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32 grains/vol of fffg 777 is equivalent to 37 grains/volume fffg real black powder or Pyrodex P.
22 grains/vol of fffg 777 is equivalent to 25 grains/volume fffg real black powder or Pyrodex P.
I'd say you're at the top of the range on the steel framed gun and abusing the brass framed gun. Drop the brass frame load to 17 grains/vol fffg 777.
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