Load Specifications
Load data in caliber .223 Rem. with .224 | 55gr | Sierra SBT GameKing bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Hodgdon H335 and Alliant Reloder-10x.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 47,485 psi | 86% | 3022 fps | 99.7% |
| Accurate 2015 | <<locked>> | 98% | 46,978 psi | 85% | 3094 fps | 99.2% |
| Accurate 2460 | <<locked>> | 96% | 49,037 psi | 89% | 3140 fps | 97.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,435 psi | 70% | 2995 fps | 98.1% |
| Accurate 2520ᴾ | <<locked>> | 100% | 49,269 psi | 90% | 3182 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 90% | 47,964 psi | 87% | 3025 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 90% | 48,399 psi | 88% | 3031 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 88% | 47,340 psi | 86% | 3097 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 49,182 psi | 89% | 3179 fps | 98.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,441 psi | 84% | 3179 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 47,558 psi | 86% | 3133 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 88% | 49,008 psi | 89% | 3097 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 46,441 psi | 84% | 3002 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 94% | 47,282 psi | 86% | 3146 fps | 98% |
| Hodgdon H335 | <<locked>> | 94% | 48,733 psi | 89% | 3166 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 88% | 49,734 psi | 90% | 3077 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,444 psi | 57% | 1972 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,280 psi | 81% | 3153 fps | 98.2% |
| IMR 4198 | <<locked>> | 94% | 49,327 psi | 90% | 3123 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 49,734 psi | 90% | 3064 fps | 100% |
| Lovex D073.5 | <<locked>> | 96% | 49,516 psi | 90% | 3140 fps | 95.9% |
| Lovex S053 | <<locked>> | 84% | 48,428 psi | 88% | 3015 fps | 100% |
| Norma 200 | <<locked>> | 90% | 48,095 psi | 87% | 3123 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 44,947 psi | 82% | 3094 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,415 psi | 57% | 2021 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 46,920 psi | 85% | 3051 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 47,108 psi | 86% | 3110 fps | 95.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,530 psi | 90% | 3150 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 49,414 psi | 90% | 2864 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 49,487 psi | 90% | 3176 fps | 97.4% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 48,805 psi | 89% | 3146 fps | 98.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,646 psi | 88% | 3061 fps | 97.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,885 psi | 71% | 2881 fps | 95.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,326 psi | 86% | 3061 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 88% | 47,456 psi | 86% | 3048 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 48,849 psi | 89% | 3084 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,587 psi | 87% | 3068 fps | 99.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,566 psi | 72% | 3005 fps | 98.1% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,989 psi | 78% | 3022 fps | 96.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 41,350 psi | 75% | 2907 fps | 99% |
| Accurate 2015 | <<locked>> | 86% | 32,155 psi | 58% | 2776 fps | 95.6% |
| Accurate 2460 | <<locked>> | 92% | 43,033 psi | 78% | 3028 fps | 95.7% |
| Accurate 2495 | <<locked>> | 92% | 29,138 psi | 53% | 2766 fps | 95% |
| Accurate 2520 | <<locked>> | 96% | 43,134 psi | 78% | 3068 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 35,491 psi | 65% | 2762 fps | 95% |
| Accurate LT-32 | <<locked>> | 88% | 45,484 psi | 83% | 2976 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 36,869 psi | 67% | 2894 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 37,043 psi | 67% | 2927 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 82% | 25,962 psi | 47% | 2657 fps | 95.3% |
| Alliant Reloder-10x | 19.4 gr | 80% | 30,864 psi | 56% | 2762 fps | 96.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,014 psi | 69% | 2881 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 35,723 psi | 65% | 2782 fps | 95.5% |
| Hodgdon H322 | 22.5 gr | 88% | 38,493 psi | 70% | 2963 fps | 95.7% |
| Hodgdon H335 | 24.7 gr | 90% | 42,424 psi | 77% | 3041 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 39,160 psi | 71% | 2867 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,163 psi | 42% | 1772 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 34,214 psi | 62% | 2913 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 32,692 psi | 59% | 2766 fps | 97.8% |
| IMR 4227 | <<locked>> | 80% | 44,251 psi | 80% | 2969 fps | 100% |
| Lovex D073.5 | <<locked>> | 94% | 46,354 psi | 84% | 3084 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 43,163 psi | 78% | 2923 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,911 psi | 63% | 2851 fps | 98.3% |
| Norma 202 | <<locked>> | 96% | 39,508 psi | 72% | 2982 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,858 psi | 42% | 1808 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,005 psi | 80% | 2999 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 44,251 psi | 80% | 3054 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 94% | 41,133 psi | 75% | 2982 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,769 psi | 72% | 2710 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,524 psi | 74% | 2999 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 33,431 psi | 61% | 2812 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,509 psi | 74% | 2904 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 36,956 psi | 67% | 2838 fps | 95.2% |
| Somchem S335 | <<locked>> | 92% | 36,941 psi | 67% | 2851 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 37,028 psi | 67% | 2854 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,675 psi | 54% | 2664 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 88% | 32,895 psi | 60% | 2756 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 92% | 30,864 psi | 56% | 2789 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 98% | 40,350 psi | 73% | 2966 fps | 95.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 39 powders for .223 Rem. loaded with the .224 | 55gr | Sierra SBT GameKing. Accurate 2520 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,182 fps. Accurate 2495 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (379 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 2520, Alliant AR-Comp reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Hodgdon H322, Hodgdon H335, Alliant Reloder-10x rank at the top here: for .223 Rem. with the .224 | 55gr | Sierra SBT GameKing they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.