L42/Enforcer Ammunication

[Bindi2]

If I understand correctly, proof firing Is based on pressure and not bullet weight. I believe a high power rifle cartridge proof round develops 150% of the pressure of SAAMI maximum. The purpose of proof firing is to prove the action can safely handle standard ammunition.

This is a military proof not civilian proofed rifle for one particular round in a proof up situation. You don't know what the failure rate was. There was failures in the range rifle proof programme where all rifles had to pass. SAAMI has had nothing to do with this or any input into how it was done. I suggest you read up on British proof rounds and how they are used.

Bruce in Oz velocities over 3,000fps with 155gn projectiles seem to be the norm using ADI brass. My L42 using NRAA loads is in the 2900+ bracket.