W.E.G.
Member
The problem with ANY "standard" small rifle primer is that it is THINNER than the magnum variety.
This thin/thick difference does not exist when the subject becomes LARGE rifle primers. The large rifle primers are all the same thickness.
Standard small rifle primers will pierce and invert when you start approaching maximum loads. They usually are fine if you keep the loads light-to-medium.
I chronographed various loads using standard and magnum small rifle primers. The loads all chronographed to identical velocity ranges no matter whether standard or magnum primers were used.
Here is what convinced me to stop using standard small rifle primers with my hot loads.
These are CCI 400 primers with 23.5 grains N-135 and a moly-koted 80 SMK seated to quite a bit longer than magazine length.
I don't recall the exact OAL.
Torched firing pins:
Torched bolts.
Pierced and inverted CCI 400 primers.
(notice absence of flattening of primers - indicating not an "over-pressure" load)
This thin/thick difference does not exist when the subject becomes LARGE rifle primers. The large rifle primers are all the same thickness.
Standard small rifle primers will pierce and invert when you start approaching maximum loads. They usually are fine if you keep the loads light-to-medium.
I chronographed various loads using standard and magnum small rifle primers. The loads all chronographed to identical velocity ranges no matter whether standard or magnum primers were used.
Here is what convinced me to stop using standard small rifle primers with my hot loads.
These are CCI 400 primers with 23.5 grains N-135 and a moly-koted 80 SMK seated to quite a bit longer than magazine length.
I don't recall the exact OAL.
Torched firing pins:
Torched bolts.
Pierced and inverted CCI 400 primers.
(notice absence of flattening of primers - indicating not an "over-pressure" load)
