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I am sorry but this not going to help you,I have tried RL-25(MRP-II) and N-560 with 140gr SSTs.RL-25 is too temperature sensistive ,each firing in the three shot groups would increase in velocity and it didn't group.I thought I would try N-560,it is listed by VihtVouri,but at a reduced CIP pressure level.But RL-22 was listed at plus 3000.So thought to push the velocity up to 3100.My rifle is" normal" throated so it's much more forgiving.The velocity increased evenly up to 3050,one more grain also went 3050.??? I don't think that is good.Too bad, it grouped great! Sorry, I couldn't be of more help.
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03-31-2005, 11:28 PM
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