06-11-2023, 11:13 PM
My experience is similar to LR1995's. It may depend on what brand of 7.62x39 brass is used. Also, tested results with CCI 400 vs. CCI 450 (magnum) primers I got slightly higher velocities with the the CCI 400. It may be a function of how the primer effects the burn of the powder.
The other minus for using 7.62x39 brass is the cost of a separate load development. A plus is that if you have lots of LR primers you can still shoot if SR primers are hard to get.
The other minus for using 7.62x39 brass is the cost of a separate load development. A plus is that if you have lots of LR primers you can still shoot if SR primers are hard to get.