update on the Fed 124gr hydra-shok retesting after mag spring replacement:
-- 7 shots loaded (one in chamber, 6 in mag)
-- used an older silver mag, with fresh 10-coil springs installed.
-- weak-hand only, slow aimed fire
==> shot #3 failed to feed, mouth of bullet caught at the bottom edge of feed-ramp. I stopped at that point.
Looks like this little R9 doesn't like the 124gr hydra.