Bought 300 primed 300 blkout cases. These were conversion from 5.56 cases formed and trimmed to correct length. I check the in my lyman case checker. They were not seating to the depth I like but were close. I loaded 4 rounds and that's when the trouble started. Seems the necks are a bit thick and chambering required a bit of extra force because extraction was not an option. I will be turning the necks as soon as my piolt die arrives.
3 years ago
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