Originally Posted by Azshooter
The power pro 4000 MR is extruded with shorter but same diameter kernels as RL-17.


I'm extremely surprised by that. Alliant claimed (still claims, both on the web and on the phone) that the entire PowerPro line is spherical, and they always claim it's coming out of the General Dynamics facility in St. Marks. I wonder what's going on?

I also wonder what cartridge(s) each of the PowerPro powders was designed for. The website claims that each was designed for a specific cartridge, but nowhere do they tell you what cartridge, and if you ask them on the phone, they seem confused. Hopefully we can get some better info from Alliant on this powder series soon.