Lyman Pistol Neck Expanding M Dies

In the field of handgun reloading , consistent bullet seating plays a crucial role in final accuracy. Lyman Pistol Neck Expanding M Dies were specifically designed to improve this often-overlooked step while minimizing case wear.

Double progressive expansion of the collar

Unlike a conventional expander, this system works the case neck in two distinct stages. The first expands the inside of the neck just below the bullet diameter to achieve even and consistent tension. The second brings the neck opening to the bullet diameter-or slightly larger-to facilitate perfectly centered seating.

Improved projectile alignment

This process improves the centering of lead or jacketed bullets during seating. In practice, this promotes cleaner alignment with the case axis and can help improve the consistency of reloaded cartridges, particularly with flat-based projectiles.

Protects cases and reduces stress

Lyman M Dies reduce excessive neck deformation compared to conventional expansion systems. This approach helps limit brass stress and contributes to extending case life, a point particularly appreciated by regular reloaders.

Adjustable settings to suit your needs

By slightly adjusting the expansion plunger further, it is also possible to achieve a slight flare of the neck. This configuration is particularly suitable for users of lead bullets , in order to limit the risk of marking during seating.

• Use: reloading handguns
• Compatibility: lead and FMJ projectiles
• Function: alignment and progressive expansion
• Benefit: Extended lifespan of the cases

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