More data:

The 395g Cast Performance bullet will start to destabilized at about 100 yards when started out at 1050 fps.

Other very good bullet choices are the 300g jacketed for big game:

The .451, 300, Sierra JSP FN – is a very tough bullet that does not expand much even when pushed hard. Most shots at game will be thru & thru.

The Speer .451 Diameter, 300 Grain Jacketed Soft Point – will start to expand at 800 fps and still have thru & thru’s on game.

Both are hard to find currently.

Either bullet can be loaded to an OAL of 1.645” with 16g of BluDot. Slower powders also work.