[ARCHIVED THREAD] - H870 Powder

Posted: 2/28/2009 5:02:10 PM EDT

I inherited a bunch of reloading supplies and this powder was among the stuff. I cant find H870 listed in the Hodgdon catalog. Anyone know what this powders characteristics are? The guy I got the stuff from reloaded everything from .22-250, .270, .338, 7mm RM, .45-70, shotgun

thanks

Posted: 2/28/2009 6:00:25 PM EDT

[#1]

H-870 is a slow rifle powder used for max loads in cartridges like the 300 Weatherby magnum.

For example the starting load for a 180 gr bullet is 91 grs of H-870.

Posted: 3/1/2009 8:56:27 AM EDT

[#2]

would it be comparable to IMR 7828? I may be able to use if I can reload 7mmRM with it but since it doesnt appear in any current reloading manuals I need a little guidance.

Posted: 3/1/2009 11:02:21 AM EDT

[#3]

There seems to be a lot of that H870 coming around lately. It is pretty much useless for all but the humongous cases. 300 Weatherby being the smallest. Find a 50 BMG shooter and unload it.

Posted: 3/1/2009 5:45:17 PM EDT

[#4]

Quoted:
would it be comparable to IMR 7828? I may be able to use if I can reload 7mmRM with it but since it doesn't appear in any current reloading manuals I need a little guidance.

I have no experience with either H-870 or IMR-7828.

I just looked in a reloading manual for a general answer.

From Lyman # 49 page 69,

"H-870 This is a very slow burning speed powder with limited practicable applications. It is used in very large capacity cases with heavy weight bullets."

No loads for H-870 in 7mm RM in Lyman # 49.

Not until the case capacity get to the 7mm STW do loads for H-870 appear.

[ARCHIVED THREAD] - H870 Powder

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[ARCHIVED THREAD] - H870 Powder

[ARCHIVED THREAD] - H870 Powder