Can't comment on the 338 but for the 243 to 7mm08. Lighter bullets in the same size case (308) usually require a slower burning powder. It's all about the bullet weight to case capacity ratio.
Can't comment on the 338 but for the 243 to 7mm08. Lighter bullets in the same size case (308) usually require a slower burning powder. It's all about the bullet weight to case capacity ratio.
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