I have not had any luck with CFE223 or Power Pro Varmint.
What I have had very good results with is H4895 under the 129/130 class of 6.5 bullets.
I have read that 8208 is a very good powder to use and H4895 mirrors 8202s performance almost exactly.
I have been informed by people who know more than I that H4895 won't perform well under lighter weight bullets. It may be correct but I haven't loaded any slugs lighter than 129gns.
What kind of velocities are you getting with the 130 grain pills?