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Unread 04-03-2018, 08:23 AM   #4
Paul Harm
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You're gonna loose a little pressure because RST hulls are straight walled and the wads you're using are for tapered wall shells. The 3/4oz load calls for 15.5 to 17.3 in the Fed hull - also straight walled. It's been claimed in SC's magazines that 3/4oz loads have a hot core with tighter patterns unless velocity is up around 1300fps. So your light loads might just have been a smaller pattern. If it were me loading 7/8oz with the 0178 wad and RD I'd be loading around 18grs- JMHO.
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