Why Nobody Loads With H4895 ?

[longlickfriends77]

[jason miller]

Idk. I've wondered the same thing and recently started playing with it.

1. About the same burn rate as AR Comp(Alliant stated that 4895 was what ARC ended up closest to, although they didn't specify between H or IMR)
2. In the temp-stable "Extreme" line
3. Small kernels fit in the Grendel better than AR Comp

I've noticed that it takes about half a grain more H4895 than AR Comp to get the same velocity in my rifle. Quickload thinks that H4895 should have a slight velocity advantage of ARC with 129's and heavier.

[longlickfriends77]

I do like AR Comp, but it is very hard to find where i live. I want a powder more temp sensitive, since the weather around hear in Louisiana has been crazy these days. I have been using CFE 223 lately.
H4895 is easy to get around me so i will do some load testing with it.

[Drillboss]

There wasn't much published data for H4895 until Sierra released their Grendel data. Alexander Arms had listed it in their original data.

I loaded some up and saw my best grouping at 27.7 gr going 2489 fps. The same day, 27.8 gr of AR-Comp clocked at 2538 fps, but I've come to think that load was probably over max. These were 123 gr SST's through a 20" barrel.

I think I saw that Klem likes the powder for the Grendel.

[Splatt]

Whats the diff between imr and h ?
I have both and dont see seperate load listings ?

[grayfox]

Whats the diff between imr and h ?
I have both and dont see seperate load listings ?

One of the older Hodgdon Annual Reload magazines had an article that talked through that question. If I can locate it I'll post up which one. I'm thinking 2012 or 2013 edition.

[NugginFutz]

While both are owned by the same company, the powders have their differences. In most cases they will be very similar but you will find that there are going to be minor variances in burn rates and temperature sensitivity. While I would not hesitate to use one in place of the other, I would work up my loads, just the same.

[StoneHendge]

Whats the diff between imr and h ?
I have both and dont see seperate load listings ?

IMR 4895 is an old school military ball powder. I found it extremely accurate in 308, but it is incredibly temperature sensitive. So much that POI would shift as the chamber heats up.

[grayfox]

Hodgdon annual reloading, 2013 issue, page 58.

The two shown in the article are both extruded powders medium length cylindrical, but have several differences.

[Mad Charlie]

All of my IMR 4895 is stick powder.

[CVCOBRA1]

Will be watching this thread because I just picked up a pound of H4895. I saw it listed in a few loading charts and checked it out on the burn rate sheet. It has to be in the ballpark somewhere.

[longlickfriends77]

So H4895 is a powder with potential to work in grendel and is stable in winter and summer conditions.
It will have velocities some where like AR Comp.

[jason miller]

So H4895 is a powder with potential to work in grendel and is stable in winter and summer conditions.
It will have velocities some where like AR Comp.

Yes.

[Klem]

I use H4895 exclusively for 120grains and above.

Why do you think it is not used?

[Splatt]

Both my 4895's are an extruded, (stick) type powders. Very small, and thin.
I just loaded 5 rounds with 120 gr ballistic tips with 27.0 grains of imr. There was enough case space to seat the 120's without crunching powder.
I am chomping at the bit to go see how my reloads are shooting.
Wind is up pretty good here.