Load Specifications
Bullet:.243 | 100gr | Norma ORYX
Bullet Manufacturer:Norma
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:1:9.0
Load data in caliber .243 WSSM with .243 | 100gr | Norma ORYX bullet and 105 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 Hodgdon Superformance.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 54,346 psi | 85% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,144 psi | 88% | 2943 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 2910 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 54,752 psi | 86% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,100 psi | 86% | 3035 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,592 psi | 84% | 3110 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 84% | 57,421 psi | 90% | 3015 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,940 psi | 86% | 2963 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 3071 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,072 psi | 88% | 2956 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,711 psi | 90% | 2923 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,795 psi | 84% | 3084 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,985 psi | 88% | 3064 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,405 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,970 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,564 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,305 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 3054 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,718 psi | 76% | 2986 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,108 psi | 72% | 2940 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,364 psi | 63% | 2838 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3130 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,290 psi | 90% | 3028 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,405 psi | 88% | 3005 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,718 psi | 76% | 2986 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 55,970 psi | 88% | 2982 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,653 psi | 90% | 2940 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,057 psi | 88% | 2989 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,855 psi | 89% | 3018 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 57,174 psi | 90% | 3084 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 57,348 psi | 90% | 3041 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 54,491 psi | 85% | 2969 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,854 psi | 88% | 3009 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,592 psi | 86% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,795 psi | 84% | 3061 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 56% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,651 psi | 87% | 2972 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,042 psi | 86% | 2953 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,650 psi | 86% | 2949 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,609 psi | 90% | 2986 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 56,623 psi | 89% | 3012 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,346 psi | 85% | 2956 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,492 psi | 87% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,450 psi | 90% | 3041 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,072 psi | 88% | 2956 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,682 psi | 90% | 2986 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,434 psi | 88% | 2936 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,839 psi | 86% | 2943 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,377 psi | 90% | 3005 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,259 psi | 87% | 2992 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,582 psi | 64% | 2753 fps | 96.7% |
| Norma 201 | <<locked>> | 84% | 56,173 psi | 88% | 2956 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,840 psi | 89% | 2953 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,201 psi | 87% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,464 psi | 90% | 3064 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 51,851 psi | 81% | 3081 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 57,392 psi | 90% | 3074 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,999 psi | 88% | 3022 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,985 psi | 88% | 3068 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 56,434 psi | 88% | 2986 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,246 psi | 88% | 2999 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,217 psi | 90% | 3005 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,753 psi | 89% | 3081 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,536 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,868 psi | 86% | 3058 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,232 psi | 90% | 3140 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 56,971 psi | 89% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,637 psi | 89% | 2953 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,275 psi | 88% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,331 psi | 85% | 2979 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3038 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 55,970 psi | 88% | 2982 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,377 psi | 90% | 3005 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,682 psi | 90% | 2986 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,839 psi | 86% | 2943 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,259 psi | 87% | 2992 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,621 psi | 86% | 3009 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,187 psi | 86% | 2963 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,811 psi | 87% | 2982 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,246 psi | 90% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,636 psi | 86% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,479 psi | 90% | 2956 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 3035 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 56,768 psi | 89% | 2881 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,752 psi | 86% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,391 psi | 88% | 2992 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,144 psi | 88% | 3071 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3015 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 84% | 57,667 psi | 90% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,826 psi | 89% | 2910 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,435 psi | 90% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,186 psi | 85% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,202 psi | 88% | 3015 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,355 psi | 74% | 2867 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 56,565 psi | 89% | 2956 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,434 psi | 87% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,245 psi | 87% | 3018 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 3018 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,724 psi | 87% | 2979 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,101 psi | 89% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,595 psi | 90% | 3087 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,466 psi | 65% | 2976 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,825 psi | 87% | 2989 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 2943 fps | 96.6% |
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% | 47,543 psi | 75% | 2779 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,093 psi | 72% | 2769 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 37,275 psi | 58% | 2680 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,991 psi | 71% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,779 psi | 53% | 2615 fps | 96.2% |
| Accurate High Country | <<locked>> | 98% | 49,647 psi | 78% | 3041 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,531 psi | 79% | 2904 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,091 psi | 68% | 2753 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,122 psi | 72% | 2887 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,634 psi | 82% | 2904 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,331 psi | 85% | 2881 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,688 psi | 73% | 2956 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,311 psi | 73% | 2890 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,062 psi | 67% | 2772 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,137 psi | 72% | 2841 fps | 99.5% |
| Alliant Reloder-16 | 34.7 gr | 80% | 33,547 psi | 53% | 2631 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,768 psi | 59% | 2762 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,716 psi | 72% | 2881 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,629 psi | 72% | 2927 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,717 psi | 43% | 2484 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,520 psi | 56% | 2713 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,968 psi | 53% | 2723 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,140 psi | 79% | 2913 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,265 psi | 68% | 2785 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,629 psi | 72% | 2927 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 43,584 psi | 68% | 2756 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,157 psi | 85% | 2887 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,199 psi | 82% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,787 psi | 69% | 2792 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 41,191 psi | 65% | 2789 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 44,411 psi | 70% | 2808 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,097 psi | 80% | 2913 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,067 psi | 49% | 2526 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,543 psi | 75% | 2894 fps | 100% |
| Hodgdon Superformance | 41.5 gr | 84% | 40,480 psi | 63% | 2799 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 42% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,965 psi | 77% | 2864 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,387 psi | 81% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,295 psi | 71% | 2785 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,645 psi | 75% | 2812 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 41,481 psi | 65% | 2733 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,885 psi | 63% | 2677 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 32,764 psi | 51% | 2572 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 47,311 psi | 74% | 2874 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,634 psi | 82% | 2904 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,575 psi | 79% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,082 psi | 78% | 2835 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,527 psi | 71% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,260 psi | 58% | 2625 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 40,422 psi | 63% | 2713 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 35,578 psi | 56% | 2641 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,356 psi | 77% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,893 psi | 78% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,513 psi | 71% | 2831 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,050 psi | 74% | 2887 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 42,119 psi | 66% | 2887 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,852 psi | 53% | 2615 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,455 psi | 71% | 2848 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,579 psi | 59% | 2713 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,692 psi | 83% | 2923 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,823 psi | 83% | 2946 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,106 psi | 69% | 2776 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,617 psi | 78% | 2963 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,190 psi | 63% | 2828 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,460 psi | 52% | 2628 fps | 95.7% |
| ReloadSwiss RS 70 | 38.9 gr | 82% | 35,418 psi | 56% | 2697 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 53,490 psi | 84% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,036 psi | 74% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,625 psi | 64% | 2726 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,879 psi | 80% | 2920 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 44,338 psi | 69% | 2858 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 43,584 psi | 68% | 2756 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,260 psi | 58% | 2625 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,575 psi | 79% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,527 psi | 71% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,422 psi | 63% | 2713 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,785 psi | 65% | 2782 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,343 psi | 80% | 2900 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,153 psi | 77% | 2874 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,589 psi | 79% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,525 psi | 67% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,102 psi | 61% | 2625 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,021 psi | 74% | 2913 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,096 psi | 79% | 2785 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,039 psi | 80% | 2890 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,075 psi | 64% | 2726 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,429 psi | 48% | 2566 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 42,322 psi | 66% | 2782 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,053 psi | 80% | 2776 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,210 psi | 74% | 2772 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,355 psi | 74% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,204 psi | 61% | 2657 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,230 psi | 55% | 2618 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 44,295 psi | 69% | 2812 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,997 psi | 83% | 2904 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,876 psi | 72% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,838 psi | 55% | 2618 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,226 psi | 47% | 2562 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,650 psi | 54% | 2589 fps | 98.5% |
| Winchester 748 | <<locked>> | 80% | 53,519 psi | 84% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,191 psi | 65% | 2789 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,905 psi | 44% | 2569 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,124 psi | 77% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,080 psi | 75% | 2884 fps | 95.8% |
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 105 powders for .243 WSSM loaded with the .243 | 100gr | Norma ORYX. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,854 fps to 3,140 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, Hodgdon Superformance rank at the top here: for .243 WSSM with the .243 | 100gr | Norma ORYX 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.