These Body Dies matrices have been designed to resize the entire length of the case body and to stabilize the shoulder position in such a way as to offer the correct 'bore' without going to involve the collar of the case itself.
 This matrix will make possible emergency operations even with the bullet inserted in the collar, such as an incorrect recalibration of the shoulder with its adjacent sinking, which precludes the chambering of the ammunition.
 Furthermore, this particular dies has such tolerances that they are better matched to narrow or custom chambers, we recommend the shellholder competition for a better calibration of the dies.