H4895 vs. imr 4895

[hillbillydelux]

What's the difference? I couldn't get any imr 4895 but there was a bunch of h4895 so I bought it. I figure it can't be much different can it?

 

[varmint slayer]

They are pretty close to the same on the burn rate chart with H being a little faster but the main difference is that H is an "extreme" powder so it isn't nearly if at all temp sensitive. You will want to develop a new load if you are changing from one to the other.

 

[FLIGHT762]

H-4895 has shorter kernels and will measure though a powder hopper a little better than IMR 4895. As vs pointed out, H-4895 is one of Hodgdon's "Extreme" powders which are less temperature sensitive than the IMR counterparts. If I have a choice, I will always choose a powder that has less temperature sensitivity over one that does not.

 

[damoncali]

Close, but not the same. Check a manual.

 

[rck]

I have found IMR to be a tinge more accurate, but not enough to agonize over in times like these.

 

[hillbillydelux]

Thx for the info guys! Gonna work up some new loads with it and try em this weekend!

 

[1lnbrdg]

H-4895 shoots the 155's better for me while the IMR-4895 shoots the 168's better. They don't seem to play well with each other though, shooting 1 behind the other, the 1st 3 or 4 shots are a bit wild then settle down.

 

[Bulletmoto]

I too just switched to hodgdons since I couldn't find any IMR. To be safe I did a little work up and found the results to be about exactly the same for me. 42.5 gr. Pushing 168's. Gives me nice groups.

 

[varmint slayer]

Scored a 8lb H4350 today from my mom & pops powder supplier. I was tickled.

That's great and all but how does that pertain to this thread lol...

 

[varmint slayer]

I also couldn't find IMR4350 and the H4350 has been slim pickins around these parts.

Have a lovely day.

Nobody was looking for 4350, it was 4895...

Don't take this personal, I'm just bustin your balls a bit lol

 

[George63]

H-4895 has shorter kernels and will measure though a powder hopper a little better than IMR 4895. As vs pointed out, H-4895 is one of Hodgdon's "Extreme" powders which are less temperature sensitive than the IMR counterparts. If I have a choice, I will always choose a powder that has less temperature sensitivity over one that does not.

IMR 4895 had the highest velocity variation with temp in a chart of 308 powders, H 4895 was not listed but IMR 4064 showed about 1/4 the variance

 

[Joe Kidd]

Nobody was looking for 4350, it was 4895...

Don't take this personal, I'm just bustin your balls a bit lol

You're correct. Guess I just had 4350 on the mind after todays find. Later

 

[NoFail]

My .308 really responded very well with 43.6 gr H4895, 168 AMAX in Winchester brass.