MRP vs MRP-2

Discussion in 'Reloading' started by HOBO270, Jan 6, 2011.

  1. HOBO270

    HOBO270 Well-Known Member

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    Jul 11, 2010
    Can anyone tell me what the major difference is between these two powders? I'm thinking MRP=RL22 and MRP-2=RL25. Or something close to that. I have a 257 Weatherby that I load, and the other day I got a can of Norma MRP-2, but there is just not much data on it. From what I have found so far, it looks like I can load 69 gr. MRP-2 and 115 TSX and be fine. Does anyone have any data for this powder and caliber or know a good place to look? I would greatly appreciate it.
     
  2. roninflag

    roninflag Well-Known Member

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    i have had real good results in my 6.5-284 with mrp-2. in the norma manual the max for 117 is 75.2 for mrp-2 and 69.8 for mrp.
     

  3. BountyHunter

    BountyHunter Writers Guild

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    Compare exactly to RL-22 and RL-25. You will be right on the money.

    Norma powders tend to be less temp sensitive and more uniform lot to lot.

    MRP has been a well kept secret powder for the WSM (210s at 2950-3050 fps) with longer barrels.

    MRP2 works great in the 338 Lapua and AI version

    BH
     
  4. HOBO270

    HOBO270 Well-Known Member

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    Jul 11, 2010
    Looks like I should have got MRP instead of MRP-2. I've been trying to find a good powder for my 100 TTSX. RL22 no good so far. IMR7828 gave me 3650 fps. and Accuracy was about 1.75". Guess I'll keep tweaking on that to see what it will do.