I'm useing Speer Gold Dots. 250(?) grain for the 50 cals. And 300gr. 50 cals for the 54 cal.
Willians Gun Sight, Davison Michigan, just off I 69 exit 143at Irish road.
1-800-530-9028

They also carry Noslers but you might want to call ahead to see if they have in stock what you want. Although other bullet prices have gone up Noslers are not in big demand do to the oncehuge price difference between other brands.
Pepole found other brands cheaper and work just as well.

Al