Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:108 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:1:8.0
Load data in caliber .243 WSSM with .243 | 108gr | Berger Elite Hunter bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Hodgdon H414.
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% | 56,637 psi | 89% | 2799 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,505 psi | 85% | 2815 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2848 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 56,710 psi | 89% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,392 psi | 90% | 2959 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3048 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 55,912 psi | 88% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,072 psi | 89% | 2887 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,636 psi | 86% | 2943 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 2933 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,057 psi | 88% | 3009 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,666 psi | 89% | 2890 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,172 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,679 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,679 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,738 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2986 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2930 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,196 psi | 76% | 2871 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,090 psi | 66% | 2785 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3064 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,753 psi | 87% | 2897 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2854 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 54,810 psi | 86% | 2871 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 2930 fps | 97.6% |
| Bofors RP7 | <<locked>> | 90% | 54,331 psi | 85% | 2851 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 55,288 psi | 87% | 2887 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 55,999 psi | 88% | 2956 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 55,883 psi | 88% | 2913 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 2936 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,998 psi | 86% | 2920 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 56,536 psi | 89% | 2887 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,621 psi | 86% | 2881 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,710 psi | 89% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,188 psi | 88% | 2995 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 57% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,348 psi | 90% | 2887 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,246 psi | 90% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,333 psi | 88% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,709 psi | 87% | 2851 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 55,303 psi | 87% | 2887 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,159 psi | 88% | 2884 fps | 99.2% |
| IMR 4831 | <<locked>> | 96% | 57,653 psi | 90% | 2946 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,072 psi | 88% | 2910 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,259 psi | 85% | 2871 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 82% | 56,362 psi | 88% | 2854 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,694 psi | 86% | 2802 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,579 psi | 89% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,202 psi | 88% | 2881 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 57,493 psi | 90% | 2923 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,772 psi | 67% | 2700 fps | 98% |
| Norma 201 | <<locked>> | 82% | 54,563 psi | 86% | 2822 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,245 psi | 87% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,159 psi | 90% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,217 psi | 88% | 2943 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3015 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 56,130 psi | 88% | 2946 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,215 psi | 85% | 2887 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,183 psi | 79% | 2917 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 94% | 54,984 psi | 86% | 2946 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,657 psi | 70% | 2789 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,303 psi | 87% | 2871 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,535 psi | 87% | 2949 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,347 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,334 psi | 90% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,840 psi | 88% | 3012 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,104 psi | 64% | 2799 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 55,071 psi | 86% | 2822 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,100 psi | 86% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,710 psi | 89% | 2917 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2972 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,331 psi | 85% | 2851 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,202 psi | 88% | 2881 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,362 psi | 88% | 2854 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,579 psi | 89% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,493 psi | 90% | 2923 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,797 psi | 89% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,159 psi | 90% | 2887 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,476 psi | 85% | 2854 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,332 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,231 psi | 88% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,854 psi | 88% | 2831 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2969 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 55,129 psi | 86% | 2749 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,724 psi | 89% | 2871 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,201 psi | 87% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,665 psi | 86% | 2851 fps | 96% |
| Somchem S365 | <<locked>> | 96% | 55,172 psi | 86% | 2946 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 2949 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 82% | 55,825 psi | 87% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,651 psi | 87% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,999 psi | 88% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,202 psi | 88% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,462 psi | 85% | 2881 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,443 psi | 77% | 2808 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 86% | 57,319 psi | 90% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,334 psi | 90% | 2943 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2949 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 3002 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,302 psi | 85% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,999 psi | 88% | 2956 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,598 psi | 68% | 2927 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,215 psi | 85% | 2854 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2884 fps | 97.8% |
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% | 49,850 psi | 78% | 2703 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,529 psi | 74% | 2700 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 34,098 psi | 53% | 2516 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 47,181 psi | 74% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,520 psi | 56% | 2566 fps | 97.6% |
| Accurate High Country | <<locked>> | 94% | 45,426 psi | 71% | 2861 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 52,388 psi | 82% | 2825 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,599 psi | 70% | 2680 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,976 psi | 70% | 2769 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 48,950 psi | 77% | 2867 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,892 psi | 77% | 2890 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,098 psi | 83% | 2835 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,759 psi | 70% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,964 psi | 75% | 2772 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,911 psi | 55% | 2575 fps | 97.7% |
| Alliant Reloder-17 | 36.6 gr | 80% | 39,305 psi | 62% | 2700 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,872 psi | 66% | 2707 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,959 psi | 66% | 2756 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,614 psi | 40% | 2329 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,692 psi | 51% | 2552 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,024 psi | 49% | 2552 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,286 psi | 82% | 2844 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 43,903 psi | 69% | 2795 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,136 psi | 71% | 2717 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,959 psi | 66% | 2756 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,972 psi | 63% | 2585 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,643 psi | 72% | 2726 fps | 99.2% |
| Hodgdon H414 | 35.8 gr | 80% | 37,492 psi | 59% | 2608 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 43,366 psi | 68% | 2690 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 98% | 52,533 psi | 82% | 2877 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,358 psi | 80% | 2858 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 52,953 psi | 83% | 2835 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,489 psi | 51% | 2474 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,705 psi | 78% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,305 psi | 62% | 2680 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 43% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,691 psi | 79% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,432 psi | 84% | 2812 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,905 psi | 74% | 2713 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,298 psi | 77% | 2743 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,567 psi | 64% | 2621 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,321 psi | 65% | 2615 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 34,316 psi | 54% | 2520 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 49,153 psi | 77% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,184 psi | 80% | 2818 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 52,707 psi | 83% | 2802 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,648 psi | 81% | 2756 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,195 psi | 74% | 2717 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,943 psi | 61% | 2569 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 36,970 psi | 58% | 2543 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 35,186 psi | 55% | 2539 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,488 psi | 81% | 2776 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,764 psi | 81% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,340 psi | 74% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,917 psi | 67% | 2707 fps | 95% |
| Norma MRP | <<locked>> | 90% | 38,435 psi | 60% | 2710 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,418 psi | 56% | 2559 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,543 psi | 75% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,775 psi | 73% | 2851 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 34,287 psi | 54% | 2543 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 41,307 psi | 65% | 2720 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 43% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,571 psi | 71% | 2707 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,488 psi | 81% | 2887 fps | 100% |
| ReloadSwiss RS 60 | 36.6 gr | 80% | 41,785 psi | 65% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,288 psi | 55% | 2582 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,476 psi | 54% | 2585 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,145 psi | 60% | 2726 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,023 psi | 77% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,351 psi | 66% | 2657 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,775 psi | 73% | 2749 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 43,395 psi | 68% | 2743 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,972 psi | 63% | 2585 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,943 psi | 61% | 2569 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,707 psi | 83% | 2802 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,195 psi | 74% | 2717 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,970 psi | 58% | 2543 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,337 psi | 68% | 2710 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,534 psi | 84% | 2831 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,749 psi | 80% | 2795 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,127 psi | 82% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,961 psi | 69% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,043 psi | 60% | 2510 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,975 psi | 67% | 2736 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,098 psi | 82% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,171 psi | 83% | 2818 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,033 psi | 67% | 2664 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,285 psi | 80% | 2795 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 31,894 psi | 50% | 2516 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 38,754 psi | 61% | 2615 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 52,649 psi | 83% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,921 psi | 77% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,110 psi | 77% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,799 psi | 64% | 2592 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,840 psi | 58% | 2562 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 40,654 psi | 64% | 2644 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,645 psi | 75% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,448 psi | 57% | 2566 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 27,731 psi | 43% | 2402 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 98% | 50,952 psi | 80% | 2940 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,187 psi | 57% | 2533 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 37,739 psi | 59% | 2615 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,686 psi | 40% | 2411 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,836 psi | 80% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,961 psi | 69% | 2717 fps | 95.5% |
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 113 powders for .243 WSSM loaded with the .243 | 108gr | Berger Elite Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,064 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 108.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. Alliant Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .243 WSSM with the .243 | 108gr | Berger Elite Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.