I have what is left of an 8lb bottle of WC820 lot #47321. It is supposed to load out right at H110 data up to a 240gr bullet in the 44Mag.
There are several rifles afield this year and last with a load of 20.3gr under a 240gr JSP/JSPHP for 1700fps. So far there have been 10-12 deer taken with this load. One friend shot one at 135 paces and it went right on through! 2 hops and the deer stopped moving!
I thought about getting some of the W297 but haven't gotten to the bottom of my WC820 yet!
Clean burning, no flash. I am going to work on a load for my 45Colt too. Even been thinking of getting a carbine in that caliber too!
Have fun and let us know how that powder works!