Lee Factory Crimp Die 7mm Remington Magnum
Lee Precision factory crimp die for 7mm Remington Magnum and 7x64 Brenneke. Uses a powerful collet to firmly crimp bullets in place, improving accuracy by creating more uniform pressure curves and reducing velocity variation.
Lee Factory Crimp Die for 7mm Remington Magnum
The Lee Factory Crimp Die represents a significant advancement in reloading technology, particularly for magnum cartridges that present crimping challenges. This specialized die employs a collet mechanism to apply a rifle-type crimp that is more powerful and consistent than traditional crimping methods.
Key Features
- Collet-based crimping system applies a firm, uniform crimp to the case mouth
- Works with or without crimp grooves — the collet is powerful enough to form a crimp groove if needed
- Dual caliber compatibility — handles both 7mm Remington Magnum and 7x64 Brenneke cartridges
- Improves accuracy through more consistent bullet seating and pressure curves
Why a Firm Crimp Matters
A properly crimped bullet doesn't move during the firing sequence. This means pressure must build to a higher level before the bullet begins to move, creating a more uniform pressure curve throughout the burn. The result is reduced velocity variation from round to round — a critical factor in precision shooting.
Testing has demonstrated that even bullets without crimp grooves shoot more accurately when crimped with this die. For handloaders working with magnum cartridges, where consistency directly translates to downrange performance, the Lee Factory Crimp Die is an essential tool.
