Winchester Compressed vs Polyformed Hulls

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  • tallen702

    Ultimate Member
    MDS Supporter
    Sep 3, 2012
    5,102
    In the boonies of MoCo
    So, upon reading separate sets of data, it appears that there are two takes on data for Winchester hulls. I've got both the single-piece compression and two-piece polyformed hulls to reload. Older books suggest that separate load data is used for the two types of hulls, but newer data (specifically the 5th edition Lyman manual) suggest that you can use the same data regardless of which of the two hull types you are loading.

    Anyone have and experience with this? Should I go with the Lyman data, or stick with the older data?
     

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