I would guess you're right Mike, the hollow base wadcutter is probably fully in the 38sp case. Not that it is a benchrest rifle, but the wadcutter is probably also long for caliber.
mbatten, if a good heeled bullet can be figured out, you may only have to trim your brass to the point it reliably chambers? Because it's low pressure and assuming the brass drops out of the chamber, I would try get a good ID measurement of the fired brass mouth, and specify a heel diameter to friction fit. Then, you might just finger, not press seat the bullets. As Mike mentioned, you can tumble lube particularly if the HB wadcutters are working out ok, without sizing. Anyway, great looking little rifle.
