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Unread 12-20-2017, 09:47 AM   #5
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Paul Harm
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In old reloading manuals that had data for fiber wads, they recommended a 10% decrease of powder if loading " the new " plastic wads. If you're still using the SP-10 wad I'd leave everything where it is - 19grs/Red Dot. The hull itself isn't going to make much difference. It's the plastic wad that seals better making the difference. When loading my 12ga with fiber wads I usually go up 10% with the powder charge. There are some who only reload published loads, and some of us that kind of go by the seat of our pants - within limits. It's really up to you - good luck.
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