Imr 4320 for 3006 150gr ?

[06shooter]

For hunting , accuracy and cold temps.

[hooligan1]

Imr 4350 is my go to powder for any 150-165 grn bullets for 30-06. I pick a bullet and find manual with said bullet, then use some of their data to start with then tweak until satisfied for whatever endeavor your attempting.

Also read ABC's of realoading, some find that reading this manual will answer a lot of questions for yourself.

[T. O'Heir]

Only ever used 4064 and 4895 long ago. How cold is cold to you?

[jmr40]

Most powders will see 1-2 fps velocity change for each degree temperature changes. H4350 is one of the more stable powders when it comes to temperature sensitivity. It will still be effected, but the difference is just a fraction of most powders. About .5 fps or less for each degree temperature changes.

I can get a tiny bit more speed with IMR4350, but prefer H4350 for this reason. I can beat factory speeds by at least 100 fps, with either, and still be under MOA. It is my go-to powder, but I will use IMR4350 if it is not available. I've also gotten similar results with Ramshot Big Game. But it is not as good with temperature changes.

Go to Hodgdon's website to get a list of their "extreme" powders if you are concerned about temperatures. The difference between 0 and 80 degrees could mean a loss of 150 fps or more with most powders, only 30-40 fps with others.

[06shooter]

Will do , the sportsman's warehouse is always low on supplies.
I bought some h414 , this is one of the powders listed from Swifts 2nd manual.
I want to start with 150 gr. sciroccos , they group well and they are devastating on deer for a bonded bullet.

I don't have a press or dies just yet , I want to get my components together every chance I get since supplies are limited.

H414 calls for WLR primers and I bought those to. Nosler calls for them as well and I plan on using their cases.
Swift calls for Federal 210LR and cases.

I really don't know about the ignition differences , so I could use some help on that .
I understand that most manuals call for imr, / h 4350 or 4064 for 3006 , but I'm sure It'll be trial and error at the intro for any combo.
I'll probably get one of the 4350s when it comes available or imr 4064.
I just want to be prepared.

I want to thank everyone for their help while I'm on this pursuit , I have learned a lot so far !

[jimbob86]

Speer's 13 reloading manual called for CCI magnum rifle primers with their H414 .270WIN data.... I had a H414 load already worked up ..... so I worked up a load with the magnum primers, and compared the two loads side by side, everything the same but the primers.

The magnum primered loads were more consistant across the board, and lost significantly less velocity at cold temps (20F, IIRC)....

[06shooter]

Yeah, speer#14 calls for cci 250 mag. with h 414 start charge 54.0 for 2603 vel. for a 22 " barrel 3006 150 gr.

Swift / start charge 52.5 for 2736 vel.
Fed. 210 Primer 24 " barrel.

So how would a WLR primer fit in ?

Experiment?

On the bottle of Hodgdon it says
55.5. 180 gr. sie btsp win case. Win LR Primer at 2743 vel.

[06shooter]

So mag primers are to be used for cold temps. with h 414 even though the swift manual doesn't call for it with their 150 gr scirocco ?

Do mag primers cause more pressure ?

[jimbob86]

They might. As usual, start at the "start load", and work up.

You could work up both loads, as I did, and compare them side by side, in your own rifle ..... it is interesting stuff! If you have access to a chronograph, it is really interesting!

[William T. Watts]

A good rule of thumb if it is double base H414 certainly is a double base powder a magnum primer is appropriate especially in colder temps. The only double base powder I have is W231 for my 45ACP, other than this pistol powder I avoid the other double base powders like they are the plague. They burn dirty and leave more residue in the bore.. William

[06shooter]

Forgive my ignorance, so I take it that in the cold , the mag primer will burn all the powder , but it will still leave the bore dirty ?

[Bart B.]

IMR4895 was 'the' powder for 150 grain bullets used in the '06 at short ranges in competition; both maximum loads and reduced ones about 3 grains light. While IMR powders 4320 or 4350 will shoot them out faster with the same pressure, so loaded was not as accurate.

Rarely does any cartridge produce best accuracy with any bullet shot as fast as possible. It's akin to punching a cue ball with the stick rammed into it with great gusto and expecting it to roll to exactly where you want it to go.

[06shooter]

I'm not thinking about speed.
Just trying to understand this primer thing.
Cold temps., dirty bore , full ignition etc.
Some manuals call for mags with h 414 with 150 gr. pills and some don't.


Maybe I'm not asking the right questions!

Why would speer use a mag primer for h 414 150 gr. 3006 with a 22" barrel while swift and nosler don't call for mags for 24" barrels

[hartcreek]

Some powders require magnum primers for proper ignition once you get above a certain powder weight H380 and H414 are two of them.

Stoney 4320 is also a standard powder for 30-06.... 50.5-54.5 grains with a 130 grain bullet.

[Old Stony]

While IMR 4320 will go bang for you, I don't think youu will be doing yourself any favors using it.
For many years the standards for the caliber were IMR4831,4350,4064 and 4895. I always preferred the 4831, as I like to fill the case and leave as little air space as possible. There are lots more options, but these will pretty much do everything you will need, other than severely reduced loads.

[TimSr]

"Cold temps" can mean different things to different people. I see the OP is in Mississippi. Are we talking Alaskan caribou hunt, or are we talking "it might get cold enough to snow here next week"?

[hooligan1]

I use my Imr 4350 for hunting, my loads are tested all through the year at the range, during deer season weather here in northern Missouri can be warm to downright cold as hell, I never ever noticed and countless whitetails never noticed any loss in accuracy or velocity...I've seen differences at the range with warmer temps but still almost undiscernable .

[06shooter]

Here in N. Mississippi it got down to 18* F. this year , that I remember.
Speer has a start charge less than Swift for the H 414 but speer calls for a mag primer , Swift don't.

When imr 4064 and Imr / H 4350 become available , I'll get me some.
H 414 was the top listed in the swift manual so I bought some.

[06shooter]

Swift is .5 more than speer at the start charge.

[Bart B.]

Some "magnum" primers have smaller flame output than standard ones:

http://riflemansjournal.blogspot.com...mer-study.html

Are "magnum" labeled primers really a marketing scheme?

[44 AMP]

18F is cold. No question. But not as cold as some places I have lived. Live in a place where, from mid Dec to early Fed the warmest it got was -17F (17 below zero) and you really know "cold".

IMR powders are generally less affected by the cold than ball powders. But there is always an effect. Sometimes, the loss of velocity is more a measurable thing than a practical thing.

A 50 or even 100fps drop due to the cold isn't going to make you miss a deer, if your aim is good. A prairie dog at 300yds might be a different matter.

I have used IMR 3031, 4064, 4320, and 4895, and each gives slightly different top end results with the same bullet. Choose the one (or any other powder) that gives you the best accuracy, and don't sweat a handful of fps difference.

[06shooter]

Thanks 44amp , I found some imr 4064 and h414.

[GeauxTide]

52gr of 4064, in multiple rifles, puts 150 Hornady, Nosler, Speer, or Sierra into 5/8" or less. A fantastic load, posting over 2900fps.

[Unclenick]

Since Hodgdon distributes all these powders, if you simply go over to Hodgdon's site and select 30-06 and 150 grain bullets, then check all the powders mentioned, you get a comparison. IMR4320 does very well and would be an excellent choice for the 150. As soon as you go up to 165 grains, though, it starts getting beat. I wouldn't hesitate to use it.

As far as cold temperature goes, its increasingly common to recommend developing your loads with magnum primers. They sometimes don't give you quite as tight velocity spread at summer temperatures, but they don't let performance drop off as fast when it starts to get cold, either. Lots of folks have switched to magnum primers only, due to exactly this factor.