WebThe roll crimp is the most commonly seen style for revolver cartridges. As the name implies, the roll crimp entails forming a slight radius at the case mouth by pressing it inward against the bullet. Most bullets intended for … WebFeb 21, 2024 · The proper type is a roll crimp with the die adjusted so the the edge of the case turns in to the base of the crimp groove on the bullet. You get that by seating the bullet so the top edge of the groove is just a hair above the edge of the case. Then in a separate step, turn the case mouth into the groove.
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WebNov 16, 2024 · Only revolver rounds get a crimp, and that is simply crimping the case mouth into the bullet cannelure or crimp groove. Manuals talk about light to heavy crimps, but never define the term. I have NOT found that I needed any thing more than getting the case mouth crimped into the crimp groove and NOT touching the bullet enough to leave … WebApr 28, 2024 · The Roll Crimp. A roll crimp is obtained from the seating die, because there’s a small shelf located inside the die body. When the die is set low enough, the cartridge case mouth is pressed against this shelf, rolling the mouth inward into the groove in the bullet and locking the two components together. gmail difference between labels and folders
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WebDec 10, 2012 · The shallow crimp groove designs prevent overcrimping and overworking the case mouths. Many of the typical revolver boolit designs have crimp grooves that are, in my opinion, excessively deep and attempting to roll the mouth all the way to the bottom and keep the brass tight against the bottom of the groove can damage the boolit upon launch ... WebKeith-Style SWC with one crimping groove and one filled lubrication groove. In practice, the bullet can be crimped over the leading band, or on the crimping groove, as desired. A variety of wadcutter types exist: … WebThe Lyman 358156 is a dual-crimp groove slug of gas check design designed by Ray Thompson. The following load data is for 357 Magnum guns and large framed .38 … bolsheviks and ww1