BCB
It is not close by, but I will check it tomorrow.

The only reason I know is I shot some 1 for 1 across the chronograph when I got it (44 Mag, 357 Mag and Max). It is NOT recently purchased powder and I think most of the faster lots are from the last few years. I would guess I have had it at least 6-8 years. I have (had) 24 pounds so I am glad I like it. 2 jugs of mine came from Hi-Tech as I remember it but all from the same time period. Think my first jug came from Jeff.

Book data for H110 load in the 45-70 has velocity of 1500, and I average 1567 fps. It has shot so well for me I have no intention of looking for anything else unless I run out of that particular bullet and I have 750 of them (buncha shooting in a 45-70 Contender).
My 680 matched AA1680 also.

TCLouis,
The lot number on my keg of WC-820 is 47320 and it absolutely compares to AA#9. As a matter of fact, several years ago I purchased a keg of AA#9S ("S" stands for surplus) and I think this lot of WC-820 is the same dang powder! I really didn't want 16 pounds of AA#9 but that is what I think I have! What is the lot number on your WC-820?...BCB

Don't know about the Mag, but Hornady's warning about loads in the Max in hot weather using H-110 sure do bear out with my batch of WC820. My batch of WC820 compares 100% with H110.
Let it cool down and they are perfectly good loads. I gues the results could be the same with the Mag also. Does NOT happen with the 44 or 45-70!