IMR 4064

[eric32]

It does not meter well. I have chargemaster and I have to watch the over charges. I used to get an under or over in about 1 of 20. With 4064 its been 1 in 10. But I like it. It shoots well. I feel like it has a little more recoil than imr 4895 but it could be me. My gun likes it shooting 175 smk. I also found 2 charges that group well. One with 42.5 and one one with 44grs. Now I have to play with exact weights to get it better.

Try this for your chargemaster i did it with IMR 4064 I never get a overthrow or underthrow of a charge.

http://forum.accurateshooter.com/index.php?topic=3779862.0

 

[amlevin]

It does not meter well. I have chargemaster and I have to watch the over charges. I used to get an under or over in about 1 of 20. With 4064 its been 1 in 10.

Make sure that your Chargemaster is level, front to rear. Don't use the screw feet to level, they're only there to hold the unit together. I have mine on a piece of 1/2" X 6" X 24" steel plate (that I scrounged). I have shimmed the plate so the CM is level and I rarely have an over/under charge dropped with IMR-4064 or any other "presto-log" powder.

Another thing I found helps. Before pouring powder into the reservoir give the container a shake to break up any possible clumps clinging together. Only add what you plan on using in a session.

Regular static control with dryer sheets also is a good move with any electronic scale/dispenser.

 

[JP351]

I recently swapped over from RE15 to IMR 4064 for .308/175SMK. I believe it's the powder used in FGMM.

Personally, I haven't experienced any issue with the chargemaster throwing inconsistent loads with the powder.

 

[gsg5pk]

I love this powder due less temperature sensitive than RE15.



Varget was better but hard to find from market.

 

[amlevin]

I love this powder due less temperature sensitive than RE15.

Sure would be nice if someone would publish a "Temperature Sensitivity Chart".

Something that shows just how much speed change there is per unit of temperature change.

All we seem to have today is a lot of anecdotal "This powder is more temperature sensitive than that one".

Last data I saw for some foreign made ammo showed that over a 100 degree spread in temp the speeds varied around 15 fps. The powder they used was, according to some accounts here on US based forums, was "very temperature sensitive".

I'd sure be interested in seeing some hard data. Most of the powders I use work just fine in all the temps I encounter. But then again, I don't shoot when it's 120 degrees or 30 below zero. You may say that my "butt" is more "temperature sensitive" than all the powders out there. 8)

 

[yat3b35]

My choice of powder for the .308 Win is Imr 3031. It's often overlooked ,but is excellent for most bullet weights.

 

[eric32]

Anyone figure out what primer is best with 4064?

 

[amlevin]

Anyone figure out what primer is best with 4064?

I use both CCI BR-2's and Fed 210M with great results. Even the Tula Primers work good. If pushing heavier loads use the Tula's. They don't crater as quickly or end up looking like the metal was poured into the primer pocket when fired. I have achieved single digit ES, SD, numbers with the Tula's. Shooting off my BR-2s now and when gone the Fed's and Tula's will be my primers of choice in .308 with IMR 4064.

 

[eric32]

Thanks alot for the response, I have some BR-2s in stock for me right now and WIN LR's. But i never had good luck with the WIN LR. Ill try agian with seating depth changes, since i have a barrel tuner. My goal is to get a single digit ES load and use the barrel tuner for accuracy.

 

[bigedp51]

I love this powder due less temperature sensitive than RE15.

Sure would be nice if someone would publish a "Temperature Sensitivity Chart".

Something that shows just how much speed change there is per unit of temperature change.

All we seem to have today is a lot of anecdotal "This powder is more temperature sensitive than that one".

Last data I saw for some foreign made ammo showed that over a 100 degree spread in temp the speeds varied around 15 fps. The powder they used was, according to some accounts here on US based forums, was "very temperature sensitive".

I'd sure be interested in seeing some hard data. Most of the powders I use work just fine in all the temps I encounter. But then again, I don't shoot when it's 120 degrees or 30 below zero. You may say that my "butt" is more "temperature sensitive" than all the powders out there. 8)

How about this and its not anecdotal, it is a fact.

The military stopped using RL15 in its long range 7.62 sniper ammunition because of its sensitivity to temperature change in Iraq and Afghanistan. They now load this ammunition with IMR4064 and are getting better results. (and a single base powder with less deterrent coatings to control the burn rate)

"Cartridge, Caliber 7.62mm Special Ball, Long Range, MK 316 MOD 0 (United States): A 175-grain round specifically designed for long-range sniping consisting of Sierra MatchKing Hollow Point Boat Tail projectiles, Federal Cartridge Company match cartridge cases and Gold Medal Match primers. The Propellant has been verified as IMR 4064 (per NSN 1305-01-567-6944 and Federal Cartridge Company Contract/Order Number N0016408DJN28 and has a charge weight per the specs of 41.745-grain."

Federal Gold Metal Match ammunition

 

[A_Gamehog]

Midsouth has 1 lb and 8 lb in stock.

https://www.midsouthshooterssupply.com/

 

[amlevin]

Midsouth has 1 lb and 8 lb in stock.

https://www.midsouthshooterssupply.com/

8# jugs gone already.

 

[stool]

THE REASON is not quite true.
with the 118lr round which was developed for bolt guns , it used in hot temps required it be loaded lighter in gas guns..twice they lowered the load.
in the end they were at 2550 fps(same as the m852 168 sie match load) or so with the 175 sie . the bolt guns suffered from reduce consistancy with these loads.
so if you go read the developement of the new load , it was about CONSISTANCY over velocity. the slow load of 4064 shot very consistant, but they gave up the velocity of the original (bolt gun) load of the 118lr.

having said all that, yes imr4064 shoots very well in 30 cals with a bunch of bullets.

 

[boltgunluvr]

Freakin great in 308 and 223 AND plenty of other cartridges. My Rem 700 Varmint will shoot dime size groups @100 yds with this powder only using 53-55gr Sierras. Varget does ok, but nothing like this.

 

[IllKeepMine]

I love this powder with 168 SMK in .308. I prefer Varget for 175 SMK but that's just how the load testing worked out for my rig.

 

[Area Man]

I picked up 2 pounds of IMR 4064 today. My M700 VLS 243 loves it and I'm going to start feeding it to my new 6BR Savage.

 

[Joe Maisto]

My choice of powder for the .308 Win is Imr 3031. It's often overlooked ,but is excellent for most bullet weights.

it's true that 3031 is overlooked . I used it in my .35 Whelen as well. Hard to throw accurately though, but the deer didn't know the differance.

 

[Barlow]

I heard or read somewhere that Varget is basically shortcut 4064. Anybody hear the same? Barlow

 

[stool]

no...

I heard or read somewhere that Varget is basically shortcut 4064. Anybody hear the same? Barlow

 

[richiek]

I use IMR4064 for all my rifle reloading, 243,270,30-30,32spcl,308, and 30-06. I'm sure there are better powders for some of these calibers. But I like to keep things simple, and the loads I have are accurate enough for me.