Check the top of your current seating stem for the number in brackets above. Redding Competition Seating Dies have set the standard for precision and accuracy in the most discrimination handloading circles. Numerous world records and championships are set each season with these dies. A new Bullet Seating Micrometer has now been created by Redding for use with all seating dies using 1/2"-20 threads. These new Bullet Seating Micrometers are available for both traditional (STD = Standard) bullet shapes as well as the new VLD (Very Low Drag) bullets. The new Bullet Seating Micrometers are a direct replacement for the original seat plugs and can seaily be changed from one die to another.