Originally Posted by
Daan Kemp
Normal military ammo velocity was about 2430 f/s with 173gr flat bottom spitzer bullets. This was the load the P14/Mk1/4 were sighted for.
Depending on the propellant, bullet shape and weight, rifle condition, etc, velocity may be quite a bit higher without pressure problems. The P14 had a longer barrel than the No1/4 series and would probably get higher velocities if the propellant used is tailored, possibly slightly slower burning for the longer barrel? Or a different shape bullet.