A few of us here have worked with .218Bee Ruger #1's using Lil'Gun powder and using a Lee Crimp die.
This die reduced my standard deviations to the low teens - as in 12 to 14, instead of 30-40.
Start with Hodgdon's data. 40gr. bullets were very accurate, sub 1/2" in my rifle, but 50's and 55's also shot under in inch.
The WW .218Bee brass is VERY strong brass.
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Daryl
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