Lee Precision, Inc. 0.303" .300 WSM/7.5x55mm Swiss Undersized Mandrel For Collet Neck Sizing Dies

When delivered from the factory, the collet die is designed to grip the bullet with a light press fit when used with cases of average hardness. This provides a secure yet gentle hold, ensuring precise bullet seating while minimizing any risk of damaging the bullet or casing. The light press fit helps achieve consistent and reliable reloading results, making it ideal for optimal performance during the crimping process.