Originally Posted by Salar600
MagPro as the reputation to produce high velocity but I never tried it.
Magpro is a bad powder for use with fed primers, so if you try that one stay away from fed primers. We've had a number of rifles show this tendancy and I even talked with one of the techs at Sierra about it. He said another primer should be fine (ie. win or cci) but the powder was already destined for file 13.