Kurt: this is too easy.....51 gns of Varget under a 150 gn slug gives you 2975'/sec. This load data is printed right on the label on the container of Varget powder.
One nice benefit of purchasing Hodgedons (sp?) powder is that the labels on the containers have load data that provides for some very accurate loads. Every load I have used that Hodgedons has provided has been very accurate in my rifles.
HTH. Mikey.