Originally Posted by
pmclaine
I was lead to believe that early in the desert war it was found the RL-15 ammo had overpressure issues in the heat and future rounds would be loaded with IMR 4064.
There is a build sheet out there that shows the Navy MK316, used by spec ops for their long range round loaded with 41.7 to 8 of IMR4064 under a 175MK with Fed Match Primers.
The load sleuthers Ive followed like 41.7 to 8 of IMR 4064 under a 175 SMK with 42.7 for a 168 to clone FGMM.
Just some extra info to add.