The 200-grain RN must have been at least reasonably popular at one point, because Hensley and Gibbs offered a mould for that projectile, specifically designed for the 38-200 load. I happen to have one of the moulds in ten cavity, and although the number of the mould escapes me, it drops a plain based round nosed bullet with two grease grooves, and like all H&Gs, if I do my part, all ten bullets drop at significantly less than one grain of difference in weight.