new powder - IMR 4007

todbartell

todbartell

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just checking out the latest Handloader magazine and see an ad for IMR 4007, so I checked IMR's site, no word on it. Did a good search and found a bit of info. Did a search on CGN but found no posts on it...

imr4007ssc.jpg


Shawnee Mission Kansas, IMR-Legendary Powders, the innovator of super short cut technology introduces IMR 4007 SSC. You may want to get out your chronograph and see the difference this powder makes as it falls between IMR 4350 and 4064. "SSC" or Super Short Cut powder translates into charge weight consistency ergo accuracy. This important feature of 4007 SSC means the powder easily and accurately flows through the powder measure.
It's shortened grain drops smoothly into small case necks making it perfect for classic varmint cartridges like the 22-250, 220 Swift and 243 Winchester. Users of popular big game cartridges such as the 30-06, 300 Winchester Short Magnum and 7mm Winchester Short Magnum can attain top velocities typical of extruded powders, with the precision metering inherent in this new product.
Additionally, the short powder grains permit ideal load density, making top velocities achievable where a bulkier long grained propellants fall short.
Here are three classic cartridges that produce outstanding velocities with IMR 4007 SSC:

  • [*]22-250 Remington 55 grain bullet, 39 grains IMR 4007 SSC=3,786fps
    [*]220 Swift 50 grain bullet, 43 grains IMR 4007 SSC=3,922fps
    [*]30/06 150 grain bullet, 55.3 grains IMR 4007 SSC=2,972fps
Look for IMR 4007 SSC in one pound bottles and eight pound kegs at favorite IMR dealers everywhere Spring 2007. Check for complete reloading data late Winter 2007 at imrpowder.com or write to IMR Powder Co., 6231 Robinson, Shawnee Mission, KS 66202.
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:)
 
243win , most load data was for the shorties, reason for its introduction most likely, and some of the 22 cal centerfire. like the low pressures on the heavy bullets

55 GR. NOS BT 55 IMR 4007 SSC .243" 2.650" 45.6 3515 38,800 CUP 48.5C 3834 48,300 CUP
58 GR. HDY V-MAX 58 IMR 4007 SSC .243" 2.600" 46.0 3550 42,800 CUP 49.0C 3794 49,200 CUP
60 GR. SIE HP 60 IMR 4007 SSC .243" 2.600" 45.7 3544 45,900 CUP 48.5C 3752 51,300 CUP
65 GR. HDY V-MAX 65 IMR 4007 SSC .243" 2.600" 44.6 3391 44,200 CUP 47.4 3646 51,000 CUP
70 GR. SPR HP 70 IMR 4007 SSC .243" 2.625" 43.7 3320 46,200 CUP 46.5 3515 50,900 CUP
75 GR. HDY HP 75 IMR 4007 SSC .243" 2.640" 42.3 3198 45,700 CUP 45.0 3391 51,100 CUP
80 GR. SIE BTSP 80 IMR 4007 SSC .243" 2.635" 40.0 2990 40,200 CUP 45.0 3319 50,400 CUP
90 GR. SPR SP 90 IMR 4007 SSC .243" 2.625" 39.0 2917 46,300 CUP 41.5 3062 49,900 CUP
95 GR. NOS PART 95 IMR 4007 SSC .243" 2.650" 37.0 2822 46,100 CUP 39.5 2937 49,600 CUP
100 GR. SPR BTSP 100 IMR 4007 SSC .243" 2.650" 37.2 2784 47,000 CUP 39.5 2905 50,400 CUP
105 GR. HDY A-MAX 105 IMR 4007 SSC .243" 2.760" 35.7 2665 43,600 CUP 38.0 2797 49,800 CUP
107 GR. SIE BTHP 107 IMR 4007 SSC .243" 2.850" 36.0 2707 47,300 CUP 38.0 2807 50,700 CUP
 
It's hard to compare single based powders to the double based RL series and ball powders, as they have different pressure curves than the single base stuff.

But yeah, for most applications, same ballpark
 
New powders? We don't NEED no steenkin' new powders.....there's nothing it can do that other existing powders can't do......you won't catch me buyin' powder in the fancy orange can..... it's all marketing hype...... I bet the gun rag writers are all over this one............between 4350 and 4064? Like that hole needed filling..........


How am I doing?:D :D :dancingbanana:
 
blindside said:
And ecspecially for use in new short,tall,fat,skinny,etc,etc magnums..Or in this case I'm hoping so, cause the published data for the three classics is pretty sad
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how is a 30-06 150 gr load going almost 3000 fps sad. :confused:
 
There is so little difference in burning rate between IMR4064 & IMR 4320, that they swap places depending on application. I would say the burning rate of this one more closely duplicates H380, which, of course, is a ball powder. While there are other powders in this burn rate area, a SSC extruded is welcome as far as I am concerned. My Swift will probably use it to excellent effect with 55/60 grainers. Also should make a great showing in the 35 Whelen and 8X57. I can't wait to get my hands on some to try. Regards, Eagleye.
 
Eagleye said:
There is so little difference in burning rate between IMR4064 & IMR 4320, that they swap places depending on application. I would say the burning rate of this one more closely duplicates H380, which, of course, is a ball powder. While there are other powders in this burn rate area, a SSC extruded is welcome as far as I am concerned. My Swift will probably use it to excellent effect with 55/60 grainers. Also should make a great showing in the 35 Whelen and 8X57. I can't wait to get my hands on some to try. Regards, Eagleye.
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My thoughts too.

8mm for sure and hoping it will place well in 308 Win and possibly 303.
 
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