extractor grooveの例文
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- Next the rims, extractor grooves, and flash holes are cut into the case.
- The case has a thin rim and deep extractor groove in comparison to most rimless pistol cartridges.
- The extractor groove of the . 280 was changed to meet US specification and became the . 280 / 30.
- However, . 30 Remington cases can be made from . 30-30 cases by turning off the rim, cutting an extractor groove, and fire-forming the shoulder.
- The cartridge is said to be "'rimless "'if the extractor groove is machined into the head of the case so the rim is the same diameter as the adjacent part of the case.