If any resistance is felt, there's either a defect in the
extractor groove and/or the cylindrical runout of the round.
32 Long by removing the rim, cutting an
extractor groove and sizing and trimming.
All feeding must be from the magazine and the extractor claw rides in the case's
extractor groove starting at the time the cartridge moves upward out of the magazine.
A cartridge case may rupture into the
extractor groove in extreme cases.
407 inch and case body ahead of the
extractor groove is 0.
Whereas chamber support of a rimless centerfire cartridge in an AR-15 barrel terminates a bit forward of its
extractor groove, the chamber of the F17-L fully supports a .
All that remains now is to cut the
extractor groove in the rear of the barrel.
4 rimless cartridge requires small pawls to reach into the
extractor groove remove the case.
According to NAA, "Behind the neck, all case dimensions and configurations, including the
extractor groove, rimless case, cartridge diameter and bolt-face engagement are identical to the .
This time I examined it to find bright spots around the case head about 1/8" ahead of the
extractor groove.
Revolver cartridges have rims which are of a larger diameter than the cartridge case while semiautomatic cartridges are "rimless" with the rim normally the same diameter as the cartridge case itself necessitating an
extractor groove be cut in front of the rim for the extractor to grab.
A possibility was that the pickup rail picked the cartridge up at the
extractor groove rather than the rim.
