Tried it for the first time today.
Two guns.
Browning HiPower (FN Belgian)
Smith and Wesson 659
Fired seven full mags through the S&W 659.
Four failures to extract.
Each time, the extractor over-rode the rim, and the slide tried to pick up the next round, causing a jam.
Fired just two mags through through the HiPower.
One failure to extract.
Same behavior as the S&W.
Neither of these guns had ever demonstrated this sort of malfunction before.
This stuff.
Two guns.
Browning HiPower (FN Belgian)
Smith and Wesson 659
Fired seven full mags through the S&W 659.
Four failures to extract.
Each time, the extractor over-rode the rim, and the slide tried to pick up the next round, causing a jam.
Fired just two mags through through the HiPower.
One failure to extract.
Same behavior as the S&W.
Neither of these guns had ever demonstrated this sort of malfunction before.
This stuff.