Been using it in the 44 mag and am about ready to use it in my 357. This is the cleanest burning powder I have ever used bar none. As I've stated before, I used it in brand new brass and after firing, you could still see the shine in the inside of the case!
I will caution you that there are a few different lots out there with different burning rates. Having said that, this powder runs about the same charge weights with the standard weights in the 44 mag in my experience. That is to say, it exhibits higher pressures as the weights go up say past the 265 gr mark. This powder is NOT the same as H110/296. It's pressures peak out sooner with the heavier bullet weights.
With the LBT 280 WFN GC bullet, I use 20.0 grs. with WC820 for 1390FPS avg. out of my 8" chop barrel Contender pistol. 22.5 grs. of H110 does about 1424 FPS average with the same bullet. However below that weight of bullet, charge weights tend to be comparable with each powder.
Hodgdon is now selling a powder called H108 and I've been told that it is the same as WC820 surplus. So there is some load data out there now to help. I would caution anyone to not just blindly use H110/296 data with this powder. It definately has a different pressure curve especially with the heavier bullet weights.
WC820 is a NON-canister powder meaning that it is not blended like a canister grade available on the commercial market for handloaders. Different lots can exhibit different burning rates more so than commercially available powders.
My lot is "pulldown" from loaded ammo and is the most reasonably priced of all. This is an excellent powder and a boon to us all if used properly and carefully. You probably will not get the highest possible velocities with the heavier bullet weights but it sure makes for very economical shooting.
This is an extremely fine ball powder and will give some difficulty in drum type measures. I use a dipper myself and it is extremely uniform when measured this way.
I've also seen it used in reduced velocity cast bullet loads in rifles like the Swede.
I've got 16 pounds to work through now myself. :biggrin:
(Edited by Contender at 7:52 pm on Sep. 8, 2001)