The first step in evaluating a cartridge case and chamber design is to gather all necessary
data and complete a successful baseline CASAS run. Now we can screen the data for undesirable
conditions:
- Excessive Axial Strain - High axial strains increase the probability of case rupture
during the firing cycle.
- Interference at end of cycle - Large interferences at the end of the cycle indicates that
case extraction could be difficult.
- Long time lag between fwd and aft case contact with chamber - This condition often results
in excessive axial elongation and high bolt loads. It can be corrected by subtle changes to case wall
thickness or gaps.
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