It would appear your throats may be a tad under 0.430, which is fine. The 0.430 sized bullet will be sized down to your throat diameter upon firing causing a small rise in pressure, still no big deal. The bullet hardness is such that it will probably expand & seal in the barrel just fine and there should be no leading issues. Seems to me everything is good to go, so go out and shoot some good groups with your revolver.
Since the bullets aren’t gas checked or around 22 BHN I’d keep the velocity below 1,100fps and below 1,000fps would probably even be better to prevent leading. Put it this way, when you see leading – back off the throttle.
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