Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 115gr | Barnes RNSP bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 55,361 psi | 87% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,869 psi | 89% | 2920 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 57,000 psi | 89% | 3038 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 53,809 psi | 84% | 2972 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 57,682 psi | 90% | 2877 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,522 psi | 90% | 2976 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,347 psi | 87% | 2979 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2871 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,164 psi | 69% | 2831 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,099 psi | 85% | 2913 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,580 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,056 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,087 psi | 89% | 2966 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,376 psi | 87% | 2976 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,536 psi | 89% | 2949 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,956 psi | 89% | 3038 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,072 psi | 89% | 2940 fps | 96.4% |
| Bofors RP15 | <<locked>> | 96% | 54,201 psi | 85% | 2956 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,735 psi | 81% | 2946 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 55,376 psi | 87% | 2976 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 55,521 psi | 87% | 2864 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,491 psi | 85% | 2963 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 54,795 psi | 86% | 2917 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,363 psi | 90% | 2930 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,114 psi | 86% | 2917 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,099 psi | 85% | 2900 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,740 psi | 90% | 2894 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,665 psi | 86% | 3081 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 55,187 psi | 86% | 2953 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 58% | 1821 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,116 psi | 90% | 2904 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,942 psi | 89% | 2887 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,942 psi | 89% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,231 psi | 88% | 2900 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 56,840 psi | 89% | 3015 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 57,624 psi | 90% | 2887 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,811 psi | 87% | 2884 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,505 psi | 85% | 2904 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 39,784 psi | 62% | 2756 fps | 97.8% |
| Norma MRP | <<locked>> | 92% | 55,129 psi | 86% | 2999 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,230 psi | 87% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,824 psi | 84% | 2976 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 86% | 54,085 psi | 85% | 2907 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,898 psi | 88% | 2969 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,014 psi | 60% | 1867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,956 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,839 psi | 86% | 2966 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3081 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2953 fps | 97% |
| Rottweil R 903 | <<locked>> | 82% | 56,956 psi | 89% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,969 psi | 86% | 2887 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 56,550 psi | 89% | 2953 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 55,521 psi | 87% | 2864 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,624 psi | 90% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,811 psi | 87% | 2884 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,623 psi | 89% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,913 psi | 89% | 2841 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,144 psi | 88% | 2949 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 56,463 psi | 88% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,521 psi | 89% | 2881 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 55,666 psi | 87% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,043 psi | 89% | 2923 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,595 psi | 90% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,014 psi | 89% | 2894 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,608 psi | 89% | 2904 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 56,217 psi | 88% | 2900 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,172 psi | 86% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,969 psi | 86% | 2992 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 54,897 psi | 86% | 2972 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,372 psi | 81% | 2963 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,231 psi | 88% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,795 psi | 86% | 2917 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,012 psi | 85% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,130 psi | 90% | 2923 fps | 99.5% |
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 3100 | <<locked>> | 80% | 34,635 psi | 54% | 2493 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 46,412 psi | 73% | 2753 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 40,089 psi | 63% | 2717 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 88% | 46,920 psi | 74% | 2848 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 54,027 psi | 85% | 2822 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,479 psi | 60% | 2618 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 42,206 psi | 66% | 2730 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 40,596 psi | 64% | 2690 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 32,068 psi | 50% | 2526 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,044 psi | 61% | 2625 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,411 psi | 70% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,372 psi | 81% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,696 psi | 61% | 2618 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,854 psi | 58% | 2612 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,069 psi | 52% | 2520 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,848 psi | 45% | 2421 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,376 psi | 57% | 2661 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,403 psi | 84% | 2877 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 36,622 psi | 57% | 2605 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 39,523 psi | 62% | 2707 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 36,854 psi | 58% | 2612 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 48,936 psi | 77% | 2756 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,914 psi | 61% | 2654 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 47,950 psi | 75% | 2802 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,299 psi | 79% | 2812 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 45,136 psi | 71% | 2740 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,295 psi | 69% | 2720 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,887 psi | 66% | 2641 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,709 psi | 58% | 2690 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 47,500 psi | 74% | 2825 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 43% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,237 psi | 69% | 2684 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,328 psi | 79% | 2782 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 44,048 psi | 69% | 2697 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,845 psi | 69% | 2677 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 40,611 psi | 64% | 2707 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,674 psi | 75% | 2726 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,122 psi | 72% | 2717 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 29,878 psi | 47% | 2372 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 44,469 psi | 70% | 2723 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 34,824 psi | 55% | 2631 fps | 95.9% |
| Norma MRP | 44.4 gr | 80% | 35,969 psi | 56% | 2621 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 45,339 psi | 71% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,364 psi | 63% | 2717 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 44,309 psi | 69% | 2733 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 35,897 psi | 56% | 2589 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,195 psi | 72% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,266 psi | 69% | 2785 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,359 psi | 52% | 2595 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,702 psi | 73% | 2887 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 53,229 psi | 83% | 2812 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,030 psi | 63% | 2605 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,811 psi | 59% | 2598 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 48,936 psi | 77% | 2756 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,674 psi | 75% | 2726 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,122 psi | 72% | 2717 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,316 psi | 84% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,891 psi | 73% | 2677 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,478 psi | 59% | 2592 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 52,866 psi | 83% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,482 psi | 68% | 2651 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,293 psi | 66% | 2694 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,450 psi | 60% | 2585 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 50,749 psi | 80% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,876 psi | 73% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,578 psi | 56% | 2513 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 46,180 psi | 72% | 2733 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,159 psi | 58% | 2598 fps | 99.5% |
| Vihtavuori N560 | 47.8 gr | 86% | 44,744 psi | 70% | 2802 fps | 96% |
| Vihtavuori N565 | <<locked>> | 90% | 41,771 psi | 65% | 2726 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 47,921 psi | 75% | 2897 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,818 psi | 72% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,950 psi | 75% | 2802 fps | 99.3% |
| Winchester StaBALL HD | 44 gr | 80% | 29,573 psi | 46% | 2539 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,579 psi | 59% | 2566 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 76 powders for .240 Weath. Mag. loaded with the .243 | 115gr | Barnes RNSP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,081 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,081 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .240 Weath. Mag. with the .243 | 115gr | Barnes RNSP 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.