I have hundreds of Hornet cases. Imperial, Rem-UNC, Remington, F C, Sako, S & B, a couple of different Winchester types plus some others.
I have settled on Win Super X and yes they are heavier than some of the others but haven't found the reduced powder capacity an issue. The Super X are the most consistant weight wise.
Although I've got an AMP I've not yet attempted to anneal my Hornet brass. Yours look to be classic candidates for annealing.
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