Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:105 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 | 105gr | Berger BT Target bullet and 102 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-17 and ReloadSwiss RS 60.
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% | 56,173 psi | 88% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,244 psi | 85% | 2854 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,343 psi | 80% | 2890 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 56,565 psi | 89% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,305 psi | 90% | 3002 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,956 psi | 88% | 3087 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 82% | 55,811 psi | 87% | 2923 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,927 psi | 89% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,476 psi | 85% | 2982 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,127 psi | 82% | 2966 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,144 psi | 88% | 3054 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,694 psi | 86% | 2982 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,566 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,725 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,288 psi | 85% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,695 psi | 87% | 3031 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3031 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2966 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,037 psi | 75% | 2910 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,930 psi | 66% | 2822 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 3107 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,506 psi | 87% | 2936 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2890 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 55,013 psi | 86% | 2917 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2966 fps | 97.3% |
| Bofors RP7 | <<locked>> | 90% | 54,433 psi | 85% | 2897 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 55,448 psi | 87% | 2933 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 55,927 psi | 88% | 2999 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 55,956 psi | 88% | 2959 fps | 98.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 2976 fps | 96.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2956 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 56,478 psi | 89% | 2933 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,563 psi | 86% | 2923 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,463 psi | 88% | 2966 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,318 psi | 88% | 3038 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,246 psi | 90% | 2930 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,811 psi | 89% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,246 psi | 88% | 2907 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,564 psi | 87% | 2890 fps | 99% |
| IMR 4350 | <<locked>> | 94% | 55,274 psi | 87% | 2930 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,869 psi | 88% | 2923 fps | 99% |
| IMR 4831 | <<locked>> | 96% | 57,537 psi | 90% | 2989 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,941 psi | 88% | 2953 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,653 psi | 90% | 2966 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 82% | 56,202 psi | 88% | 2894 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,708 psi | 86% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,478 psi | 89% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,898 psi | 88% | 2920 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 57,072 psi | 89% | 2959 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,351 psi | 66% | 2733 fps | 97.7% |
| Norma 201 | <<locked>> | 82% | 54,563 psi | 86% | 2867 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,245 psi | 87% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,942 psi | 89% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,057 psi | 88% | 2982 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3058 fps | 99% |
| Norma URP | <<locked>> | 94% | 55,666 psi | 87% | 2982 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,302 psi | 85% | 2933 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,824 psi | 86% | 2986 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,309 psi | 69% | 2822 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 58% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,405 psi | 87% | 2913 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,361 psi | 87% | 2992 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,911 psi | 86% | 3022 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,087 psi | 89% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,608 psi | 87% | 3051 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,042 psi | 86% | 2864 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,853 psi | 86% | 2910 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,579 psi | 89% | 2956 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3012 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 54,433 psi | 85% | 2897 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,898 psi | 88% | 2920 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,202 psi | 88% | 2894 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,478 psi | 89% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,072 psi | 89% | 2959 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,434 psi | 88% | 2969 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,913 psi | 89% | 2927 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,317 psi | 85% | 2894 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,405 psi | 87% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,115 psi | 88% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,840 psi | 88% | 2871 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3009 fps | 98.2% |
| Somchem S335 | <<locked>> | 82% | 55,100 psi | 86% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,463 psi | 88% | 2910 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,969 psi | 86% | 2907 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,071 psi | 86% | 2989 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 2986 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 82% | 55,912 psi | 88% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,230 psi | 87% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,477 psi | 87% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,333 psi | 88% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,505 psi | 85% | 2927 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2851 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 86% | 57,479 psi | 90% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,217 psi | 90% | 2986 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 2989 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 3045 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,099 psi | 85% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,927 psi | 88% | 2999 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2956 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,041 psi | 85% | 2897 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,911 psi | 84% | 2927 fps | 97.6% |
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% | 49,501 psi | 78% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,442 psi | 74% | 2740 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 33,910 psi | 53% | 2546 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 46,876 psi | 73% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,476 psi | 56% | 2602 fps | 97.4% |
| Accurate High Country | <<locked>> | 96% | 48,414 psi | 76% | 2959 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 52,373 psi | 82% | 2867 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,338 psi | 69% | 2717 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 44,976 psi | 70% | 2808 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 49,110 psi | 77% | 2910 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,733 psi | 76% | 2933 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,933 psi | 70% | 2805 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,773 psi | 70% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,935 psi | 75% | 2815 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,664 psi | 54% | 2605 fps | 97.4% |
| Alliant Reloder-17 | 37.3 gr | 80% | 39,204 psi | 61% | 2740 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,382 psi | 70% | 2799 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,715 psi | 70% | 2851 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,166 psi | 43% | 2415 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,824 psi | 55% | 2648 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,024 psi | 49% | 2585 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,112 psi | 82% | 2884 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 43,772 psi | 69% | 2831 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 45,078 psi | 71% | 2756 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,715 psi | 70% | 2851 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,740 psi | 62% | 2618 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,266 psi | 71% | 2759 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 37,405 psi | 59% | 2644 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 43,279 psi | 68% | 2730 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 98% | 52,301 psi | 82% | 2917 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,517 psi | 81% | 2904 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,982 psi | 83% | 2881 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,256 psi | 51% | 2503 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,603 psi | 78% | 2861 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,030 psi | 61% | 2710 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 42% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,720 psi | 79% | 2828 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,519 psi | 84% | 2858 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,630 psi | 73% | 2749 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,936 psi | 77% | 2779 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 40,161 psi | 63% | 2651 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,031 psi | 64% | 2648 fps | 96.1% |
| IMR 4831 | <<locked>> | 80% | 34,026 psi | 53% | 2549 fps | 97% |
| IMR 4895 | <<locked>> | 80% | 49,168 psi | 77% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,111 psi | 80% | 2858 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 52,649 psi | 83% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,372 psi | 81% | 2792 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,905 psi | 74% | 2749 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,725 psi | 61% | 2602 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 36,985 psi | 58% | 2582 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 34,969 psi | 55% | 2572 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 51,155 psi | 80% | 2812 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,764 psi | 81% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,311 psi | 74% | 2799 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,585 psi | 71% | 2799 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 38,392 psi | 60% | 2746 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,375 psi | 55% | 2595 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 47,384 psi | 74% | 2818 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 36,796 psi | 58% | 2638 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 41,336 psi | 65% | 2759 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 43% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,469 psi | 71% | 2743 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,416 psi | 81% | 2930 fps | 100% |
| ReloadSwiss RS 60 | 37.3 gr | 80% | 41,684 psi | 65% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,186 psi | 55% | 2615 fps | 97% |
| ReloadSwiss RS 70 | 37.9 gr | 80% | 34,403 psi | 54% | 2618 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,747 psi | 76% | 2766 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,366 psi | 66% | 2700 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 49,632 psi | 78% | 2841 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 43,395 psi | 68% | 2782 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,740 psi | 62% | 2618 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,725 psi | 61% | 2602 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,649 psi | 83% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,905 psi | 74% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,985 psi | 58% | 2582 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,265 psi | 68% | 2749 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,330 psi | 84% | 2871 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,647 psi | 79% | 2838 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,880 psi | 81% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,743 psi | 69% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,029 psi | 60% | 2546 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,989 psi | 67% | 2776 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 51,793 psi | 81% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,011 psi | 83% | 2858 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,728 psi | 67% | 2700 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,879 psi | 50% | 2552 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 41,466 psi | 65% | 2710 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 52,402 psi | 82% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,675 psi | 76% | 2730 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,124 psi | 77% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,814 psi | 64% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,811 psi | 58% | 2598 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 40,596 psi | 64% | 2680 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,268 psi | 74% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,114 psi | 57% | 2595 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 29,515 psi | 46% | 2487 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 98% | 51,068 psi | 80% | 2982 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,071 psi | 57% | 2569 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 37,405 psi | 59% | 2644 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,570 psi | 40% | 2434 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,662 psi | 79% | 2844 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,874 psi | 69% | 2753 fps | 95.3% |
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 102 powders for .243 WSSM loaded with the .243 | 105gr | Berger BT Target. Alliant Reloder-26 delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,107 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 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 105.0 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 2213 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-17, ReloadSwiss RS 60 rank at the top here: for .243 WSSM with the .243 | 105gr | Berger BT Target 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.