According to Mike Krause, the later Mausers had a stronger spring in them. Something to do with making it more compatible with some of the hotter ammo back then. And he said that sometimes, running 115 or even 125 will sometimes result in jamming and such. He said it'll be fine with a 147 load. And he seems to know his Lugers.
Now if it was an older Luger, I might not fire the 147 grain in it. And remember, these are not + loads. Just a 147 grain hollow point. Also, if you go to the Federal site, the Tactical HST rounds I bought actually have a slower muzzle velocity and lower energy level than their 115 grain JHP.
http://le.atk.com/ammunition/federal...ls.aspx?id=580
vs.
http://www.federalpremium.com/produc...un.aspx?id=121