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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: .223 Remington – Contender

  Firearm: T/C Contender   Max COL: 2.260″
  Barrel: 14″   Reloading Dies: RCBS
  Max case length: .1.760″   Group distance: 50 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
Hornady V-Max 40 .224″ 2.200″ 28.5 H335 29.6 BR4 3255 941 1.8
Hornady V-Max 40 .224″ 2.200″ 28.5 Re7 25.6 BR4 3260 944 1.3
Hornady V-Max 40 .224″ 2.200″ 28.5 IMR 4198 24.0 BR4 3215 918 1.7
Barnes XLC 45 .224″ 2.230″ 28.6 H335 28.6 BR4 3130 979 1.2
Barnes XLC 45 .224″ 2.230″ 28.6 Re7 24.6 BR4 3110 967 1.0 
Barnes XLC 45 .224″ 2.230″ 28.6 IMR 4198 23.6 BR4 3135 982 1.4
Speer TNT 50 .224″ 2.200″ 28.6 Re12 28.2 BR4 2980 986 0.7 
Speer TNT 50 .224″ 2.200″ 28.6 IMR 4198 23.0 BR4 2995 996 1.0
Speer TNT 50 .224″ 2.200″ 28.6 Win 748 28.5 BR4 3030 1020 0.8
Hornady V-Max 50 .224″ 2.200″ 27.4 Re7 23.4 BR4 2980 986 1.1
Hornady V-Max 50 .224″ 2.200″ 27.4 Re12 27.4 BR4 2975  983 1.2
Hornady V-Max 50 .224″ 2.200″ 27.4 IMR 3031 25.5 BR4 2955 970 0.4
Hornady V-Max 50 .224″ 2.200″ 27.4 Win 748 27.5 BR4 2990 993 0.9
Nosler Ballistic Tip 55 .224″ 2.260″ 27.9 Re12 27.2 BR4 2875 1010 0.9
Nosler Ballistic Tip 55 .224″ 2.260″ 27.9 IMR 4895 26.5 BR4 2860 999 0.8
Nosler Ballistic Tip 55 .224″ 2.260″ 27.9 Win 748 27.5 BR4 2925 1045 1.0 
Remington PSP 55 .224″ 2.230″ 28.7 Re12 27.8 BR4 2890 1020 0.7 
Remington PSP 55 .224″ 2.230″ 28.7 IMR 3031 25.7 BR4 2860 999 0.7
Remington PSP 55 .224″ 2.230″ 28.7 IMR 4895 27.3 BR4 2905 1031 1.6
Remington PSP 55 .224″ 2.230″ 28.7 Win 748 28.0 BR4 2930 1049 0.8
Sierra BlitzKing 55 .224″ 2.260″ 28.0 Re12 27.3 BR4 2880 1013 0.5 
Sierra BlitzKing 55 .224″ 2.260″ 28.0 IMR 4895 26.8 BR4 2890 1020 0.7
Sierra BlitzKing 55 .224″ 2.260″ 28.0 Win 748 27.6 BR4 2930 1049 0.9