I have never loaded for this cartridge and don't know how to tell when I have crimped the bullet to factory crimp. Has anyone loaded this cartridge and can help me? Any info will be greatly appreciated.
I don;t load for .41, but I do for the .44 magnum. Using the Lee Factory Crimp die, I adjust it in a little at a time until I reached a tight crimp that did not bulge the case. Once it's set, and once you've crimped a few, the die can remain set, or if it needs any adjustment, you'll pretty much be able to guage it rather quickly. The first few will get the kinks worked out.
If you haven't reloaded for it, you undoubtedly have factory ammo on hand. Just match the crimp you see on that. Run a fingernail up the case; that's actually a quite effective way to make the comparison. Or just eyeball the change in light across the crimp. Again, it's more accurate than you'd believe.
I am a fan of the .41mag and have reloaded for the .44mag as well. I agree with the above posts as being the best way to approach the task. With experience you will develop a "feel" for the right crimp. Resist the temptation to overcrimp.
Using both cast and jacketed bullets in my 41 Mag BH, I've never had a problem with even heavy loads when following the above advice. If you see a noticible bulge in the crimp and the cartridges is difficult or won't chamber, its overcrimped.
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