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Do you crimp your .223 cases?

I'm assuming we're still talking autoloaders? Sometimes I do, others I don't.

Bolt or single shot, almost never. Properly sized bottleneck rifles cartridges are too easily tuned to the individual chamber they're shot from to be introducing a crimp into the mix.

If loading a generic load for multiple firearms in the same caliber, then a good crimp may even help accuracy by somewhat uniforming start pressures.

I think most accuracy oriented shooters,(myself) tend to load for one rifle at a time and don't much cotton to crimps of any kind on their precision work.
 
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