Not sure what you mean by overshot card. When roll crimping I just use a 10ga OS card. The 16ga cushion wads fit nice in a SP-10 plastic wad. I personal don't like roll crimps. There's more messing around to straightening them back out to accept wads. I use a Mec600 for reloading. If you really like roll crimps it can still be used for everything but the crimp part. At one time, with too much time on my hands I figured out how to roll crimp on the Mec . Everything had to be adjusted just right. I used a smooth start crimp that just barely started the shell inwards enough for the plunger in the final crimp station to catch it and push the extra down. The old Lee handloader would fold or roll crimp so I figured a Mec could also do it.
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Paul Harm
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