08-23-2020, 01:02 PM
Here is the difference for the tested ammo going from 24" barrel to 20" barrel. These velocities were obtained using a Magnettospeed chronograph a few years ago. The PPU ammo tested was ammo prior to the recall with large rifle primers.
Difference between 24" and 20"
PPU 120 grain HB BT
79 FPS
PPU 110 grain FMJ
69 FPS
123 grain A-Max, Hornady
63 FPS
123 grain SST, Hornady
72 FPS
Hand Load 123 grain Nosler CC, 31.0 grains CFE223, CCI 450
93 FPS
100 grain FMJ Wolf
80 FPS
Hand Load 107 grain SMK 28.5 grains IMR8208XBR, CCI 41
71 FPS
Difference between 24" and 20"
PPU 120 grain HB BT
79 FPS
PPU 110 grain FMJ
69 FPS
123 grain A-Max, Hornady
63 FPS
123 grain SST, Hornady
72 FPS
Hand Load 123 grain Nosler CC, 31.0 grains CFE223, CCI 450
93 FPS
100 grain FMJ Wolf
80 FPS
Hand Load 107 grain SMK 28.5 grains IMR8208XBR, CCI 41
71 FPS