wm870 powder

[TAWS]

I finally picked up a little load data for my new 6.5 STW and it involves 86 Grs of wm870? I have some H 870 but not sure if that is the same as what was refered to as wm??? Does anyone know? The wm 870 does not show on my current powder burn rate chart. I really wanted to use some Re 25 but really not sure about a starting point for that slow a powder with a 140 grain Nosler Accubond.

 

[Kennibear]

To my knowledge the 870 powder has been and is surplus and/or recovered powder. US 869 is Hodgdon's new manufactured equivalent. But the burn rate of any 870 can vary. But if you have a good supply of it it would be worth developing a load. If you only have a pound it is good for foulers only, not enough to develop a load.

KB

 

[TAWS]

So they are the same? WM 870 and H-870?