RCBS X-Die 2 Die Set 270 Winchester

The X-Sizer die is a uniquely designed full length resizing die for bottleneck rifle cases. This die not only full length resizes the case, it also limits the growth of the case. This eliminates the need for repeated trimming after an initial trim is done to standardize the case. This die is not intended to shorten the length of the case, rather, as the case grows, the mandrel will reduce the normal rate of growth. This is the result of the case mouth coming in contact with the mandrel stop during resizing. Cases repeatedly sized in the X-Sizer die will grow a few thousandths of an inch initially, and will then stabilize below the maximum case length. Using the X-Sizer die eliminates the need to trim after each shot. X-Sizer dies can be used for full-length resizing with or without the X feature. Partial neck sizing can be done but only without the X feature.