It's important to note that while W760, H414 and Accurate 2700 are the same powders
now, that's not the case with the older stuff. They were very close in burn rate but physically quite different.
Good shootin'
At one time, that was also the case with MRP & RL-22.
And I still have both powders from that vintage.
MRP was darker, fully cylindrical kernels while '22 was flatter, more irregular & lighter in color.
But then, as now, I loaded their charge weights interchangeably, at least in 270, 280, 3006 & 338's.
MM
