C No.7 Mk1 1944

[Boom-Boom]

This fine training rifle shoots very well and is a true piece of attraction for young and old shooters as well.

In a few impromptu plinking sessions it has busted golf balls at 100 yards and clays at 200 yards with regularity.
Many young kids shooting scoped, banana style mag., semi-auto could not beat the old lady on a round per round basis.

my sole complaint or concern is coming from the less then reliable case extraction. Probably 50% of cartridges fired require a second or even third bolt cycling to extract the spent case.

The empty shells do not exhibit ant longitudinal scratch indicating a burr at chamber mouth. I have cleaned extractor claw and matching recess in barrel chamber side.

Was thinking of lightly relieving the inner portion of extractor to push firmer on cartridge side/rim to achieve more positive contact under rim.

Any suggestion to help achieve better extraction reliability??

tks in advance,

BB

Information

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[jona]

Check the extractor spring, it might be too weak or broken. Have never had a problem with mine. Also, check the extractor itself to see if it is worn, chipped, or broken.
Another thing to check is the spent cartridges for signs of a problem in the chamber. They might be sticking on some sort of deformity.

[Boom-Boom]

JONA,

As stated, spent case are not scratched.

Will try swapping spring.

Do not have a spare extractor, so it is difficult to compare to another one.

Extractor looks nice and complete.

tks,

BB

[Badger]

Hey Claude ...



Regards,
Badger

[jmoore]

If the firing pin (or even the extractor itself) has been able to "dink" the chamber opening, then the burr raised can hinder extraction. There's a tool made that can iron out the raised area w/o removing any metal. Works too!

[No4Mk1(T)]

It’s funny I remember this from my time in Sea Cadets. We used CNo7 every Friday night. I remember you would have to pluck the spent round out of the chamber about 50% of the time. I never thought of it as an issue. We were trained to just remove the round and insert the next. We didn’t use the .22 magazine follower and the spent round just dropped into the magazine casing. If I could only go back in time! CN0.7’s and C1A1’s. Life was good.