Load Specifications
Bullet:.224 | 77gr | Barnes LRX BT
Bullet Manufacturer:Barnes
Bullet Weight:77 gr
Bullet Diameter:0.224"
Bullet Length:<<locked>>
Caliber:.223 WSSM load data
Case Length (l3):1.663"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:53.7 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:7.0
Load data in caliber .223 WSSM with .224 | 77gr | Barnes LRX BT bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Alliant Reloder-26.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 57,130 psi | 90% | 3130 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,216 psi | 87% | 3146 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 3186 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 57,725 psi | 90% | 3192 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,245 psi | 87% | 3248 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 54,650 psi | 86% | 3337 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 56,797 psi | 89% | 3225 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,795 psi | 86% | 3176 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,521 psi | 89% | 3291 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3274 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,867 psi | 84% | 3301 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,797 psi | 89% | 3291 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,434 psi | 87% | 3202 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,535 psi | 87% | 3222 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,246 psi | 88% | 3314 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,664 psi | 84% | 3274 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,985 psi | 88% | 3278 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 3268 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 3205 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,381 psi | 68% | 3104 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,012 psi | 85% | 3356 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,087 psi | 89% | 3245 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 3186 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 56,072 psi | 88% | 3215 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 3268 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 55,463 psi | 87% | 3189 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 56,521 psi | 89% | 3232 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,780 psi | 84% | 3238 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 57,261 psi | 90% | 3261 fps | 98.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3261 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 57,435 psi | 90% | 3235 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,579 psi | 89% | 3228 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,099 psi | 85% | 3212 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,447 psi | 85% | 3281 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 57% | 2037 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,071 psi | 86% | 3179 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,696 psi | 90% | 3215 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,913 psi | 89% | 3196 fps | 99% |
| IMR 4350 | <<locked>> | 94% | 56,623 psi | 89% | 3225 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,435 psi | 90% | 3228 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 55,724 psi | 87% | 3238 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,985 psi | 89% | 3255 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,941 psi | 88% | 3209 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 57,188 psi | 90% | 3192 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,564 psi | 87% | 3143 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,377 psi | 90% | 3199 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,421 psi | 90% | 3222 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 55,056 psi | 86% | 3202 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,685 psi | 68% | 3002 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 55,274 psi | 87% | 3163 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,101 psi | 88% | 3156 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,810 psi | 86% | 3205 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,725 psi | 90% | 3284 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 56,652 psi | 89% | 3366 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 57,638 psi | 90% | 3287 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,014 psi | 88% | 3238 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,492 psi | 89% | 3287 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,151 psi | 72% | 3110 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 58% | 2083 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,507 psi | 89% | 3212 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,652 psi | 89% | 3297 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,087 psi | 89% | 3330 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,492 psi | 87% | 3271 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,099 psi | 85% | 3301 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 56,188 psi | 88% | 3166 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,318 psi | 88% | 3212 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,752 psi | 86% | 3202 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,853 psi | 86% | 3258 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 55,463 psi | 87% | 3189 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,421 psi | 90% | 3222 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,188 psi | 90% | 3192 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,377 psi | 90% | 3199 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,056 psi | 86% | 3202 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,607 psi | 86% | 3219 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,347 psi | 87% | 3192 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,173 psi | 88% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,159 psi | 90% | 3087 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,421 psi | 90% | 3173 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,375 psi | 85% | 3251 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 55,854 psi | 88% | 3084 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,014 psi | 88% | 3202 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,724 psi | 89% | 3189 fps | 95.9% |
| Somchem S365 | <<locked>> | 96% | 56,927 psi | 89% | 3287 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,477 psi | 87% | 3228 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 56,753 psi | 89% | 3071 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,536 psi | 89% | 3120 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,898 psi | 89% | 3136 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,537 psi | 90% | 3176 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,289 psi | 88% | 3228 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3143 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 55,013 psi | 86% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,405 psi | 87% | 3232 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3291 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3356 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,159 psi | 88% | 3189 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,157 psi | 85% | 3245 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,092 psi | 71% | 3255 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,564 psi | 87% | 3199 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 3228 fps | 97.7% |
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 2495 | <<locked>> | 80% | 49,821 psi | 78% | 3022 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,457 psi | 76% | 3022 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 37,275 psi | 58% | 2861 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,210 psi | 74% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,868 psi | 56% | 2851 fps | 96.9% |
| Accurate High Country | <<locked>> | 96% | 50,560 psi | 79% | 3258 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,200 psi | 83% | 3166 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,339 psi | 71% | 3002 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 46,412 psi | 73% | 3097 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 50,502 psi | 79% | 3205 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,922 psi | 78% | 3228 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,412 psi | 73% | 3094 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,426 psi | 71% | 3022 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,689 psi | 76% | 3100 fps | 99.8% |
| Alliant Reloder-16 | 34.9 gr | 80% | 35,375 psi | 55% | 2871 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,292 psi | 63% | 3015 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,818 psi | 72% | 3084 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,079 psi | 72% | 3133 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,283 psi | 46% | 2707 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,520 psi | 56% | 2900 fps | 95.5% |
| Alliant Reloder-26 | 41.4 gr | 86% | 34,113 psi | 53% | 2907 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,171 psi | 83% | 3179 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 45,411 psi | 71% | 3117 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 45,716 psi | 72% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,079 psi | 72% | 3133 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 42,888 psi | 67% | 2946 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,253 psi | 72% | 3045 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 41,060 psi | 64% | 2979 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 44,034 psi | 69% | 3005 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,055 psi | 83% | 3192 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,809 psi | 84% | 3176 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,634 psi | 51% | 2749 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,604 psi | 79% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,176 psi | 63% | 2986 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 42% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,576 psi | 81% | 3123 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,630 psi | 75% | 3041 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,038 psi | 78% | 3071 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 41,147 psi | 64% | 2923 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,901 psi | 66% | 2923 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,708 psi | 54% | 2805 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 49,937 psi | 78% | 3133 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,402 psi | 82% | 3146 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 80% | 53,476 psi | 84% | 3136 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,098 psi | 82% | 3084 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,471 psi | 74% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,059 psi | 61% | 2861 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 39,885 psi | 63% | 2897 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 35,810 psi | 56% | 2825 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,735 psi | 81% | 3100 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,547 psi | 82% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,037 psi | 75% | 3084 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,065 psi | 74% | 3087 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 39,349 psi | 62% | 3009 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,911 psi | 56% | 2851 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,356 psi | 76% | 3104 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,463 psi | 59% | 2900 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,917 psi | 67% | 3041 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 43% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,180 psi | 72% | 3018 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,881 psi | 83% | 3235 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,888 psi | 67% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,795 psi | 56% | 2867 fps | 96.5% |
| ReloadSwiss RS 70 | 38.1 gr | 80% | 34,925 psi | 55% | 2871 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 49,240 psi | 77% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,844 psi | 67% | 2969 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,213 psi | 80% | 3136 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 44,846 psi | 70% | 3064 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 42,888 psi | 67% | 2946 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,059 psi | 61% | 2861 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,476 psi | 84% | 3136 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,471 psi | 74% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,885 psi | 63% | 2897 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,396 psi | 70% | 3031 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,880 psi | 81% | 3133 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,910 psi | 83% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,628 psi | 70% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,392 psi | 60% | 2802 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,440 psi | 70% | 3058 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 52,388 psi | 82% | 3031 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,265 psi | 68% | 2969 fps | 99.7% |
| Somchem S361 | <<locked>> | 94% | 52,750 psi | 83% | 3120 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,329 psi | 51% | 2799 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 42,337 psi | 66% | 2976 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 53,534 psi | 84% | 3022 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,705 psi | 78% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,893 psi | 78% | 3028 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,365 psi | 65% | 2894 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,347 psi | 59% | 2854 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 44,918 psi | 70% | 3015 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 48,312 psi | 76% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,883 psi | 58% | 2854 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 30,095 psi | 47% | 2726 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 53,171 psi | 83% | 3287 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,680 psi | 57% | 2822 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 41,060 psi | 64% | 2979 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,731 psi | 43% | 2736 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,054 psi | 82% | 3140 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,020 psi | 71% | 3025 fps | 95.1% |
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 99 powders for .223 WSSM loaded with the .224 | 77gr | Barnes LRX BT. Norma MRP delivers the highest muzzle velocity at 3,366 fps; across all powders the maximum-charge window runs from 2,037 fps to 3,366 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 77.0 gr projectile in 0.224" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. ReloadSwiss RS 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .223 WSSM with the .224 | 77gr | Barnes LRX BT 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.