A .28 cal. flat nose might help some for a hunting bullet.

Some guys like to anneal gas checks before resizing them to reduce springing. I've done a whack of mine. Easy enough, heat a quantity of them red hot using a torch or some sort, then dump the container of them into water.

The bullet shape above is the standard used in the buffalo ctgs. that worked so well on US game. Of course, velocities were lower and the bullets were very soft, but they did penetrate - times killing (or wounding) 2 buffalo per shot when they were close packed in herds and milling.

David's bullet appears to be almost identical in shape (GC, though) to the Lyman #457125 bullet, the original 500gr. grooved military bullet that worked so well for long range shooting as well as for hunting. It's design has proven itself over and over in competition on game, then and still today. It is my favourite mould for my Sharps.

It would be better for hunting if flat nosed, but works fine the way it is - always has.