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Can, or should, the grooves be used for crimping?

April 26, 2017crimping grooves Used

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Can, or should, the grooves be used for crimping?

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Well, yes and no. Some bullets have a groove that is located at the proper crimping point, others do not. For instance, the 458-350FP has the forward groove located at a point that would make it proper to use as a crimp groove. Doing so would provide a 45-70 cartridge OAL that is suitable for current Marlin and Winchester lever guns. Of course, if you wish a longer OAL, you can crimp in any groove that you choose to. Whether you can increase the OAL, will be determined by the throat in your rifle. Heavy recoiling calibers, 40 and above, are provided with a groove that would serve as a crimp groove.