Sensitivity questions of IMR 4895

[CoCaDoRi]

I have a load for the 308 with IMR 4895.. it shoots light out, I mean lights out, with ES in the low low single digits.

However, I am a RL and Hodgdon fan and have little experience with IMR stuff. I've heard it is very temp sensitive.

Looking for feedback as my temp swings can be... 40* in a given day.

 

[Jedi]

Re: Sensitivity questions of IMR 4895

Bro
Myself N WIl shot HOT IMR LOADS thru several TX summers zero issues, ya just gotta be smart about it.

 

[BOLTRIPPER]

Re: Sensitivity questions of IMR 4895

it has been considered that varget is the least temp sensitive....

 

[CoCaDoRi]

Re: Sensitivity questions of IMR 4895

I hear ya, but I don't get the low low es with varget. H 4895 gives some great results, but again...not the low es like IMR.

Past 400 my vertical is near nada.

 

[rijndael]

Re: Sensitivity questions of IMR 4895

In VA, we also have 40F temp swings in the summer days.

I consider IMR-4895 to be fairly temp sensitive. Not as much as RamShot TAC, but it's still noticeable. I have some data that shows > 1 fps / degree.

I am quite pleased with the lot to lot consistency, but I still prefer H4895. It does much better with the temp swings.

 

[BOLTRIPPER]

Re: Sensitivity questions of IMR 4895

guys....i don't get low ES w/varget....but i do get consistency out long

 

[CoCaDoRi]

Re: Sensitivity questions of IMR 4895

balkpark es?

ballpark vertical at distance...

asking cause I'm not real happy with RL at this point. I can't find a load to get es to stay low where I like it.

 

[sobrbiker883]

Re: Sensitivity questions of IMR 4895

I prefer IMR4895's lot to lot consistency to Varget's.

I shot XTC service rifle and the bifference between my summer zero and my winter zero was 1-1.5 moa with 4895. That's 223 at 500yds in Phx, AZ (winter mornings:40's, summer mornings:100's).

I don't run the edge of the envelope on the pressure end in my 308, 7-08 or 223, so I have had zero problems with IMR4895.

 

[JRB]

Re: Sensitivity questions of IMR 4895

Weda,I have used IMR4895 for service rifle(M1-a)for years form Georgia to Camp Perry with no problems. I have no experience with this powder in a bolt gun and the load that I use is not a max load.

 

[CoCaDoRi]

Re: Sensitivity questions of IMR 4895

This is definitely encouraging news...

Now if I could only find about 5lbs of IMR 4895

 

[former naval person]

Re: Sensitivity questions of IMR 4895

Pat's Reloading had a bunch of new surplus that shoots great in my guns. JMHO