WC820n loads?

[bradh]

For years I have been loading 357 Mag 158gr LSWC with 13.5 grains of either
H110 or W296 and loading 44 Mag 240gr LSWC with 21.5 garins. Do you think
these charge weights will be OK going to WC820n powder?

[Bodydoc447]

No. Use AA#9 data and work UP from the starting loads.

Doc

[454PB]

I agree with Bodydoc447. My WC820 loads are around 10% reduced from the H-110 loads I use in my .44 magnums and .454 Casulls.

I've read that there are several different lot/burning rates for WC820, so each user has to determine that first.

[David R]

Its not a 357, but 23 grains of 2400 in the 44 magnum produces 1379 fps
23 grains of My lot of WC820 produces 1386 fps.

David

[bradh]

Accurate #9 says starting loads = 12.2gr in 357 Mag and 19.5gr in 44 Mag.
I shall start there and Thank You for your replies!