This has been my experience as well through about half dozen different HKs, mostly USPs. Although I do shoot mostly steel case I have yet to see a malfunction.
And if you load the ammo backwards you turn a 115gr into a 124!!! Save money and get NATO like performance!
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A couple months back I had a bad day at the range with my RMR equipped USPC9 and some Speer 115 grain range fodder. Wouldn't go more than 2 rounds without a FTE, first time I'd ever had a malf with that pistol, even suppressed. The ammo worked fine in my MR918 and MR920 so I figured it was just too weak for the HK because 124 ran just fine the same session. Admittedly, I am very slack WRT cleaning, and after a good clean and lube it cycled fine, so I think it was probably just crud in the extractor claw. Even HKs won't run forever without some maintenance.
My PSP/P7 pistols, which I carried on duty, and during personal time, worked 100% reliably. That was 1985/1986. The P7/PSP was not the only single-column-mag HK pistols, at the time. Some of my colleagues had HK P9/P9s pistols.
Then, of course, it became apparent that we would die less often, if we used double-column-mag pistols. (Actually, it was the lack of duty holsters with Level 3 retention, that steered us away from those earlier HK pistols, as the old-school flap holsters were phased-out.) But, yeah, the overall market forces eventually demanded pistols that one loaded on Sunday, and fired all week, without having to reload.
Retar’d LE. Kinesthetic dufus.
Don’t tread on volcanos!