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Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity,  pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may easily be excessive in others. All loads should be reduced by 5%,  and developed following safe handloading practices as represented in established reloading manuals produced by component manufacturers. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.
 

Cartridge: 44 Remington Magnum – For use in strong rifle action  only

  Firearm: Ruger K77/44 Rotary Mag   Max COL: 1.610″
  Bullet Diameter: 0.429″   Primer: CCI 350
  Barrel: 18.5″   Reloading Dies: Lee & Factory Crimp
  Max case length: 1.275″   Group: Distance 50 yards – Three shots

Not for use in handguns

COL and Capacity   Load Data & Performance
Bullet Type Bullet
Weight
C.O.L.
Inches
Net Case
Grains
  Powder Charge
Grains
Muzzle
Velocity
FPS
Muzzle
Energy Ft/Lbs
Group
Inches
Remington SJHP 180 1.600 30.2   AA9 25.4 2243 2011 0.9
Remington SJHP 180 1.600 30.2   Alliant 2400 26.0 2250 2024 0.7
Remington SJHP 180 1.600 30.2   H110 31.5 2238 2002 0.8
Remington SJHP 180 1.600 30.2   Enforcer 28.0 2265 2051 0.7
Sierra JHC 210 1.600 25.5   Alliant 2400 23.0 2004 1873 0.8
Sierra JHC 210 1.600 25.5   H110 27.0 1933 1743 0.8
Sierra JHC 210 1.600 25.5   Enforcer 24.5 1998 1862 0.6
Sierra JHC 210 1.600 25.5   Win 296 27.5 2005 1875 0.7
Sierra JHC 240 1.600 23.4   Alliant 2400 20.0 1785 1698 0.6
Sierra JHC 240 1.600 23.4   H110 24.0 1762 1655 0.5
Sierra JHC 240 1.600 23.4   Enforcer 21.5 1795 1717 0.7
Sierra JHC 240 1.600 23.4   W296 24.0 1776 1681 0.7
Hornady HP/XTP 240 1.600 26.6   Alliant 2400 22.0 1893 1910 0.8
Hornady HP/XTP 240 1.600 26.6   H110 27.0 1923 1971 0.8
Hornady HP/XTP 240 1.600 26.6   Lil’ Gun 26.0 1941 2008 0.5
Hornady HP/XTP 240 1.600 26.6   Enforcer 23.5 1879 1882 0.8
Speer JSP GD 270 1.595 22.8   Alliant 2400 19.0 1675 1682 0.5
Speer JSP GD 270 1.595 22.8   Enforcer 20.5 1689 1711 0.7
Speer JSP GD 270 1.595 22.8   Win 296 23.5 1745 1826 0.6
Hornady HP/XPT 300 1.600 20.0   Alliant 2400 17.0 1538 1576 0.5
Hornady HP/XPT 300 1.600 20.0   H110 20.0 1492 1483 0.4
Hornady HP/XPT 300 1.600 20.0   Enforcer 18.0 1520 1539 0.8
Hornady HP/XPT 300 1.600 20.0   Win296 20.5 1559 1619 0.6