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Load data for the Winchester 175gr STHP

Discussion in '10mm Reloading Forum' started by SimonovsDog, Mar 5, 2010.

  1. SimonovsDog


    Sep 27, 2009
    I bought some new primed Winchester brass and 175gr STHP bullets. Before pulling a bullet from some live Win STHP, I wondered if any of you 10mm reloaders can tell me what powder and weight Winchester uses for this load? I weighed a bullet and primed brass, and then a live round, and came up with a 14.5gr difference. I can't find a Winchester load that calls for 14.5gr of any powder. What gives?
  2. G20gunner


    Mar 7, 2010
    Why not just use 180gr. load data. With a 175gr. bullet, the pressure would be lower and the velocity maybe a little faster.