I used to use 444 Marlin in my Stevens 410 sxs. One chamber was large enough that fire 410 shells would not size down enough, so I used 444 Marlin and they didn't swell much and the FL marlin dies sized them right down. I had a gasket punch that cut the right size wads. I might have the dies around yet, I've made four moves since the last time I looked for them.
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