Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 95gr | ShellHouse Castings SP Hard Cast bullet and 100 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-16 and Hodgdon Superformance.
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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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% | 55,898 psi | 88% | 3028 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,333 psi | 88% | 3068 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 3084 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 56,463 psi | 88% | 3091 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,447 psi | 85% | 3150 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 56,275 psi | 88% | 3130 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,375 psi | 85% | 3084 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,202 psi | 88% | 3199 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3189 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,740 psi | 90% | 3274 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,955 psi | 86% | 3107 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,853 psi | 86% | 3123 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,622 psi | 87% | 3215 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,276 psi | 90% | 3241 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,506 psi | 87% | 3186 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 3179 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 3110 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,757 psi | 67% | 3009 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 3323 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,594 psi | 89% | 3150 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,138 psi | 75% | 3091 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 55,535 psi | 87% | 3120 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 3179 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 55,143 psi | 86% | 3104 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 55,912 psi | 88% | 3136 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 57,174 psi | 90% | 3209 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 57,159 psi | 90% | 3173 fps | 98.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3176 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 56,942 psi | 89% | 3140 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,883 psi | 88% | 3133 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,824 psi | 84% | 3120 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,867 psi | 84% | 3182 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,926 psi | 56% | 1969 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,737 psi | 86% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,261 psi | 90% | 3123 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,507 psi | 89% | 3104 fps | 99% |
| IMR 4350 | <<locked>> | 94% | 56,231 psi | 88% | 3136 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,145 psi | 90% | 3136 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 55,114 psi | 86% | 3143 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,333 psi | 88% | 3156 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,593 psi | 87% | 3123 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 82% | 56,594 psi | 89% | 3097 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,376 psi | 87% | 3054 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,116 psi | 90% | 3110 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,608 psi | 89% | 3123 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 54,694 psi | 86% | 3114 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2907 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 54,665 psi | 86% | 3064 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,564 psi | 87% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,114 psi | 85% | 3107 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,522 psi | 90% | 3196 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 56,318 psi | 88% | 3278 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 57,290 psi | 90% | 3196 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,477 psi | 87% | 3143 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,202 psi | 88% | 3196 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,730 psi | 72% | 3022 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 57% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,318 psi | 88% | 3123 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,217 psi | 88% | 3199 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,666 psi | 89% | 3235 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,853 psi | 86% | 3176 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,638 psi | 90% | 3274 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,376 psi | 87% | 3068 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,405 psi | 87% | 3114 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,041 psi | 85% | 3104 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,520 psi | 85% | 3166 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 55,143 psi | 86% | 3104 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,608 psi | 89% | 3123 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,594 psi | 89% | 3097 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,116 psi | 90% | 3110 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,694 psi | 86% | 3114 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,867 psi | 84% | 3120 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,740 psi | 90% | 3136 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,955 psi | 86% | 3100 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,753 psi | 87% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,811 psi | 89% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,782 psi | 89% | 3081 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,041 psi | 85% | 3163 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 55,361 psi | 87% | 2992 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,522 psi | 90% | 3120 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,434 psi | 87% | 3107 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,144 psi | 88% | 3100 fps | 95.9% |
| Somchem S365 | <<locked>> | 96% | 56,681 psi | 89% | 3199 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,897 psi | 86% | 3136 fps | 98.5% |
| Unknown powder | <<locked>> | 90% | 54,012 psi | 85% | 3140 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 56,376 psi | 88% | 2982 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,869 psi | 88% | 3028 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,507 psi | 89% | 3045 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,029 psi | 89% | 3084 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,840 psi | 88% | 3136 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 3048 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 54,578 psi | 86% | 3038 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,708 psi | 86% | 3136 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 3189 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 3261 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,796 psi | 87% | 3100 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,566 psi | 90% | 3215 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,512 psi | 70% | 3159 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,013 psi | 86% | 3104 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 3136 fps | 97.7% |
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% | 48,820 psi | 77% | 2923 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,859 psi | 67% | 2818 fps | 95.6% |
| Accurate 3100 | <<locked>> | 90% | 36,187 psi | 57% | 2759 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,325 psi | 73% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,114 psi | 55% | 2756 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,823 psi | 83% | 3074 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,846 psi | 70% | 2910 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 45,716 psi | 72% | 3002 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 50,111 psi | 79% | 3114 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,777 psi | 78% | 3136 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,933 psi | 70% | 2930 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,225 psi | 76% | 3009 fps | 99.8% |
| Alliant Reloder-16 | 40.3 gr | 80% | 34,809 psi | 55% | 2779 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,639 psi | 62% | 2917 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,339 psi | 71% | 2992 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,672 psi | 72% | 3041 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,514 psi | 45% | 2608 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,867 psi | 55% | 2805 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 86% | 33,286 psi | 52% | 2805 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,794 psi | 83% | 3087 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,686 psi | 70% | 3018 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 44,846 psi | 70% | 2933 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,672 psi | 72% | 3041 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 42,293 psi | 66% | 2854 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 45,629 psi | 72% | 2949 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 40,335 psi | 63% | 2881 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 43,671 psi | 68% | 2917 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,663 psi | 83% | 3107 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,432 psi | 84% | 3084 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,068 psi | 50% | 2657 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,111 psi | 79% | 3058 fps | 100% |
| Hodgdon Superformance | 48.2 gr | 84% | 42,815 psi | 67% | 2969 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 42% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,039 psi | 80% | 3028 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,166 psi | 74% | 2949 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,530 psi | 78% | 2979 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 40,611 psi | 64% | 2831 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,408 psi | 65% | 2835 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 33,924 psi | 53% | 2710 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 49,501 psi | 78% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,199 psi | 82% | 3061 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 52,620 psi | 82% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,677 psi | 81% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,789 psi | 73% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,537 psi | 60% | 2769 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 39,088 psi | 61% | 2802 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 37,231 psi | 58% | 2785 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,256 psi | 80% | 3009 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,098 psi | 82% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,572 psi | 75% | 2992 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,514 psi | 73% | 2995 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 41,640 psi | 65% | 2986 fps | 96% |
| Norma URP | <<locked>> | 80% | 35,259 psi | 55% | 2759 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,124 psi | 75% | 3015 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 36,912 psi | 58% | 2805 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 42,293 psi | 66% | 2946 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,687 psi | 72% | 2930 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,214 psi | 82% | 3133 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,264 psi | 66% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,259 psi | 55% | 2776 fps | 96.4% |
| ReloadSwiss RS 70 | 44.1 gr | 80% | 34,505 psi | 54% | 2782 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 48,660 psi | 76% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,047 psi | 66% | 2871 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 50,604 psi | 79% | 3041 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 44,135 psi | 69% | 2969 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 42,293 psi | 66% | 2854 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,537 psi | 60% | 2769 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,620 psi | 82% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,789 psi | 73% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,088 psi | 61% | 2802 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,743 psi | 69% | 2936 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,780 psi | 84% | 3074 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,271 psi | 80% | 3038 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,214 psi | 82% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,961 psi | 69% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,350 psi | 63% | 2772 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,743 psi | 69% | 2963 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 52,011 psi | 82% | 2943 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,650 psi | 84% | 3061 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,743 psi | 67% | 2881 fps | 99.7% |
| Somchem S361 | <<locked>> | 94% | 52,359 psi | 82% | 3035 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 31,575 psi | 49% | 2700 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 41,872 psi | 66% | 2887 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 38,421 psi | 60% | 2828 fps | 97% |
| Vihtavuori N133 | <<locked>> | 80% | 52,881 psi | 83% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,892 psi | 77% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,371 psi | 77% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,712 psi | 64% | 2802 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,854 psi | 58% | 2766 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 44,106 psi | 69% | 2923 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 47,790 psi | 75% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,245 psi | 57% | 2762 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 84% | 31,473 psi | 49% | 2690 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 52,620 psi | 82% | 3192 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,143 psi | 57% | 2733 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 40,596 psi | 64% | 2887 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,774 psi | 42% | 2628 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,285 psi | 80% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,556 psi | 70% | 2936 fps | 95.1% |
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 100 powders for .240 Weath. Mag. loaded with the .243 | 95gr | ShellHouse Castings SP Hard Cast. Alliant Reloder-26 delivers the highest muzzle velocity at 3,323 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,323 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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-16, Hodgdon Superformance rank at the top here: for .240 Weath. Mag. with the .243 | 95gr | ShellHouse Castings SP Hard Cast 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.