The 158 gr 358156 gas checked bullet was Skeeter Skelton's favorite. The 168-170 gr 358429 is the traditional Keith bullet without a gas check. It only has one deep grease groove and a long nose. Properly sized to the bore, they don't lead, even at 1700+ fps. .358" or .359" should be about right, or I should say, they shoot good in my barrel without leading.
I have a 5# can of SR 4756 that I use a lot or a 4# can of 2400. Both are good all round handgun powders that you don't have to worry about reducing the loads on, like H110/W296.