I have an 1873 Springfield rifle with a pitted bore and chamber. I slugged the bore but the 3 groove rifling is hard to measure. Beagling a Lyman 457125 mould and pouring soft lead, the bullets came about .460 and seemed to shoot better. I shoot BP only. Questions are: What tin/lead alloy works best? What are you doing for fouling control? I made a blow tube but would prefer to wipe. I also have the .457193 mould that I would prefer to shoot for recoil control. I shoot BPCR Silhouette so have all of the stuff for that. Thanks.