Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:100 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:.243 WSSM load data
Case Length (l3):1.663"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:53.9 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber .243 WSSM with .243 | 100gr | Nosler Solid Base bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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% | 56,840 psi | 89% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,447 psi | 85% | 2933 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2966 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 57,072 psi | 89% | 2979 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,853 psi | 84% | 3028 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3179 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 56,057 psi | 88% | 3005 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,276 psi | 90% | 3012 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,230 psi | 87% | 3071 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,666 psi | 89% | 3143 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,840 psi | 89% | 3018 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,476 psi | 85% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,636 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,650 psi | 86% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,898 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,273 psi | 85% | 3051 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 3051 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2989 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,395 psi | 66% | 2900 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3189 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,072 psi | 88% | 3022 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,036 psi | 74% | 2966 fps | 96% |
| Bofors RP3 | <<locked>> | 86% | 55,303 psi | 87% | 2999 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 3051 fps | 97.2% |
| Bofors RP7 | <<locked>> | 90% | 54,607 psi | 86% | 2976 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 55,622 psi | 87% | 3012 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 56,101 psi | 88% | 3077 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 90% | 56,333 psi | 88% | 3041 fps | 98.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3064 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 56,695 psi | 89% | 3015 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,897 psi | 86% | 3005 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,116 psi | 90% | 3054 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,782 psi | 89% | 3123 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,317 psi | 85% | 2966 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,276 psi | 90% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,739 psi | 89% | 2992 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,927 psi | 88% | 2972 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 55,506 psi | 87% | 3009 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,391 psi | 88% | 3009 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 54,534 psi | 85% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,014 psi | 88% | 3031 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,810 psi | 86% | 2995 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 82% | 56,289 psi | 88% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,042 psi | 86% | 2930 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,971 psi | 89% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,362 psi | 88% | 3002 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 54,302 psi | 85% | 2992 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2808 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 54,882 psi | 86% | 2949 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,550 psi | 87% | 2946 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,305 psi | 90% | 3038 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,478 psi | 89% | 3064 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3143 fps | 99% |
| Norma URP | <<locked>> | 94% | 56,376 psi | 88% | 3068 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,810 psi | 86% | 3015 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,216 psi | 87% | 3068 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,831 psi | 70% | 2900 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 58% | 1923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,854 psi | 88% | 2999 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,448 psi | 87% | 3071 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,709 psi | 87% | 3110 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,450 psi | 90% | 3107 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,173 psi | 88% | 3136 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,317 psi | 87% | 2946 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,172 psi | 86% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,956 psi | 89% | 3038 fps | 96.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3100 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 90% | 54,607 psi | 86% | 2976 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,362 psi | 88% | 3002 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,289 psi | 88% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,971 psi | 89% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,302 psi | 85% | 2992 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,869 psi | 89% | 3054 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,522 psi | 90% | 3015 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,331 psi | 85% | 2972 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,550 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,681 psi | 89% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,159 psi | 88% | 2953 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3094 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 55,434 psi | 87% | 2877 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,043 psi | 89% | 2995 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,332 psi | 87% | 2989 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,245 psi | 87% | 3068 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,143 psi | 85% | 3015 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 82% | 56,014 psi | 88% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,680 psi | 87% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,014 psi | 88% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,463 psi | 88% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,824 psi | 86% | 3005 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2927 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 86% | 57,725 psi | 90% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,696 psi | 90% | 3068 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 3071 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 3130 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,708 psi | 86% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,521 psi | 89% | 3087 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,961 psi | 69% | 3041 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,723 psi | 86% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,360 psi | 85% | 3005 fps | 97.5% |
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% | 49,995 psi | 78% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,863 psi | 75% | 2818 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 36,695 psi | 57% | 2674 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 47,311 psi | 74% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,781 psi | 56% | 2674 fps | 97.2% |
| Accurate High Country | <<locked>> | 96% | 49,066 psi | 77% | 3041 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 52,721 psi | 83% | 2953 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,773 psi | 70% | 2799 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 45,324 psi | 71% | 2887 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,110 psi | 77% | 3015 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,432 psi | 84% | 2963 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,165 psi | 71% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,254 psi | 76% | 2894 fps | 99.8% |
| Alliant Reloder-16 | 36.2 gr | 80% | 35,041 psi | 55% | 2680 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,581 psi | 62% | 2815 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,701 psi | 70% | 2874 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,092 psi | 71% | 2927 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,340 psi | 43% | 2477 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,998 psi | 55% | 2713 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 86% | 33,402 psi | 52% | 2717 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,417 psi | 82% | 2966 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,164 psi | 69% | 2907 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 45,353 psi | 71% | 2835 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,092 psi | 71% | 2927 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,089 psi | 63% | 2694 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 45,803 psi | 72% | 2841 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 40,393 psi | 63% | 2779 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 43,424 psi | 68% | 2802 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 98% | 52,895 psi | 83% | 2999 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,287 psi | 84% | 2963 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,401 psi | 51% | 2572 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,734 psi | 78% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,511 psi | 67% | 2858 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,705 psi | 79% | 2907 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,679 psi | 84% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,065 psi | 74% | 2835 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,197 psi | 77% | 2858 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 40,567 psi | 64% | 2726 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,336 psi | 65% | 2726 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,360 psi | 54% | 2621 fps | 96.8% |
| IMR 4895 | <<locked>> | 80% | 49,472 psi | 78% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,213 psi | 80% | 2933 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 52,823 psi | 83% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,459 psi | 81% | 2874 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,036 psi | 74% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,044 psi | 61% | 2677 fps | 96.8% |
| Lovex S070 | <<locked>> | 80% | 37,275 psi | 58% | 2654 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 35,375 psi | 55% | 2644 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 51,605 psi | 81% | 2897 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,214 psi | 82% | 2897 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,601 psi | 75% | 2881 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,948 psi | 72% | 2877 fps | 95.4% |
| Norma MRP | <<locked>> | 90% | 38,595 psi | 60% | 2815 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,737 psi | 56% | 2671 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 47,761 psi | 75% | 2900 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 36,883 psi | 58% | 2707 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 41,640 psi | 65% | 2831 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 43% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,919 psi | 72% | 2825 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,967 psi | 81% | 3015 fps | 100% |
| ReloadSwiss RS 60 | 39 gr | 80% | 42,090 psi | 66% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,302 psi | 55% | 2684 fps | 96.7% |
| ReloadSwiss RS 70 | 39.6 gr | 80% | 34,650 psi | 54% | 2687 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 48,878 psi | 77% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,743 psi | 67% | 2779 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 49,864 psi | 78% | 2917 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 43,729 psi | 69% | 2858 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 40,089 psi | 63% | 2694 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,044 psi | 61% | 2677 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,823 psi | 83% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,036 psi | 74% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,275 psi | 58% | 2654 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,772 psi | 69% | 2831 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,664 psi | 84% | 2953 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,184 psi | 80% | 2923 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,141 psi | 82% | 2825 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,961 psi | 69% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,000 psi | 60% | 2612 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,323 psi | 68% | 2851 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 52,214 psi | 82% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,316 psi | 84% | 2940 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,149 psi | 68% | 2779 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 32,184 psi | 50% | 2625 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 41,800 psi | 66% | 2785 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 52,649 psi | 83% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,965 psi | 77% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,501 psi | 78% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,147 psi | 64% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,072 psi | 58% | 2671 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 96% | 43,787 psi | 69% | 2812 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,819 psi | 75% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,593 psi | 57% | 2671 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 29,791 psi | 47% | 2556 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 51,474 psi | 81% | 3061 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,303 psi | 57% | 2638 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 40,393 psi | 63% | 2779 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,354 psi | 43% | 2562 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,097 psi | 80% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,251 psi | 69% | 2828 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 100 powders for .243 WSSM loaded with the .243 | 100gr | Nosler Solid Base. Alliant Reloder-26 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,189 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 100.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .243 WSSM with the .243 | 100gr | Nosler Solid Base 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.