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kcrow: just a suggestion if you use 4-10 brass of modern manufacture check your flange thickness if it is thin it will cause a head space problem. i ran into this problem with my dr. of 1894 manufacture. older brass of the same maker was 6 th. thinner than the older causing misfires and a headspace problem came close to knocking it off face. just something to be aware of. regards

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Good heads up. I just ordered 410 brass--I'll check the rim thickness before proceeding further. Does anyone know if a .444 marlin trimmer will work with 410 brass? The length I need per the cerro cast is 2.22, and a 444 fits the bill nicely.

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