Can you use +P - sure. It's safe enough.
Do you want to shoot much +P through that gun - absolutely not. For all the reasons Harry said.
But if you want to know if you can leave it loaded for emergencies with +P ammo, I'd say go ahead. It will be more effective in stopping an attacker and won't harm the gun in small amounts.
+P does not blow up guns - it just increases the wear (sometimes dramatically). So it just depends why you're asking.