#10 Competition Shellholder Set, 11610

To maximize case life and the accuracy potential of your reloads, it is desirable to size fired cases the minimum amount that allows loaded cartridges to chamber freely.

Most hunters and many other shooters seeking smooth chambering reloads, full length size their cases each time. Since the interior dimensions of sizing dies are determined by the manufacturer, adjusting the shoulder setback is the only control a reloader has over how much a fired case is sized.

In the past, sizing die adjustment was made through the trial and error method of adjusting the die body in the reloading press. While acceptable results can be obtained using this method, precise adjustments were difficult at best. Using this method, firm contact with the shellholder (squaring the die) was not always possible. As a result, irregularities in brass hardness and thickness, as well as the uniformity of case lube affected shoulder setback. The resulting headspace variations created can adversely affect accuracy.

Now you can control headspace.
The new Redding Competition Shellholders are packaged in five piece sets in .002" increments (+.002", +.004". +.006", +.008" and +.010"). Each shellholder has a distinct black oxide finish and is clearly marked to indicate the amount it will decrease case-to-chamber headspace. You can now easily adjust the shoulder bump to customize cases to your specific chamber.

Competition Shellholder Sets now available in the following sizes: #1, 2, 4, 6, 7, 10, 12, 18 & 35