That could be true concerning the bullet choices.
However, in my two revolvers, as I don't intend to fight off any charging colonial natives or do any trench clearing with Webley in hand, I've decided that stout charges to poke holes in paper is more squeeze than I want to apply for any extra amount of juice that might result.
And the hollow base RCBS replica bullet cast from pure lead seems to obdurate just fine, with accuracy better than the couple of handfuls of WWII era ammunition I got with the revolver. Better, probably because I could experiment with powders and powder charge with the reloads while the WWII ball is what it was.
Could it get even better accuracy? Probably/possibly. Am I happy with the accuracy I'm getting? Yes.