10mm reloading question

Discussion in 'The Ammo & Reloading Forum' started by mark9765, Apr 28, 2009.

  1. mark9765

    mark9765 New Member

    Mar 22, 2009
    Gun: 10mm S&W
    Bullet: 180gr HP XTP
    Powder: Tightgroup 5.9gr
    12 shots average FPS: 1035fps

    I just loaded and chronoed the cartridges above. I want to reload with a 180gr lead bullet. But I don't have a good load for a lead bullet in a 10mm. Dropping the load from 5.9gr to 5.5 should get the fps down below 1000fps.I also have HP38 and WSF powder. Any thoughts or concerns?
  2. LDBennett

    LDBennett Well-Known Member

    Dec 20, 2003
    Hesperia, CA

    I bought a Delta Elite Colt 10mm the first year it was introduced and have been shooting it every since. My regular load is 175 grain Rainier plated bullets and 5.5 grains of W231. That works out to be 1002 FPS in my gun. The recoil is about the same as a 45ACP in a 1911.

    For more excitement I shoot 200 grain Hornady TCFMJ bullets with 10.1 grains of Accurate Arms #7 for 1034 FPS. This load is a twister in this gun with a healthy recoil. It is a bit too much "fun" for me, normally.

    Hodgdon's latest addendum manual lists 180 grain JHC at 5.4 to 6.0 grains of Titegroup. Dropping to the starting load (5.4 grains of Titegroup) would probably be just fine for a cast bullet. Try it, chronograph it, and slowly increase the load until you reach your desired 1000 FPS. For added insurance against leading the bore I would use the plated bullets (Berry's or Rainier).