Primer Drag: What Is It? What Causes It? Is It a Big Deal?
This expert-level guide from TheYankeeMarshal explains primer drag, a phenomenon where the spent primer shows a tail mark. It details the mechanical causes, primarily the barrel tilting before the firing pin fully retracts, and identifies factors increasing its likelihood, such as smaller firearm size and striker-fired mechanisms. The guide also assesses the practical implications, offering advice on monitoring for wear and proactive maintenance for high-volume shooters.











