GECO Glossary

Case length

Case length with rifle cartridges:

The case length is indicated in mm.

Case length with shothells:

The case length is also indicated in mm.
Whereas the total case length – not the length of the ready-loaded, crimped cartridge – is 65, 67.5, 70 or 76 mm. Crimped cartridges with roll crimps are generally approx. 6 mm shorter and with star crimps approx. 11 mm shorter than the nominal measurement indicated for the case length. The case length 67.5 mm was developed for the use in 65 mm and 70 mm chambers.
(CAUTION! Do not use a 70 mm case in a 65 mm chamber or a 76 mm case in a 70 mm chamber!).

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