This implies the British military are using a high pressure load to attain this muzzle velocity.
"It dumps its pressure load into the straps," Dr. Schneider said.
By today's standards however, the design is considered relatively weak, and not suited to high pressure loads.
This liner may also carry a significant portion of the pressure load.
Amongst other factors, the depth of impression can depend on the external pressure load on the liquid.
The representation of this phenomenon becomes rather complex due to the biaxial and internal pressure load and structural configuration.
The main effect on the piezoelectric effect is that with increasing pressure loads and temperature, the sensitivity is reduced due to twin-formation.
These barrels are proof marked and meant to be used with light pressure loads.
Other loads that may be critical are pressure loads (for pressurized, high-altitude aircraft) and ground loads.
This avoids the risk of damage to some types, if their pressure loads are reversed.