MAMBA OAL Gauge Measure Maximum



  • It is important to ascertain the maximum Cartridge Overall Length (OAL) for each type of bullet that you are going to load for your rifle;
  • The maximum OAL is measured from the case head to the tip/ogive of the bullet with the ogive of the bullet just touching the lands of the rifle barrel.  It is described as “kissing the lands”;
  • If we know the maximum OAL, we can load the cartridge so that it fits into the chamber correctly. We can then also control the jump of the bullet to the grooves;
  • By measuring the maximum OAL correctly with the MAMBA OAL Gauge, we could even measure erosion that is caused by the throat being burnt away.

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