Ritchie
December 10, 2006, 06:57 PM
Tested a couple of new 1911 mags with the results shown. Both mags
crushed the case mouth of the last round agains the front of the ejection port, and left the wreckage on top of the mag. Later, noticed that both mags had their step-type retaining lips bent, one the left and the other the right. Happened twice in about 70 rounds. The extractor is in peachy condition for damage and tension.
My analysis is: The retaining lips are about .020" too high, allowing them
to act as impromptu ejectors when there is no force preventing the mag
from rising in the frame during the recoil thumping and bumping. Thus,
raising the top of the latch slot will not prevent the mag from rising
too high. I will carefully lower the top edges of the lips. However,
this will require much shooting to verify reliability.:rolleyes:
crushed the case mouth of the last round agains the front of the ejection port, and left the wreckage on top of the mag. Later, noticed that both mags had their step-type retaining lips bent, one the left and the other the right. Happened twice in about 70 rounds. The extractor is in peachy condition for damage and tension.
My analysis is: The retaining lips are about .020" too high, allowing them
to act as impromptu ejectors when there is no force preventing the mag
from rising in the frame during the recoil thumping and bumping. Thus,
raising the top of the latch slot will not prevent the mag from rising
too high. I will carefully lower the top edges of the lips. However,
this will require much shooting to verify reliability.:rolleyes: