Load Specifications
Load data in caliber .243 Win. with .243 | 85gr | Barnes X BT bullet and 81 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 Somchem S365.
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>> | 82% | 52,924 psi | 88% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,186 psi | 90% | 2976 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,488 psi | 84% | 3005 fps | 97.9% |
| Accurate 4064 | <<locked>> | 84% | 52,997 psi | 88% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,141 psi | 87% | 3074 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 82% | 54,389 psi | 90% | 3068 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 51,851 psi | 86% | 3009 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,027 psi | 90% | 3182 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,881 psi | 88% | 3045 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,026 psi | 88% | 3061 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,315 psi | 87% | 3123 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,432 psi | 89% | 3156 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,876 psi | 78% | 3028 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,365 psi | 69% | 2920 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,432 psi | 89% | 3212 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,911 psi | 90% | 3071 fps | 99.5% |
| Bofors RP3 | <<locked>> | 86% | 53,708 psi | 89% | 3061 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 53,345 psi | 89% | 3022 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 86% | 53,940 psi | 90% | 3061 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 88% | 51,793 psi | 86% | 3074 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 92% | 52,344 psi | 87% | 3041 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,591 psi | 87% | 3051 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 51,401 psi | 85% | 3054 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,433 psi | 90% | 3140 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 60% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 51,445 psi | 85% | 3009 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 53,809 psi | 89% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,201 psi | 90% | 3038 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,258 psi | 88% | 3002 fps | 97.4% |
| IMR 4350 | <<locked>> | 94% | 53,563 psi | 89% | 3041 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,375 psi | 90% | 3045 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 53,432 psi | 89% | 3077 fps | 99.5% |
| IMR 4895 | <<locked>> | 84% | 54,375 psi | 90% | 3094 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 53,345 psi | 89% | 2989 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 51,895 psi | 86% | 2999 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 51,648 psi | 86% | 2995 fps | 98.3% |
| Lovex S070 | <<locked>> | 92% | 52,895 psi | 88% | 3035 fps | 97.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,148 psi | 70% | 2854 fps | 95.9% |
| Norma 201 | <<locked>> | 82% | 53,693 psi | 89% | 3018 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,896 psi | 90% | 3015 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,402 psi | 87% | 3048 fps | 99.8% |
| Norma 204 | <<locked>> | 94% | 54,041 psi | 90% | 3087 fps | 95.8% |
| Norma MRPᴾ | <<locked>> | 100% | 52,257 psi | 87% | 3156 fps | 97.4% |
| Norma URP | <<locked>> | 94% | 54,273 psi | 90% | 3114 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 84% | 52,634 psi | 87% | 3064 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 94% | 52,794 psi | 88% | 3097 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 61% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,070 psi | 90% | 3041 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,272 psi | 89% | 3123 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,214 psi | 88% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 51,605 psi | 86% | 3084 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,853 psi | 89% | 3163 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 84% | 54,128 psi | 90% | 3015 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,882 psi | 90% | 3054 fps | 100% |
| Rottweil R 907 | <<locked>> | 90% | 53,345 psi | 89% | 3022 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 51,648 psi | 86% | 2995 fps | 98.3% |
| Shooters World Precision | <<locked>> | 84% | 51,895 psi | 86% | 2999 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,895 psi | 88% | 3035 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,459 psi | 85% | 3051 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,736 psi | 88% | 3031 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,911 psi | 90% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,619 psi | 86% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,459 psi | 85% | 2940 fps | 97.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,201 psi | 90% | 3114 fps | 96.3% |
| Somchem S335 | <<locked>> | 82% | 54,114 psi | 90% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,592 psi | 89% | 3048 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 52,779 psi | 88% | 3114 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,301 psi | 87% | 3041 fps | 96.8% |
| Unknown powder | <<locked>> | 90% | 51,314 psi | 85% | 3058 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 53,722 psi | 89% | 2930 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,853 psi | 89% | 2982 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,330 psi | 89% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,011 psi | 86% | 2982 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 51,996 psi | 86% | 3028 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 84% | 53,374 psi | 89% | 3009 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,489 psi | 87% | 3081 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,359 psi | 87% | 3114 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,692 psi | 88% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,793 psi | 86% | 3074 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,496 psi | 71% | 3058 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,230 psi | 90% | 3058 fps | 96% |
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% | 49,690 psi | 83% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 47,688 psi | 79% | 2864 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 41,249 psi | 69% | 2835 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 46,920 psi | 78% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,302 psi | 59% | 2733 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 51,184 psi | 85% | 3015 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 43,453 psi | 72% | 2851 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,978 psi | 78% | 3054 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,947 psi | 73% | 2887 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,905 psi | 78% | 2953 fps | 99% |
| Alliant Reloder-16 | 35.4 gr | 80% | 34,258 psi | 57% | 2726 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,348 psi | 64% | 2858 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,690 psi | 51% | 2641 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,957 psi | 65% | 2861 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,840 psi | 63% | 2887 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,473 psi | 84% | 3012 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 44,512 psi | 74% | 2900 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 47,268 psi | 79% | 2913 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 44,831 psi | 74% | 2897 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 84% | 45,455 psi | 76% | 2956 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 90% | 49,298 psi | 82% | 2986 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,053 psi | 53% | 2631 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,353 psi | 75% | 2949 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 47,108 psi | 78% | 3005 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 45% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,759 psi | 76% | 2907 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 47,645 psi | 79% | 2953 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,612 psi | 71% | 2828 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,788 psi | 74% | 2844 fps | 95.3% |
| IMR 4350 | <<locked>> | 90% | 47,471 psi | 79% | 2933 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,513 psi | 76% | 2881 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 35,012 psi | 58% | 2710 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 48,066 psi | 80% | 2986 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 50,256 psi | 83% | 2940 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 46,267 psi | 77% | 2900 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 40,901 psi | 68% | 2785 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 44,135 psi | 73% | 2871 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 39,494 psi | 66% | 2795 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,531 psi | 84% | 2969 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,691 psi | 84% | 2966 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,354 psi | 77% | 2940 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 50,691 psi | 84% | 3028 fps | 95% |
| Norma MRP | <<locked>> | 96% | 45,774 psi | 76% | 3031 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,896 psi | 58% | 2723 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,905 psi | 76% | 2946 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 41,089 psi | 68% | 2871 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 46% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,599 psi | 74% | 2867 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,588 psi | 82% | 3061 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,582 psi | 67% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 37,072 psi | 62% | 2795 fps | 95.7% |
| ReloadSwiss RS 70 | 40.7 gr | 84% | 38,870 psi | 65% | 2854 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 48,240 psi | 80% | 2920 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,959 psi | 70% | 2841 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 47,268 psi | 79% | 2913 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,901 psi | 68% | 2785 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 46,267 psi | 77% | 2900 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 44,135 psi | 73% | 2871 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,177 psi | 70% | 2877 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,313 psi | 82% | 2972 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,952 psi | 85% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,033 psi | 71% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,513 psi | 76% | 2831 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 50,792 psi | 84% | 3054 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 50,995 psi | 85% | 2904 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,279 psi | 70% | 2841 fps | 98.9% |
| Somchem S365 | 36.2 gr | 80% | 31,705 psi | 53% | 2680 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 46,166 psi | 77% | 2930 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 37,507 psi | 62% | 2779 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 48,080 psi | 80% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,805 psi | 79% | 2890 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,485 psi | 79% | 2887 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,260 psi | 60% | 2684 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,449 psi | 62% | 2746 fps | 96% |
| Vihtavuori N540 | <<locked>> | 80% | 47,282 psi | 79% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,392 psi | 64% | 2802 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 86% | 33,489 psi | 56% | 2726 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,592 psi | 59% | 2684 fps | 97.8% |
| Winchester 760 | <<locked>> | 84% | 45,455 psi | 76% | 2956 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,385 psi | 49% | 2667 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 96% | 50,415 psi | 84% | 2992 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 81 powders for .243 Win. loaded with the .243 | 85gr | Barnes X BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,212 fps. Accurate 3100 gives the best case fill at 100 %, and 81 of the 81 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 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-16, ReloadSwiss RS 70, Somchem S365 rank at the top here: for .243 Win. with the .243 | 85gr | Barnes X BT 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.