The Hartin crimp was developed by a guy with that last name. What you do is take your normal 2-3/4" hull and cut it down to 2-5/8" and load it as you normaly would. After dropping the shot charge you place an over the top wad on the shot charge. Then place the hull under the crimp starter and start the short crimp; then move the hull to the finish crimp station and finish the crimp. The top wad just keeps the shot in place where a hole would normaly be in the crimp. It takes the place of the short kit. You may have to adjust the finish crimp die to force the crimp slightly deeper to get a secure hold on the top wad.
I've tried cutting Federal hulls and others to 2-5/8", loading them and use a spacer on the crimping stations where a top wad would not be needed. It does work, BUT by moving the crimp shoulder lower on the hull is a bit iffy as the hull has a bit of "memory" of being straight and the crimps want to come undone or at least open enough (at times) to lose shot and/or pressure holding the load back and get bloopers.
Jack Kuzepski
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