Should add that the FL Redding dies I'm using work great for forming 17 Hornet from 22 Hornet cases. I trim the 22 hornet cases to 1.350", lube with Imperial sizing wax, one pass through the seater die with the stem removed, then one pass through the sizing die.
After sizing I anneal then fireform. I've seen a very low loss rate using these dies to form with. Can't say for sure about the other brands but the Reddings work great for this!
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