Powder

[Eastman]

Hi Guys,
Could anyone tell me if there is a difference between the I M R 4895 powder, and the H 4895?? I am loading for a 270 WSM, and was given a very accurate load for it in H 4895, but only have IMR 4895. I thought they were exactly the same, but a friend of mine thinks there is a difference!!??
Sounds like a question from a Newbie...and it is!! Still learning about all these things.
Any advice would be greatly appreciated.
Eastman.
PS Sorry if this is in the wrong forum.

 

[ben hunchak]

The diff. is small but, for safety sake treat it as a totally diff. powder, use loads from the manual for IMR 4895, the diff. is probably less than lot to lot variation of the same powder.

 

[prosper]

The Hodgdon version has their proprietary treatment to make it less temperature sensitive. Which means the differences between the two will be greater at high ambient temperatures and low ones.

 

[Scott_N]

4895 has too fast of a burn rate for the 270 WSM to give you good performance. You want to look at something way slower burning, like RL 19, RL 22, IMH / H 4350 or 4831.

 

[john-brennan]

I use 62gr of H4350 with a 130gr partition for 3300fps and great accuracy, if you use a heavier bullet try H4831.