IMR 7828 vs. IMR 7828 SSC

[X-Ring]

IMR 7828 vs. IMR 7828 SSC
Can I use the data for IMR 7828 when I am using IMR 7828 SSC? I understand that is OK. Does the velocity stay the same with the same charge, or is it slightly different? Any experience out there?

 

[Grumulkin]

Those powders are identical except for the length of the kernels. You use the same powder charge and they're ballistically identical.

 

[JimKirk]

Yes by weight ....

The SC may takes up less room in a case ... this is good when working with compressed charges ...

I use lots of IMR 7828 in my .25/06 and my .243 Win. ... some of the charges are compressed and the IMR 7828 SC allows less compression...