I'll not recommend anything one way or another...BUT...

I mixed, thoroughly, 4 one pound bottles of Varget about 2-3 months ago. I am getting good consistent results. I mixed a portion of each; kept adding and mixing into one large, clean plastic container. I mixed THOROUGHLY..THEN, when all were in the one large container, I mixed THOROUGHLY AGAIN. Then dumped back into the four one pound containers and started the process all over again. Once again when all were into the large container...you get the idea. Took me all afternoon, on and off. I've already loaded and shot about 2/3 of a pound. No problems, consistent groupings over various loads for .308 Win.

Just my experience in doing this. In the future I'll do my best to get 8 pound jugs but honestly, I will not be afraid to do what I've described, again, if necessary.

Brian