Many catridges where you use cast bullets use an expanding die after sizing prior to seating. It looks to me like the case mouth is undersized compared to the bullet and then pressure of seating is deforming the bullet.
Might be source of issue?
Many catridges where you use cast bullets use an expanding die after sizing prior to seating. It looks to me like the case mouth is undersized compared to the bullet and then pressure of seating is deforming the bullet.
Might be source of issue?
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