looking for load data for wc 820 lot na3178

[12slugger]

Hello, I am looking for load data for wc 820 lot 47320 to use in 357 mag, 44 mag, and 45 colt. Any info will be appreciated. Thank You

[BCB]

If I am reading your post correctly, I am seeing a different lot # shown in the subject line than in your actual post…

Regardless, I am using that same lot # 47320 in all the cartridges you mention…

I have found it to be right with AA-9. Sometimes a bit faster, sometimes a bit slower depending on cartridge. But only by a few feet per second either way. I have shot a give charge of both powders side by side and the chrony doesn’t vary by much…

I used starting loads for AA-9 and went from there…

There is one guy on this site that has posted pretty much info on the 3 (?) burn rates of WC-820. Maybe he will chirp in on it…

Good-luck…BCB

[MT Gianni]

I used AA 9 start loads and worked to max loads without pressure signs. I don't recall the lot number but it is pull down from around 2002.

[Lloyd Smale]

I have the same lot and like others have used aa9 data. I believe its the same powder accurate arms bought in bulk and sells as #9