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Tight primer pockets
I loaded up some 222 cases the other day, and found the primer pockets so tight I actually checked that they weren't 223 crimped in.
These were FC cases. Anybody else found them tight?
I over came it by using the inside neck chamfering tool to ease the primer start, but they were still tight compared to a Norma or PMC case that I usually use.
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Lube the primer pocket lightly using redding sizing wax on a cotton bud, makes a huge difference
Works on brand new Norma brass as well as it often has very tight primer pockets
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Had the same issue with 223 federal brass, I swaged mine with the military crimp removal tool. No more problems.
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Buy a primer pocket uniformer. Lots of variations between brands and high primers isn't a good thing.
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Have had he same problem with fc brass in 223 and 308, just ended up using different brass