Product Summary
The K&M PowerStroke V2 Expand Mandrel for .408 caliber is an essential tool for precision reloaders who need to size brass before neck turning. Because commercial dies lack standardized expander buttons and brass is naturally elastic, this mandrel ensures the inside diameter is perfectly prepared. It works in tandem with the Mandrel Holder and PowerStroke V2 Press Adapter to iron out and slightly expand the case neck. This process allows the brass to spring back to the exact dimensions required for the K&M MICROADJUSTABLE Neck Turner. It is an ideal solution for preparing virgin or competition brass for consistent, high-accuracy performance.
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