Thread: Split shoulders

I did some measurements (probably not the ones needed).

There were two different weight projectiles which appeared to be: 139gr and 140gr Norma Vulkans. The 139gr was loaded with 45.5gr of an unknown extruded powder, and the 140gr with 45.0gr of what looks to be the same powder.

I measured the cases with a headspace gauge:

Undamaged fired case: 1.768"
Split cases: 1.766", 1.767" x2, 1.753"

Virgin cases: 1.761" x3
Resized cases: 1.740" x3, 1.776"

The loads are approximately 25 years old and were made for a military surplus Carl Gustaf. The shoulders split when fired in a Ruger 77 Mark II.