I have found a good alternative to Varget it is a Hogdon CFE223, I have tried it in several calibers all with great success, and have averaged over 100 FPS more than I have using Varget just like when I switched from H4350 to RL17, and it meters like sand to boot, and on the same note it seems to burn cooler also, here are some of the calibers I have tried it in with and have had good results.

223
22-250
220 Swift
243
260 AI
308
6mm-06 AI
25-06
270
30-06

Tanks Dean