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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 10%,  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: 40 S&W

  Firearm: SIG 229   Max COL: 1.135″
  Barrel: 3.9″   Reloading Dies: RCBS
  Max case length: .850″   Group distance: 25 yards
 Note:  

Bullet Type Bullet
Weight
Bullet
Diameter
C.O.L. Net Water
Capacity
Powder
Type
Charge Primer
Type
Muzzle
Velocity
Muzzle
Energy
Group
Size
Nosler HP 135 .400″ 1.100″ 12.9 Pwr Pistol 9.4 CCI 500 1320 522 1.7
Nosler HP 135 .400″ 1.100″ 12.9 Blue Dot 11.8 CCI 500 1285 495 2.0
Nosler HP 135 .400″ 1.100″ 12.9 Bullseye 6.8 CCI 500 1275 487 1.6
Speer Gold Dot 155 .400″ 1.120″ 11.4 Pwr Pistol 9.1 CCI 500 1215 508 1.4
Speer Gold Dot 155 .400″ 1.120″ 11.4 Blue Dot 10.8 CCI 500 1190 488 1.6
Speer Gold Dot 155 .400″ 1.120″ 11.4 Unique 7.4 CCI 500 1210 504 1.5
Remington JHP 155 .400″ 1.135″ 11.5 Pwr Pistol 8.5 CCI 500 1225 517 0.8
Remington JHP 155 .400″ 1.135″ 11.5 Blue Dot 10.6 CCI 500 1185 483 1.1
Remington JHP 155 .400″ 1.135″ 11.5 Bulleye 6.3 CCI 500 1200 496 0.9
Hornady HP-XTP 155 .400″ 1.125″ 12.1 Pwr Pistol 8.7 CCI 500 1225 517 1.2
Hornady HP-XTP 155 .400″ 1.125″ 12.1 Blue Dot 10.8 CCI 500 1180 479 1.2
Hornady HP-XTP 155 .400″ 1.125″ 12.1 Unque 7.2 CCI 500 1200 496 1.7
Speer Gold Dot 180 .400″ 1.135″ 9.6 Pwr Pistol 7.3 CCI 500 1020 416 1.3
Speer Gold Dot 180 .400″ 1.135″ 9.6 Blue Dot 9.0 CCI 500 1060 449 1.8
Speer Gold Dot 180 .400″ 1.135″ 9.6 Unique 6.2 CCI 500 1000 400 1.7
Nosler HP 180 .400″ 1.135″ 9.8 Pwr Pistol 7.4 CCI 500 1010 408 2.1
Nosler HP 180 .400″ 1.135″ 9.8 Blue Dot 9.2 CCI 500 970 376 1.6
Nosler HP 180 .400″ 1.135″ 9.8 AA #5 7.6 CCI 500 1025 420 1.8
Hornady HP-XTP 200 .400″ 1.135″ 7.2 Pwr Pistol 6.1 CCI 500 995 440 0.8
Hornady HP-XTP 200 .400″ 1.135″ 7.2 Blue Dot 7.1 CCI 500 915 372 0.9