I purchased a bunch of WC852 from GIbrass and ran tests on it.
Understand there are a number of different burning lots of WC852. Accurate Arms bought one lot, sold it as 2700. I am certain current AA2700 is newly made but you can look at the data for 2700 for guidance.
My lot of WC852 was too slow for any use in the 308. I could not get a decent velocity even with 190's.
Quote:
308 Win M70 26" Kreiger Barrel, four groove, 1:10 twist
190 gr Speer Match 50.0 grs WC852 wt'd R-P cases Fed 210S
9 Mar 97 T=70F
Ave Vel = 2328
Std Dev = 18
ES = 52
Low = 2310
High = 2362
N = 14
0.85"*0.68 5 rd group
190 gr Speer Match 51.5 grs WC852 wt'd R-P cases Fed 210S
30 April 97 T=70F
Ave Vel = 2392
Std Dev = 19
ES = 54
Low = 2361
High = 2415
N = 10
190 gr Speer Match 52.5 grs WC852 wt'd R-P cases Fed 210S
30 April 97 T=70F
Ave Vel = 2461
Std Dev = 12
ES = 41
Low = 2442
High = 2483
N = 10
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I did find my lot of WC852 worked well in the 243, 6.5 X 55, 7.5 X 55, 30-06 and 270 Win.