Unless you're lucky any bullet you get will probably have to be sized with a die to your groove depth, ideally .001 oversize. Moose makes a heeled .540 mould for the Gallagher which will probably cast a few thousands over, depending on the lead alloy. It's had mixed reviews, and right now Moose's operation is in flux. I would look at Accurate Moulds 53-375S mould which casts a heeled, short bullet. They will tweek the dimensions to suit your barrel and cases. They do excellent work IMHO.
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