough to give you everything you want, is strong enough to take everything you have.”
and
"Peace is that brief glorious moment in history when everybody stands around reloading".