AR Comp loads running very slow

[Diesel Pro]

Sorry for the 223 data again, but here is a comparison from today. I chose 4 powders that I have on hand that all fall in the same general burn rate with RL 15 being a few steps slower:

25.6gr comparison 3rds per load 55 SBK 2.250" COAL

XBR 3006 19.1sd QL estimates 2957
RE-15 2785 28.7sd QL estimates 2796
TAC 2947 3.1sd QL estimates 2709
Comp 2755 35.2sd QL estimates 3101

Same charge 60gr Nosler
8208 2957 sd 15.7 QL est 2932

Either QL has an issue estimating Comp or I have a bottle that is "off"

Tac is the big overachieving surprise here.