Ralph79
Ralph79
2 posts
Joined June 2017

Setting dies

Hi,
i've both a used SDB which I converted for .38/.357.

I need the settings for the dies and can't find them. How many inches does the crimpdie has to be turned in, how much for the small powder bar, ...

Thx
Ralph
Beglium
dillon
Administrator
dillon
3,111 posts
Joined July 2007

RE: Setting dies

Ralph,
there are no fixed dimension at which to set the adjustments. For the powder measure, you need to fill the hopper at least 2/3 full of powder, dispense and return 10 or 15 powder charges, then begin weighing the powder with a scale. Your reloading manual has minimum and maximum charge weights for that specific caliber/ bullet weight/powder. You use the scale to weigh a thrown charge, then through trial-and -error, adjust the bolt on the end of the powder bar until the measure repeatedly dispenses the desired amount of powder.
The crimp die adjustment depends on the type of bullet you are loading as to how far down it is tightened. If the bullet you are loading has a groove to crimp into, then you adjust the crimp plug height until the case mouth is smooth, and no evidence of the case flaring is present. Beyond that, it depends on how hot of a load you are loading as to how much crimp you need. Maximum loads require a heavier crimp, where the case mouth is curled into the crimping groove on the bullet. This ensures that the unfired bullets in the revolver cylinder do not work forward under recoil. Some very slow burning powders, such as Winchester 296, Hodgdon H110, Accurate #9, require a heavy crimp to slightly delay the bullet from leaving the case, to aid in a complete powder burn. Lighter loads may not need any crimp, other than to ensure the cartridge easily enters the chamber. A lighter crimp results in longer case life.
Ralph79
Ralph79
2 posts
Joined June 2017

RE: Setting dies

Thanks a lot for the info