These dies are manufactured with a 416 stainless steel body and D2 tool steel drive pins hardened and tempered to prevent scoring in the die. They also feature a Teflon coated guide bush in the top of the die and an oversized section in the drive pin to help prevent bending of the pin under the head from offline hammer blows. The base is made from 1045 medium carbon steel and Cerakoted to prevent rusting.

All tolerances are kept to very low limits so that the hydroforming fluid you use (water or thin oil) is not ejected everywhere when you drive the pin home. This also results in very true concentric case necks after hydroforming due to the design of our dies. (watch the video) The drive pin seals the case neck on the inside rather than the shell sealing on the outside against the die, as some other designs use.

Our trials carried out over some hundreds of cases in a number of calibres show that we can consistently achieve less than one thousandths of an inch neck runout, whereas neck expanding in a press will often result in .005” or more runout.

.270” neck PT&G Reamer #50231

.330” neck. Grizzly Industrial T-23216, PT&G Reamer #33641

.272” neck PT&G Reamer #44320

We recommend that you use our dies in a bench vice mounted in the supplied base rather than in your reloading press as we don’t believe thumping your reloading press with a hammer does anything to improve its accuracy or longevity. The die thread diameter is the standard .875” x 14tpi 60degree thread form as used on most dies, so it can be used in a standard press if desired. However, we do not supply a blank case holder with a die set, rather we supply a base the die screws into and bottoms out uniformly every time, thus holding case shoulder length constant.

Hydroform dies will save you their initial cost many times over in that you don’t need to fire form the cases. Our dies produce case shoulders that are almost as sharp as fire formed cases, necks without doughnuts and we have found we can process around 100 cases per hour. Saves a lot of powder, primers, projectiles, barrel wear, range time and can be done at any time day or night at your leisure. We use fired primers to seal the bottom of the case and save them for reuse over and over. A few drops of dishwashing detergent in a container of water will make filling the cases a simple process. Some dies, such as the 6mmBR to .30BR may work better if the case is not filled to the top of the neck. A little experimenting will show the best results. Wipe the outside of the case dry before placing into the die as any water present between the case and the die will affect the dimensions the case can be blown out to.