19 /
Double-Alpha Zone
/ April 2011
Lastly, check the hook-to-breechface dimension as
described for the regular extractor. If you think you
have too much tension, you can adjust the tension of
the springs slightly by compressing them for about ten
seconds before installing.
Now on to the ejector. For most competition guns I
recommend an extended ejector because the longer
the ejector the sooner the round will eject. This is a
good thing.
The ejector can be shaped to affect the angle at which
the round leaves the gun. The higher the impact
point, the lower the ejection path. I prefer to bevel
the ejector from the top and the bottom at about a
10-degree angle. This creates a blunt point on the
extractor with an almost flat face. Since the round
contacts the ejector at only one point, this produces a
more consistent ejection pattern.
A contact point about 1/3 of the way down the face
of the ejector usually works well for scoped guns,
whereas about 2/3 of the way down works well for
non-scoped guns.
However every gun is different and these are just
starting points. When you are trying to adjust the
ejection make sure the rounds are not hitting the port
and coming out high.
If you keep adjusting the ejection pattern lower in this
case you will exacerbate the problem. One last adjust-
ment necessary when using extended ejectors is to
relieve the ejector on the bottom side so that it does
not make contact with the top round in the magazine.
Once you have made these adjustments take the gun
out and shoot for a while. Check to see that your brass
ejects to the same spot each time (make sure it is not
hitting anywhere on the gun on the way out) and, if
necessary, make further adjustments. You will know
you have achieved "ejection perfection" when all your
brass leaves the gun at the same trajectory in a nice
stream.
Now you are ready for that next big match.
Double-Alpha Mag Brushes