Thank you, for all of this, and a chance to try hollow base. It is sincerely appreciated.Ok. So the ones I sent had been sized to .459.
They should drop out of the mold at .460. You might try shooting some without sizing and see if that helps the group.
Also, play with the powder charge. A little more or less can make a big difference. And the ones I sent were cast with wheel weights and had a hardness od around 12 -14. Softer lead might help too....
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