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Discussion Starter · #1 ·
What is the difference between the Rem Unibody plastic case fold crimp hulls & the STS plastic case fold crimp hulls?
Looking through the newest Lyman book & see these are listed separately.
Is this just old irrelevant data & are recipes interchangeable ? Google is no help on this one.
 

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Discussion Starter · #4 ·
Im working with what I have which are STS Hulls, W209. SP20 , WAA20 or Fed 20S1 wads,International, longshot, Unique & Universal Powders .
UNI = 17.5 LS /W 209 / Waa20 @ 1166 / 10600
1 oz loads <
STS = 16.5 LS /W 209 / SP20 @ 1199 / 10400

The Unibody hull doesn't list a 7/8 oz at all.
While for 7/8, the STS Hull utilizes W209s with the same wads ,International, Longshot, Unique & Universal powders with the respective FPS variations between field or target loads.
 
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