rfwobbly
Member
This is really interesting development you might like to know about. If you are a professional ammo reloader or simply a high-volume competitive shooter who needs to insure that all your cartridge cases have been brought back to factory dimensions, totally eliminating case head enlargements or bulges from being shot in unsupported chambers, then you may be interested in a Roll Sizer.
Case rolling works by rotating the cartridge case between 2 massive steel dies. The gap between these 2 mandrills gets successively smaller, which effectively "irons out" every blemish in the softer brass as the case rolls its way to the exit. But by coming at the case from the side (rather than from the top as in traditional case Sizing), the Case Roller is able to resize the case over 100% of its full length.
This process doesn't eliminate the need for traditional Sizing, it simply removes the abnormalities from the brass so that each case is effectively the same size before entering the standard Sizing Die.
More info at: https://www.rollsizer.com/
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Case rolling works by rotating the cartridge case between 2 massive steel dies. The gap between these 2 mandrills gets successively smaller, which effectively "irons out" every blemish in the softer brass as the case rolls its way to the exit. But by coming at the case from the side (rather than from the top as in traditional case Sizing), the Case Roller is able to resize the case over 100% of its full length.
This process doesn't eliminate the need for traditional Sizing, it simply removes the abnormalities from the brass so that each case is effectively the same size before entering the standard Sizing Die.
More info at: https://www.rollsizer.com/
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