I'd still cut it back more Ben, so about 2/3 of the remaining pin was gone, and then file it to a point. It would give you a nice dimple point. I've shot a bunch of beaver carcass and road killed deer testing HP's and dimple points. When the noses blow off HP's the bullet tracks in unforeseen directions because they don't fragment evenly. The frontal shape of the remaining bullet, guides the bullets path. If the bottom blows off it tracks up or opposite direction the fragment goes due to the hydraulic effect of tissue. Also consider the physical density of the hide, muscle, lung as it enters. I'm picturing a broadside shot with a through and through. The bullet hits hair first, hide next, muscle next, lung or intestines, then the opposite leaving. If you watched Full Lead Taco's video it shows a pretty good example of the bullets path and direction of the bullet path after fragmentation. My tests show pretty dramatic difference in deformation from muscle, hide and internal organs, or the effect they have on bullets.