tag:blogger.com,1999:blog-4229172837911249933.post4331420255284505621..comments2024-01-23T13:10:25.332-05:00Comments on Nails and Sawdust: BoolitsMike Silviushttp://www.blogger.com/profile/10406468736304441962noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-4229172837911249933.post-64910590818337250942017-02-24T12:12:20.994-05:002017-02-24T12:12:20.994-05:00Added a photo from the 44 Mag page of the Lyman ca...Added a photo from the 44 Mag page of the Lyman cast bullet handbook above referencing the need for a heavy crimp. In answer to your initial question, a roll crimp is easier to achieve consistently for a handloader at home using a manually operated hand press VS a taper crimp done with a big pneumatic machine in a factory.Mike Silviushttps://www.blogger.com/profile/10406468736304441962noreply@blogger.comtag:blogger.com,1999:blog-4229172837911249933.post-23897061935169304522017-02-24T11:40:37.149-05:002017-02-24T11:40:37.149-05:00FWIW I am also completely self taught. From what I...FWIW I am also completely self taught. From what I have read on the 44 Mag you do want a good crimp as the bullets can jump out of the case just from recoil of previous rounds fired. And that would lock up a revolver cylinder. The crimp can be either a roll crimp as you describe on home loads or a taper crimp. On a 44 mag you do want a hard crimp on it as you don't want the bullet to jump the case prematurely and want the powder ignition to build up to proper levels to ensure full combustion and thus full pressures to achieve correct performance. A lot of lever guns with tubular magazines also use 44 Mag and a hard crimp is critical there to prevent pushing the bullets back in to the case when they are stacked end to end. The roll crimp is a more secure hold on the bullet. Nothing wrong with it. Taper crimp are typically seen on a semi-auto rimless case where the case seats on the mouth and that diameter is critical. I suspect that they do a taper crimp on commercial rimmed ammo like the 44 Mag as it is easier to control via pressure adjustments on a machine to adjust as needed for particular bullet characteristics, but then I don't know for sure. Another thought is that perhaps they do a taper crimp to accommodate 44 Mag semi auto handguns like the Desert Eagle and the LAR Grizzly that perhaps are set up to seat on the case mouth in the chamber. Mike Silviushttps://www.blogger.com/profile/10406468736304441962noreply@blogger.comtag:blogger.com,1999:blog-4229172837911249933.post-67755491019428986212017-02-24T09:21:57.405-05:002017-02-24T09:21:57.405-05:00Well, the stuff I loaded shoots from a Ruger Vaque...Well, the stuff I loaded shoots from a Ruger Vaquero, but it made me uneasy that my reloads had a feature the commercial stuff didn't. I am largely self taught on reloading. I had an old man from the gun club help me get started, he gave me a set of dies for the 9mm luger, and I bought a Lee starters kit, then he walked me through a couple of sessions and that was it. Most stuff is easy, because I always case size my reloads, I don't fireform them and then just neck size them because I have more than one weapon in each chambering. I don't make cartridges out of other chamberings because I have enough boxer primed brass for everything now. But that obvious crimp on the .44 mag gave me pause. The round you described in your last sentence is what my reloads look like.<br /><br />Thanks for the info.Harry Flashmanhttps://www.blogger.com/profile/05071021900005041592noreply@blogger.comtag:blogger.com,1999:blog-4229172837911249933.post-26098644557438880702017-02-23T16:28:58.049-05:002017-02-23T16:28:58.049-05:00OK yes you mean the hard neck crimp on the case mo...OK yes you mean the hard neck crimp on the case mouth you get from your dies. I have not noticed it on commercial 44 ammo, But then I have not looked for it either. But given the power for the 44 mag I'd think it is appropriate to have a heavy roll crimp on the case mouth especially in a revolver cause those pills can jump out of the case just from the shock of the previous shot and lock up your cylinder. Not an issue with a single shot like mine. I have some PPU 310 grain 44 mag ammo here that does not show a roll crimp. But I can tell it is a very fierce taper crimp as you can clearly see the outline of the bullet through the case, and can tell exactly where the bottom of the pill is.Mike Silviushttps://www.blogger.com/profile/10406468736304441962noreply@blogger.comtag:blogger.com,1999:blog-4229172837911249933.post-52031844975736211612017-02-23T16:20:05.157-05:002017-02-23T16:20:05.157-05:00Not quite sure what you mean. Are you talking abou...Not quite sure what you mean. Are you talking about the crimp groove on the bullet?Mike Silviushttps://www.blogger.com/profile/10406468736304441962noreply@blogger.comtag:blogger.com,1999:blog-4229172837911249933.post-60970584825182312252017-02-23T15:39:56.148-05:002017-02-23T15:39:56.148-05:00When I reload .44 magnum, I get a very tight seal ...When I reload .44 magnum, I get a very tight seal on the bullet at the case neck. I use fmj commercial bullets. I don't see the same seal ring around the necks of commercial loaded ammo. Do you get that?Harry Flashmanhttps://www.blogger.com/profile/05071021900005041592noreply@blogger.com