Thread: My friend erma
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Unread 05-22-2012, 01:26 PM   #2
ithacaartist
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Congratulations Ross!

Sounds like you have a keeper, great luck in finding this cooperative individual. Since I last posted Erma stuff, I've acquired a KGP 69. I'm impressed at how cute it is; the little dickens even has a real holdopen and its exterior lines are quite a bit truer to the original Luger. And it works a little better than my La.22's.

If the sub sonics work with yours, stick with those, for sure, to be easiest on your pistol's action. The evidence of over-hammering will appear on the rear toggle's inner curve, which is pounded by the breech block being thrown back with too much oomph; and on the front toggle link, where over-folding of the joint puts marks on the toggle from contacting the breech block. If ammunition with enough power to leave these artifacts on the mechanism is used further, it will spall the rear link in the area noted, and will likely tear the front toggle link into three pieces by ripping the link from the bottom, where it is thinnest/weakest, right up to those contact marks.

My trials with different .22 loads have continued to the extent that Remington Target and CCI Tactical, at 1150 and 1200 fps respectively, have helped my La.22's the most. I'm due for another stint at mag lip alignment, once I have the factory mag alignment mandrel I'm after, in attempt to improve their function beyond about the 85-90% reliability I've coaxed them into at this point.
My ET.22, mechanically a brother to the EP.22, is a bit more forgiving; it digested 40 Wolf Match Target (1050 fps) with only a handful of failures with 10/10 function for one mag. I'm sticking with 40 gr for all these trials.

David Parker
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