Forster - Deluxe Die Box (Empty) Centered powder fouling

powder fouling

Dimensions: 1

will not wear out and will maintain its precision and alignment for years of service

This points to you having a very tight chambered gun and would assume either an improperly cut reamer or a chamber that was cut below Min Chamber Dimension headspace

Forster - Deluxe Die Box (Empty) Centered powder foulingDeluxe Die Box: 8 x 5 x 2, holds up to three dies. These tough, oversized cases will accommodate virtually any combination of two or three handloading dies including the longer Ultra Micrometer dies. In addition to all standard calibers, the new boxes are also long enough for dies in the extra long Ultra Mag calibers. The deluxe die boxes incorporate blow molded, double wall construction, a process that provides a layer of air to protect the dies