WC 867 Info
Be very careful on the initial loads with this powder. The instructions say its burn rate is near AA8700, this is not what we have found. The burn rate is slightly slower than H1000, loads using the AA8700 were way over pressured. I tried the initial load of 111gr in a 30-378 Wby, cronoed at 3480 with 200gr NP, took 2 of us to get the bolt open. Loaded the next batch back at 99gr and got them out at 2970, good starting point. Next time out I will work the loads up and try to get to 3200 without any pressure issues.