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DESCRIPTION

40 Smith&Wesson/10mm Neck Expander M Die
by LYMAN

Improves accuracy of cast and jacketed bullet reloads. Doesn't stretch cases as does standard expander button and extends case life. The die's expander plug has two steps. The first step expands the inside of the case neck to just under bullet diameter for precise case neck tension on the finished reload. The second step expands the case mouth to bullet diameter or slightly over. The allows the bullet to be started perfectly center in the case mouth and properly aligned with the axis of the case neck.

Note: By adjusting the neck expanding plug slightly deeper, the second step also provides a slight flaring of the case mouth for reloaders using cast bullets.

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