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The 6×45mm is a rimless, bottlenecked cartridge based on the .223 Remington or 5.56 NATO cartridge necked up to .243 (6mm). The cartridge is also known as the 6mm-223 Remington or 6mm/223.

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    6X45 load data

    Hello, Wondering if anyone has any load data they would like to share for loading 6X45 or 6/.223. (all my loading books are too old) I am building a bolt gun right now that should be done this week, i will start with the barrel at 24" and plan on starting with 85g Sierra's. Any personal...
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