CFE 223 in a 308 AR??

[Bigdad]

Hodgdon Load data lists CFE 223 as giving the highest velocity for 165-175 gr bullets in the 308 Win.  I bought some CFE 223 to use in my 223 and 308 Win bolt actions.  Neither liked it very well,  pressure spiked before I could reach the velocity Hodgdon claims and accuracy wasn't as good as Varget. 

Does anyone have any experience with this power in their 308 AR? 

Any recommendations on loads? 

Does it reduce copper fouling as claimed?