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IMR 7828ssc

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 18:51
ckk1106 View Drop Down
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I've read loading data that uses IMR7828.  I was at a local sportsmans store and they had IMR 7828sc.  I'm trying to determine a load for my 338 win using barnes tsx 250 grain FB, and they list a load using IMR7828ssc.  Are these all the same or different powders?  thanks.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 20:08
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Originally posted by ckk1106 ckk1106 wrote:

I've read loading data that uses IMR7828.  I was at a local sportsmans store and they had IMR 7828sc.  I'm trying to determine a load for my 338 win using barnes tsx 250 grain FB, and they list a load using IMR7828ssc.  Are these all the same or different powders?  thanks.  
..................It is the same powder with the same burn rate! The SSC stands for (Super Short Cut), or smaller kernals designed to meter better..........The Hodgdon website shows IMR 7828 only! You can reload using the 7828 SSC using the loading info from the 7828! As always though, start low and work up!  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 20:47
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thanks for the info.  Do the use of theses different size powders produce different load densities.  For example if the 7828ssc calls for 70 grains and has a 101% load density, does the 7828 in 70 grains also have a 101% load density?   Thanks.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 21:51
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i would also look at reloader 22 and reloader 25, maybe even h-1000 or h-retumbo.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 21:52
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Originally posted by ckk1106 ckk1106 wrote:

thanks for the info.  Do the use of theses different size powders produce different load densities.  For example if the 7828ssc calls for 70 grains and has a 101% load density, does the 7828 in 70 grains also have a 101% load density?   Thanks.  
.......................The load densities may be a little different by a small percentage! Regardless of the load density, you should still work up your charges!!
 
This is exactly what it says in my `08 "Hodgdon Annual Manual for Reloading"
 
IMR 7828 SSC.......Quote!......"This magnum rifle powder has EXACTLY the same burn rate as standard IMR 7828 and USES the same data." "However, due to the super short kernels, metering is virtually as good as a spherical powder." "This ALLOWS up to 4% more powder space in the case and in many loads yields more velocity than standard 7828." "Such loads are marked with an asterisk in the data to show where the standard 7828 will not fit."....Unquote!
 
For the 338 WM, there is no data for IMR 7828 SSC in this manual. Just use the 7828 SSC powder using the standard 7828 loading data. Your density will be reduced with the SSC powder by about 4% using the same charge as the 7828!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/04/2008 at 22:13
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Originally posted by Big Squeeze Big Squeeze wrote:

Originally posted by ckk1106 ckk1106 wrote:

thanks for the info.  Do the use of theses different size powders produce different load densities.  For example if the 7828ssc calls for 70 grains and has a 101% load density, does the 7828 in 70 grains also have a 101% load density?   Thanks.  
.......................The load densities may be a little different by a small percentage! Regardless of the load density, you should still work up your charges!!
 
This is exactly what it says in my `08 "Hodgdon Annual Manual for Reloading"
 
IMR 7828 SSC.......Quote!......"This magnum rifle powder has EXACTLY the same burn rate as standard IMR 7828 and USES the same data." "However, due to the super short kernels, metering is virtually as good as a spherical powder." "This ALLOWS up to 4% more powder space in the case and in many loads yields more velocity than standard 7828." "Such loads are marked with an asterisk in the data to show where the standard 7828 will not fit."....Unquote!
 
For the 338 WM, there is no data for IMR 7828 SSC in this manual. Just use the 7828 SSC powder using the standard 7828 loading data. Your density will be reduced with the SSC powder by about 4% using the same charge as the 7828!
.......Forgot to add this! From the Hodgdon manual
 
BULLET: 250 gr. HDY SP              DIA: .338"           COL: 3.340"
 
                         Starting Loads                                         Maximum Loads
 
Powder        Grs.           Vel.           Pressure          Grs.         Vel.          Pressure
 
IMR 7828     70.0         2423        44,000 CUP       75.0C*   2628        51,800 CUP
 
At the bottom of that page it says this;
 
*MAX LOADS THAT SHOW AN ASTERISK FOLLOWING THE "C" FOR COMPRESSED LOAD, WILL NOT FIT WITH STANDARD IMR 7828.... REDUCE BY 4%
 
You cannot load the standard IMR 7828 using the above 75.0 grains! But you CAN use 75.0 gr. of IMR 7828 SSC..............................  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/12/2008 at 11:58
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I would tend to agree-- maybe 185-210 gr rounds for most game out of a 338 or as a gen'l purpose round  , and 210-250 gr.s  for heavier game like moose , big elk , and stuff that can bite ya back...

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/12/2008 at 21:25
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/13/2008 at 12:32
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