Does anyone know what the difference is between MRP and MRP II? Is there any loading data for MRP II? Speer #10 has MRP data, but that's the last time I have seen Norma powder in a Speer Manual.
Posts: 151 | Location: Texas | Registered: 18 November 2003
MRP is very close to reloader 22 and MRP2 is very close to reloader 25. That does not mean that I can in any way verify that they are substitutes, but my experience is that they are close enough so you can use starting loads for the reloader 22/25 with MRP/MRP2 and be safe.
I think reloader 22 and MRP used to be the same powder in different wrapping, if thats still the truth I do not know...