Any experience with Walther PP super in 9x18 police/ultra?

[Dschuttig]

Has anyone ever slugged the bore on a Walther PP super in 9x18? I'm trying to find out what the groove diameter tends to be.


Thanks,

Dan

[W.R.Buchanan]

The 9x18 Makarov round has a .365 bullet diameter. 9x17 is .356.
Randy

[JeffG]

I recall I size my cast mak bullets .366.

[poppy42]

I size my Makarov boolets for my random P 64 and my Bulgarian Makarov to .363. Xtreme accuracy(same hole accuracy) and absolutely no leading. While the Makarov Will shoot bullets size to.365 The P 64 will not chamber boolets that big. Considering that the Polish copied a lot of the aspects of the Walther I would suggest you try a smaller boolet. If you’re interested send me a PM and as soon as it stops raining here and dries out I can send you a few to try.

[Texas by God]

The 9mm Ultra is a shortened 9mm Luger that works in Walther PP Ultra (Super) blowback pistols. It was never popular in the US; I believe ( could be wrong) that it was invented to skirt around a " no military cartridge" rule for German police. As such it would probably slug .356".

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[onelight]

Texas is right :) https://en.wikipedia.org/wiki/9×18mm_Ultra

[JeffG]

The 9mm Ultra is a shortened 9mm Luger that works in Walther PP Ultra (Super) blowback pistols. It was never popular in the US; I believe ( could be wrong) that it was invented to skirt around a " no military cartridge" rule for German police. As such it would probably slug .356".

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Very interesting, thank you.

[Dschuttig]

Yes, the 9x18 police is different from 9x18 Mak. I'm just wondering if anyone has actually slugged the bore in these to see what the actual dimensions are. I have a p-38 that has a groove diameter of .3595, which is obviously much larger than the nominal .355. Just wondering if the 9x18 Walthers follow this same pattern.