WW680

[Tom]

JUST got a very old ~lb of it... What else is it known for?

I used the 1680 in a 357max. As near as I can tell, 1680 is pretty much the same as ww680. This might be a good place to get an idea.

Accurate 1680®

Hodgdon Powder Company

shop.hodgdon.com

 

[fiver]

all the super-mags love it.
it's also numero-uno in the 25-20.
it'll run a 300 BO at sub speeds and function your AR too.
i've used it in my 0-6 with cast bullets using 4227 data as a starter.
it'll run your 375 win. cast loads clear up to too fast if you chose that route too.

 

[sundog]

Years ago I cabbaged on to an 8 lb jug of H116 for cheap. It was peddled as a white label surplus. Didn't use it for quite some time, but it turned out to be nearly identical or possible the same as 680 / 1680. Shoulda gotten more of it at the time had I realized what it was.

 

[oscarflytyer]

it'll run your 375 win. cast loads clear up to too fast if you chose that route too.

What about cast for 38-55?

 

[Edward R Southgate]

I think 7.62x39 and .30 carbine were listed as suitable for 680.

 

[fiver]

you can slow it down of course by using less, but i'd make sure you have a decent crimp.
the powder is super fine and can get moved around by the primer pretty easily.