I've got lots of Cheddite primers. It the hulls are indeed Cheddites they should fit perfectly. If not, I may scrap the idea rather than buy Rio or NS primers.

As far as the resizing goes I will use my Mec Supersizer to resize the long heads. I've gotten to where I do that on any hulls with bases higher than a low base target load hull, including .410s.

Thanks for the info, SRH

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