I cast that same bullet design in .358 for my 357 Ruger BlackHawk and Henry Big Boy. It's a Lyman steel mold, its heavy but works great. The bullets weigh in at 150 grains.
They are the most accurate bullets I've ever used.
I load, 9mm Luger, 38 and 40 S&W, 38 Special, 357Magnum, 45ACP, 45 Colt, 223, 300 AAC, 243 and 30-06