Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:109 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 | 109gr | Berger Long Range Hybrid Target 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 60, ReloadSwiss RS 70 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% | 56,347 psi | 88% | 2779 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,259 psi | 85% | 2799 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 2838 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 56,826 psi | 89% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,653 psi | 90% | 2946 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,333 psi | 88% | 3041 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 82% | 56,043 psi | 88% | 2867 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,246 psi | 90% | 2874 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,897 psi | 86% | 2933 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,721 psi | 83% | 2923 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,246 psi | 88% | 2995 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,752 psi | 86% | 2927 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,302 psi | 85% | 2844 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,389 psi | 85% | 2861 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,476 psi | 85% | 2946 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,014 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,696 psi | 90% | 2976 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2923 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,095 psi | 75% | 2854 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,989 psi | 66% | 2772 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 3048 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,941 psi | 88% | 2887 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,847 psi | 73% | 2841 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 54,998 psi | 86% | 2858 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2923 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 54,491 psi | 85% | 2841 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 55,477 psi | 87% | 2874 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 56,260 psi | 88% | 2946 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 56,101 psi | 88% | 2904 fps | 98.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 2923 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,317 psi | 87% | 2910 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 56,652 psi | 89% | 2874 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,839 psi | 86% | 2871 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,898 psi | 89% | 2913 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,101 psi | 88% | 2982 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 57% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,493 psi | 90% | 2874 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,290 psi | 90% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,492 psi | 89% | 2854 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,811 psi | 87% | 2838 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 55,521 psi | 87% | 2877 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,318 psi | 88% | 2871 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 54,172 psi | 85% | 2884 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,811 psi | 87% | 2890 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2910 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 82% | 56,507 psi | 89% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,781 psi | 86% | 2789 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,739 psi | 89% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,028 psi | 88% | 2864 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 57,305 psi | 90% | 2904 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,598 psi | 67% | 2684 fps | 98% |
| Norma 201 | <<locked>> | 82% | 54,665 psi | 86% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,347 psi | 87% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,319 psi | 90% | 2904 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,086 psi | 88% | 2927 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3005 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 55,927 psi | 88% | 2927 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,389 psi | 85% | 2874 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2904 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 94% | 54,795 psi | 86% | 2930 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,614 psi | 70% | 2779 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 58% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,463 psi | 87% | 2861 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,288 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,143 psi | 86% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,217 psi | 90% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,724 psi | 87% | 2995 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,075 psi | 64% | 2785 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 84% | 55,187 psi | 86% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,259 psi | 87% | 2858 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,536 psi | 89% | 2900 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,594 psi | 89% | 2959 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,491 psi | 85% | 2841 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,028 psi | 88% | 2864 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,507 psi | 89% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,739 psi | 89% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,305 psi | 90% | 2904 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,637 psi | 89% | 2913 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,348 psi | 90% | 2874 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,244 psi | 85% | 2835 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,361 psi | 87% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,333 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,057 psi | 88% | 2818 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 2953 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 55,230 psi | 87% | 2736 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,913 psi | 89% | 2858 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,926 psi | 86% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,984 psi | 86% | 2841 fps | 96.1% |
| Somchem S365 | <<locked>> | 96% | 55,013 psi | 86% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,012 psi | 85% | 2884 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 82% | 55,883 psi | 88% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,724 psi | 87% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,695 psi | 87% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,376 psi | 88% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,708 psi | 86% | 2871 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,734 psi | 78% | 2802 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 86% | 57,508 psi | 90% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,580 psi | 90% | 2933 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2933 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2995 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,143 psi | 85% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,260 psi | 88% | 2946 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,497 psi | 68% | 2910 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,404 psi | 85% | 2844 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2877 fps | 97.9% |
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% | 49,530 psi | 78% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,659 psi | 75% | 2690 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 34,243 psi | 54% | 2507 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,905 psi | 74% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,563 psi | 56% | 2552 fps | 97.7% |
| Accurate High Country | <<locked>> | 94% | 45,324 psi | 71% | 2844 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 52,489 psi | 82% | 2812 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,657 psi | 70% | 2667 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 92% | 45,121 psi | 71% | 2759 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 98% | 49,211 psi | 77% | 2861 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,066 psi | 77% | 2881 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,206 psi | 66% | 2700 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,831 psi | 70% | 2690 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,022 psi | 75% | 2759 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,954 psi | 55% | 2566 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,421 psi | 62% | 2690 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,713 psi | 65% | 2690 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,829 psi | 66% | 2743 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,469 psi | 40% | 2313 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,808 psi | 51% | 2546 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,140 psi | 49% | 2546 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,054 psi | 82% | 2825 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,121 psi | 69% | 2789 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,223 psi | 71% | 2703 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,829 psi | 66% | 2743 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,030 psi | 63% | 2575 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 45,759 psi | 72% | 2713 fps | 99.3% |
| Hodgdon H414 | 35.6 gr | 80% | 37,550 psi | 59% | 2598 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 40,654 psi | 64% | 2621 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 52,794 psi | 83% | 2871 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,634 psi | 81% | 2851 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 53,055 psi | 83% | 2822 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,532 psi | 51% | 2464 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,806 psi | 78% | 2808 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,131 psi | 61% | 2664 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 42% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,778 psi | 80% | 2776 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,490 psi | 84% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,963 psi | 74% | 2700 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,052 psi | 77% | 2726 fps | 98.3% |
| IMR 4350 | <<locked>> | 82% | 38,058 psi | 60% | 2556 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,350 psi | 65% | 2605 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 34,389 psi | 54% | 2510 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 49,240 psi | 77% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,053 psi | 80% | 2802 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 52,852 psi | 83% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,721 psi | 81% | 2743 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,268 psi | 74% | 2700 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,725 psi | 61% | 2552 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,043 psi | 58% | 2530 fps | 95.5% |
| Lovex S071 | <<locked>> | 92% | 32,909 psi | 52% | 2477 fps | 95% |
| Norma 201 | <<locked>> | 80% | 51,184 psi | 80% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,779 psi | 81% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,369 psi | 74% | 2746 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,757 psi | 67% | 2694 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 38,348 psi | 60% | 2694 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,447 psi | 56% | 2549 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 47,659 psi | 75% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,644 psi | 73% | 2835 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 34,360 psi | 54% | 2533 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 41,582 psi | 65% | 2717 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 43% | 1617 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,672 psi | 72% | 2694 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,634 psi | 81% | 2874 fps | 100% |
| ReloadSwiss RS 60 | 36.4 gr | 80% | 41,872 psi | 66% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,375 psi | 55% | 2572 fps | 97.3% |
| ReloadSwiss RS 70 | 37 gr | 80% | 34,592 psi | 54% | 2575 fps | 96.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,145 psi | 60% | 2713 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 49,081 psi | 77% | 2713 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,424 psi | 66% | 2648 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,586 psi | 73% | 2733 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 43,540 psi | 68% | 2733 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 40,030 psi | 63% | 2575 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,725 psi | 61% | 2552 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,852 psi | 83% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,268 psi | 74% | 2700 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,043 psi | 58% | 2530 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,439 psi | 68% | 2697 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,301 psi | 84% | 2815 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,821 psi | 80% | 2782 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,156 psi | 82% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,990 psi | 69% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,101 psi | 60% | 2500 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,134 psi | 68% | 2726 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,793 psi | 81% | 2687 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,953 psi | 83% | 2802 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,772 psi | 67% | 2644 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,169 psi | 80% | 2782 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 31,966 psi | 50% | 2507 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 38,870 psi | 61% | 2605 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 52,692 psi | 83% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,965 psi | 77% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,182 psi | 77% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,872 psi | 64% | 2579 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,927 psi | 58% | 2549 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 40,828 psi | 64% | 2635 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 47,732 psi | 75% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,521 psi | 57% | 2556 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 27,789 psi | 44% | 2392 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 98% | 51,242 psi | 80% | 2933 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,042 psi | 56% | 2520 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 37,550 psi | 59% | 2598 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,570 psi | 40% | 2398 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,937 psi | 80% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,830 psi | 69% | 2700 fps | 95.6% |
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 | 109gr | Berger Long Range Hybrid Target. Alliant Reloder-26 delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,048 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 57–90 %, leaving at least 10 % headroom. The 109.0 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, 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 60, ReloadSwiss RS 70, Hodgdon H414 rank at the top here: for .243 WSSM with the .243 | 109gr | Berger Long Range Hybrid 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.