Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 100gr | Hornady InterLock RN bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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 3100 | <<locked>> | 96% | 54,317 psi | 85% | 3051 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 56,115 psi | 88% | 3104 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,840 psi | 88% | 3202 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 96% | 56,608 psi | 89% | 3202 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 57,377 psi | 90% | 3068 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,956 psi | 89% | 3153 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 54,491 psi | 85% | 3143 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,408 psi | 63% | 2900 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,855 psi | 89% | 3146 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,998 psi | 86% | 3038 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,782 psi | 89% | 3163 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,128 psi | 85% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,115 psi | 88% | 3133 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,157 psi | 85% | 3143 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,288 psi | 87% | 3127 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 3114 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,535 psi | 87% | 3212 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3182 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 56,304 psi | 88% | 3058 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,789 psi | 73% | 3028 fps | 96.2% |
| Bofors RP5 | <<locked>> | 96% | 54,157 psi | 85% | 3143 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 55,245 psi | 87% | 3045 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,357 psi | 79% | 3058 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,086 psi | 88% | 3071 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,143 psi | 85% | 3094 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 57,087 psi | 89% | 3110 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 54,418 psi | 85% | 3081 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,174 psi | 90% | 3127 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,058 psi | 89% | 3077 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,821 psi | 78% | 3163 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 86% | 54,505 psi | 85% | 3130 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 57% | 1952 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,000 psi | 89% | 3051 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,695 psi | 89% | 3084 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,739 psi | 89% | 3071 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 56,173 psi | 88% | 3091 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,970 psi | 88% | 3074 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 56,014 psi | 88% | 3186 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 57,435 psi | 90% | 3045 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,174 psi | 90% | 3068 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 55,172 psi | 86% | 3058 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 3009 fps | 99.5% |
| Norma 204 | <<locked>> | 88% | 53,867 psi | 84% | 3077 fps | 98.1% |
| Norma MRP | <<locked>> | 94% | 54,012 psi | 85% | 3166 fps | 99.4% |
| Norma URP | <<locked>> | 88% | 54,331 psi | 85% | 3081 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,652 psi | 89% | 3205 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 57,101 psi | 89% | 3143 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3136 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 2001 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,057 psi | 88% | 3058 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,493 psi | 90% | 3166 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,086 psi | 88% | 3123 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,230 psi | 85% | 3150 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3166 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 56,478 psi | 89% | 3054 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,476 psi | 85% | 3054 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 94% | 55,492 psi | 87% | 3120 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 55,245 psi | 87% | 3045 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,174 psi | 90% | 3068 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 57,435 psi | 90% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,172 psi | 86% | 3058 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,128 psi | 85% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,623 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,840 psi | 89% | 3022 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,027 psi | 86% | 3117 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 56,173 psi | 88% | 3048 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,188 psi | 88% | 3048 fps | 97% |
| Somchem S365 | <<locked>> | 90% | 54,534 psi | 85% | 3087 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,304 psi | 88% | 3097 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 57,232 psi | 90% | 3015 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,507 psi | 89% | 3081 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,622 psi | 87% | 3071 fps | 99% |
| Vihtavuori N550 | <<locked>> | 88% | 55,550 psi | 87% | 3077 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,493 psi | 90% | 3153 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,983 psi | 85% | 3153 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 3123 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,941 psi | 88% | 3035 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,143 psi | 85% | 3094 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,999 psi | 88% | 3261 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,246 psi | 88% | 3091 fps | 98.6% |
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 3100 | <<locked>> | 82% | 33,823 psi | 53% | 2635 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 42,554 psi | 67% | 2858 fps | 99.3% |
| Accurate High Country | <<locked>> | 88% | 44,991 psi | 71% | 2995 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 94% | 52,939 psi | 83% | 3136 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 50,792 psi | 80% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,497 psi | 68% | 2897 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 47,572 psi | 75% | 3012 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 37,840 psi | 59% | 2835 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 41,089 psi | 64% | 2838 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,880 psi | 81% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,712 psi | 64% | 2864 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,891 psi | 73% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 43,497 psi | 68% | 2894 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,350 psi | 65% | 2884 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,197 psi | 47% | 2598 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,198 psi | 50% | 2674 fps | 95.2% |
| Alliant Reloder-26 | 47.1 gr | 80% | 32,851 psi | 51% | 2730 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 43,642 psi | 68% | 2933 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 52,678 psi | 83% | 3002 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,700 psi | 68% | 2966 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 41,350 psi | 65% | 2884 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,803 psi | 72% | 2871 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 43,627 psi | 68% | 2917 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 52,576 psi | 82% | 3012 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,208 psi | 69% | 2904 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 47,050 psi | 74% | 2930 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 50,908 psi | 80% | 3018 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,937 psi | 78% | 3002 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,319 psi | 60% | 2743 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,814 psi | 64% | 2953 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 43,395 psi | 68% | 2917 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1752 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,403 psi | 84% | 2995 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,147 psi | 64% | 2785 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,195 psi | 74% | 2900 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 40,582 psi | 64% | 2802 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 49,269 psi | 77% | 2953 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 45,658 psi | 72% | 2982 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 53,824 psi | 84% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,585 psi | 70% | 2844 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 42,931 psi | 67% | 2828 fps | 97.5% |
| Lovex S071 | <<locked>> | 86% | 32,982 psi | 52% | 2612 fps | 95% |
| Norma 204 | <<locked>> | 82% | 43,845 psi | 69% | 2881 fps | 95.7% |
| Norma MRP | 48 gr | 84% | 37,855 psi | 59% | 2831 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,858 psi | 66% | 2844 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 45,513 psi | 71% | 2992 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 40,712 psi | 64% | 2831 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 40,553 psi | 64% | 2854 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,301 psi | 82% | 2992 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,763 psi | 78% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,453 psi | 67% | 2874 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,654 psi | 64% | 2881 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,811 psi | 59% | 2867 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 49,472 psi | 78% | 2943 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,020 psi | 71% | 2877 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 42,583 psi | 67% | 2874 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 45,803 psi | 72% | 2871 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,585 psi | 70% | 2844 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 53,824 psi | 84% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,931 psi | 67% | 2828 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,734 psi | 80% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,937 psi | 78% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,758 psi | 69% | 2785 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,235 psi | 66% | 2867 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 49,371 psi | 77% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,269 psi | 77% | 2927 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 38,508 psi | 60% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,985 psi | 60% | 2736 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 47,282 psi | 74% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,352 psi | 68% | 2844 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 40,089 psi | 63% | 2776 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 42,641 psi | 67% | 2841 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 33,823 psi | 53% | 2684 fps | 97.7% |
| Vihtavuori N560 | 52.5 gr | 92% | 50,183 psi | 79% | 3084 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 46,702 psi | 73% | 2995 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,337 psi | 66% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,469 psi | 70% | 2910 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,847 psi | 42% | 2582 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,728 psi | 67% | 2841 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 80 powders for .240 Weath. Mag. loaded with the .243 | 100gr | Hornady InterLock RN. Winchester StaBALL HD delivers the highest muzzle velocity at 3,261 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,261 fps. ADI AR 2225 gives the best case fill at 100 %, and 80 of the 80 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 100.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .240 Weath. Mag. with the .243 | 100gr | Hornady InterLock RN 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.