Polywad started making the disck to use in 10 gauge. I spoke with the owner and he said the 12 gauge SpredR works for the 10 gauge. I load them all the time in the 10 gauge. My loads are 1 1/4 oz from Sherman Bells data with Federal hull cut to 2 7/8", WW 209 Primer, IMR 4756 (35.5 grains) and Remington SP-10 wad.
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