Load Specifications
Load data in caliber .243 Win. with .243 | 90gr | Impala RNFP KO bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 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 2495 | <<locked>> | 82% | 53,621 psi | 89% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,751 psi | 89% | 2913 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,923 psi | 85% | 2943 fps | 98.3% |
| Accurate 4064 | <<locked>> | 84% | 53,461 psi | 89% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,171 psi | 88% | 3015 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 86% | 52,634 psi | 87% | 2946 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 98% | 53,650 psi | 89% | 3028 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,010 psi | 85% | 3054 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,417 psi | 89% | 3025 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,374 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,519 psi | 89% | 2992 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,185 psi | 88% | 3064 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,114 psi | 90% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,736 psi | 88% | 3015 fps | 96.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 3012 fps | 95.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,572 psi | 79% | 2969 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,945 psi | 70% | 2871 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,331 psi | 90% | 3156 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,360 psi | 90% | 2992 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 3012 fps | 95.8% |
| Bofors RP7 | <<locked>> | 90% | 54,070 psi | 90% | 2963 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 84% | 51,242 psi | 85% | 2943 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 90% | 51,256 psi | 85% | 2992 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 88% | 51,285 psi | 85% | 2953 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,534 psi | 89% | 2989 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,025 psi | 86% | 2989 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,227 psi | 85% | 3015 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 60% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,881 psi | 88% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,040 psi | 86% | 2930 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,547 psi | 86% | 2900 fps | 97.4% |
| IMR 4350 | <<locked>> | 94% | 54,041 psi | 90% | 2976 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,764 psi | 86% | 2927 fps | 97.4% |
| IMR 4831 | <<locked>> | 94% | 53,272 psi | 89% | 2999 fps | 99.7% |
| IMR 4895 | <<locked>> | 82% | 51,576 psi | 86% | 2969 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 53,954 psi | 90% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,649 psi | 87% | 2933 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,243 psi | 87% | 2933 fps | 98.7% |
| Lovex S070 | <<locked>> | 92% | 53,272 psi | 89% | 2969 fps | 98% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,728 psi | 71% | 2799 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 54,389 psi | 90% | 2953 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,895 psi | 88% | 2979 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 53,301 psi | 89% | 3104 fps | 98% |
| Norma URP | <<locked>> | 92% | 51,416 psi | 85% | 2992 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 84% | 53,432 psi | 89% | 2999 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 53,534 psi | 89% | 3035 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 61% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,184 psi | 85% | 2920 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,853 psi | 89% | 3058 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,737 psi | 89% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,344 psi | 87% | 3025 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 50,908 psi | 85% | 3041 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 51,561 psi | 86% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 51,227 psi | 85% | 2936 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 51,996 psi | 86% | 3002 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 90% | 54,070 psi | 90% | 2963 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,243 psi | 87% | 2933 fps | 98.7% |
| Shooters World Precision | <<locked>> | 84% | 52,649 psi | 87% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,272 psi | 89% | 2969 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,141 psi | 87% | 2986 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,243 psi | 88% | 2963 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,909 psi | 86% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,185 psi | 87% | 2881 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,517 psi | 86% | 2995 fps | 96.1% |
| Somchem S355 | <<locked>> | 86% | 51,271 psi | 85% | 2933 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,563 psi | 89% | 3051 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,026 psi | 88% | 2982 fps | 97.3% |
| Vihtavuori N135 | <<locked>> | 82% | 51,576 psi | 86% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,837 psi | 86% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,272 psi | 87% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,664 psi | 89% | 2986 fps | 99.6% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,704 psi | 81% | 2890 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 84% | 53,200 psi | 88% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,142 psi | 88% | 2995 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,229 psi | 88% | 3051 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,345 psi | 89% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 51,619 psi | 86% | 2999 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,265 psi | 72% | 3009 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,316 psi | 89% | 2969 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2966 fps | 96.1% |
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% | 50,357 psi | 84% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,195 psi | 78% | 2799 fps | 95.6% |
| Accurate 3100 | <<locked>> | 92% | 39,450 psi | 66% | 2730 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,529 psi | 79% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,940 psi | 60% | 2680 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 80% | 43,918 psi | 73% | 2792 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 50,285 psi | 84% | 2969 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,848 psi | 79% | 2995 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 50,517 psi | 84% | 2976 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,570 psi | 74% | 2825 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,572 psi | 79% | 2890 fps | 99.3% |
| Alliant Reloder-16 | 34.5 gr | 80% | 34,737 psi | 58% | 2674 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,044 psi | 65% | 2805 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,908 psi | 83% | 2966 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,065 psi | 78% | 2953 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,399 psi | 49% | 2539 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,144 psi | 62% | 2753 fps | 95.1% |
| Alliant Reloder-26 | 41.9 gr | 88% | 35,853 psi | 60% | 2772 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 44,889 psi | 75% | 2835 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 47,065 psi | 78% | 2953 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 44,875 psi | 75% | 2795 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,179 psi | 75% | 2831 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 42,366 psi | 70% | 2822 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 48,182 psi | 80% | 2894 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,474 psi | 54% | 2579 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,486 psi | 81% | 2930 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,802 psi | 74% | 2894 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 45% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,617 psi | 82% | 2900 fps | 99.9% |
| IMR 4064 | <<locked>> | 80% | 46,166 psi | 77% | 2825 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,486 psi | 81% | 2844 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 45,208 psi | 75% | 2822 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,395 psi | 72% | 2769 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 34,360 psi | 57% | 2628 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 48,747 psi | 81% | 2920 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 50,749 psi | 84% | 2871 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 46,833 psi | 78% | 2838 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 39,015 psi | 65% | 2677 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,930 psi | 70% | 2759 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 40,306 psi | 67% | 2749 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 51,068 psi | 85% | 2900 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,978 psi | 78% | 2877 fps | 99.5% |
| Norma MRP | <<locked>> | 94% | 43,685 psi | 73% | 2920 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,447 psi | 59% | 2671 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 46,804 psi | 78% | 2890 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,914 psi | 65% | 2753 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 46% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,281 psi | 75% | 2812 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,473 psi | 84% | 3002 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,321 psi | 69% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,302 psi | 59% | 2687 fps | 95.6% |
| ReloadSwiss RS 70 | 38.7 gr | 82% | 36,811 psi | 61% | 2736 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,791 psi | 81% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,583 psi | 71% | 2782 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 48,660 psi | 81% | 2946 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 44,875 psi | 75% | 2795 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,015 psi | 65% | 2677 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 46,833 psi | 78% | 2838 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,930 psi | 70% | 2759 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,859 psi | 71% | 2822 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,082 psi | 83% | 2910 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,439 psi | 72% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,221 psi | 72% | 2720 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,196 psi | 80% | 2936 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 42,815 psi | 71% | 2782 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 32,213 psi | 54% | 2628 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 43,903 psi | 73% | 2822 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 48,312 psi | 80% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,660 psi | 81% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,857 psi | 68% | 2710 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,796 psi | 61% | 2667 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 45,701 psi | 76% | 2838 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 47,050 psi | 78% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,347 psi | 60% | 2667 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 32,082 psi | 53% | 2625 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,216 psi | 60% | 2635 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 42,366 psi | 70% | 2822 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,834 psi | 50% | 2628 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,067 psi | 83% | 2920 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,443 psi | 82% | 2907 fps | 95.3% |
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 .243 Win. loaded with the .243 | 90gr | Impala RNFP KO. Alliant Reloder-26 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,156 fps. Accurate 3100 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 (415 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .243 Win. with the .243 | 90gr | Impala RNFP KO 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.