Nice Pair!!
Those look great. I've always liked the P 38. The Luger is nice as well. I've never owned one but several of the guys in our old IPSC club had P 38s and one had a Luger. They shot PMC factory loads pretty much exclusively.
Two or three times a year they would loan the guns to the club for special matches where every shooter in attendance (anywhere from 25 to 60 people) shot about a magazine full of rounds through them. That's a lot of shooting over time! As far as I know it never hurt the guns.
I don't think I would run much if any +P stuff through their gizzards. They would likely handle some but I would not take a chance. The PMC stuff is pretty mild.
Just my cent-and-a-half! Again, nice guns!
Jack