Load Specifications
Load data in caliber 6 mm Rem. with .243 | 100gr | Hornady InterLock bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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>> | 84% | 53,998 psi | 87% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,666 psi | 89% | 2933 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,834 psi | 78% | 2907 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 54,317 psi | 87% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,795 psi | 88% | 3028 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,896 psi | 86% | 2959 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,897 psi | 88% | 2959 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 3061 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,101 psi | 90% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,606 psi | 86% | 3081 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,679 psi | 88% | 2969 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,361 psi | 89% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,912 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,303 psi | 89% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,895 psi | 85% | 3054 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,158 psi | 88% | 3048 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,762 psi | 78% | 2986 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2930 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,103 psi | 64% | 2825 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 3123 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,722 psi | 86% | 2972 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 56,304 psi | 90% | 3002 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,762 psi | 78% | 2986 fps | 96% |
| Bofors RP7 | <<locked>> | 92% | 55,840 psi | 90% | 2979 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,970 psi | 90% | 2989 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,200 psi | 85% | 2959 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 53,301 psi | 85% | 3015 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 90% | 53,679 psi | 86% | 2979 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 54,520 psi | 87% | 2969 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,535 psi | 89% | 3005 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,085 psi | 87% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,751 psi | 86% | 3054 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 58% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,259 psi | 89% | 2966 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,694 psi | 88% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,273 psi | 87% | 2943 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,708 psi | 86% | 2917 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 56,391 psi | 90% | 3005 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,201 psi | 87% | 2953 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 55,230 psi | 89% | 3018 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,824 psi | 86% | 2986 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,101 psi | 90% | 2959 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,954 psi | 87% | 2930 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,086 psi | 90% | 2930 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,433 psi | 87% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,085 psi | 87% | 2949 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 55,042 psi | 88% | 2986 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,321 psi | 65% | 2743 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 55,811 psi | 89% | 2949 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,405 psi | 90% | 2949 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,158 psi | 88% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,824 psi | 86% | 3002 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 51,387 psi | 82% | 3068 fps | 98% |
| Norma URP | <<locked>> | 94% | 53,505 psi | 86% | 3012 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,811 psi | 89% | 3018 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,014 psi | 90% | 3064 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 56,318 psi | 90% | 2982 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,159 psi | 90% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 59% | 1900 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,214 psi | 85% | 2940 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,040 psi | 85% | 3022 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,275 psi | 90% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,505 psi | 87% | 3048 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,200 psi | 85% | 3071 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 53,200 psi | 85% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,101 psi | 90% | 2992 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 3031 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,840 psi | 90% | 2979 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,085 psi | 87% | 2949 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,954 psi | 87% | 2930 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,433 psi | 87% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,042 psi | 88% | 2986 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,447 psi | 87% | 3005 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,056 psi | 88% | 2959 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,724 psi | 89% | 2979 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,751 psi | 86% | 2838 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,201 psi | 87% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,056 psi | 87% | 2900 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,534 psi | 86% | 3025 fps | 97% |
| Somchem S335 | <<locked>> | 84% | 56,405 psi | 90% | 2877 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,665 psi | 88% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,318 psi | 90% | 2992 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,753 psi | 89% | 3064 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,042 psi | 88% | 3012 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 54,215 psi | 87% | 2822 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,272 psi | 85% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,519 psi | 86% | 2877 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,027 psi | 87% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,927 psi | 90% | 3009 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,369 psi | 76% | 2864 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 86% | 55,390 psi | 89% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,955 psi | 88% | 3012 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,184 psi | 82% | 3009 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,738 psi | 89% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,722 psi | 86% | 3025 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,118 psi | 66% | 2963 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,738 psi | 89% | 2989 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,459 psi | 83% | 2940 fps | 96.3% |
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% | 47,587 psi | 76% | 2779 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,759 psi | 73% | 2759 fps | 95.8% |
| Accurate 3100 | <<locked>> | 92% | 37,101 psi | 59% | 2671 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,049 psi | 72% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,808 psi | 54% | 2612 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 50,618 psi | 81% | 2904 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,888 psi | 69% | 2743 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 49,023 psi | 79% | 2940 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,692 psi | 84% | 2904 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,644 psi | 75% | 2953 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,285 psi | 82% | 2917 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,134 psi | 69% | 2772 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,180 psi | 74% | 2841 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,359 psi | 53% | 2618 fps | 95.9% |
| Alliant Reloder-17 | 37.8 gr | 80% | 37,478 psi | 60% | 2753 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,501 psi | 78% | 2933 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,658 psi | 73% | 2923 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,356 psi | 47% | 2526 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,637 psi | 60% | 2762 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,779 psi | 54% | 2710 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,067 psi | 80% | 2910 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 43,265 psi | 69% | 2782 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 45,658 psi | 73% | 2923 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 43,598 psi | 70% | 2753 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,156 psi | 84% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,497 psi | 70% | 2782 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 40,843 psi | 65% | 2776 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 47,282 psi | 76% | 2864 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 51,140 psi | 82% | 2913 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,922 psi | 50% | 2520 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,558 psi | 76% | 2890 fps | 100% |
| Hodgdon Superformance | 43 gr | 86% | 43,294 psi | 69% | 2854 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 43% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,660 psi | 78% | 2858 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 51,140 psi | 82% | 2894 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,092 psi | 72% | 2782 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,398 psi | 76% | 2805 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 43,816 psi | 70% | 2779 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,250 psi | 68% | 2726 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 32,532 psi | 52% | 2562 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 47,340 psi | 76% | 2871 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,692 psi | 84% | 2904 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,604 psi | 81% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,879 psi | 80% | 2828 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,281 psi | 73% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,318 psi | 60% | 2621 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 40,147 psi | 64% | 2703 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 37,942 psi | 61% | 2690 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,487 psi | 79% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,024 psi | 80% | 2851 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,542 psi | 73% | 2828 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 46,847 psi | 75% | 2877 fps | 95% |
| Norma MRP | <<locked>> | 94% | 41,843 psi | 67% | 2874 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,866 psi | 54% | 2612 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,397 psi | 73% | 2844 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 37,521 psi | 60% | 2707 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 52,620 psi | 84% | 2923 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,402 psi | 84% | 2936 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 44% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,787 psi | 70% | 2766 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,255 psi | 79% | 2956 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,856 psi | 64% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,431 psi | 54% | 2625 fps | 95.4% |
| ReloadSwiss RS 70 | 39.4 gr | 82% | 35,360 psi | 57% | 2690 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 47,166 psi | 76% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,654 psi | 65% | 2723 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 47,210 psi | 76% | 2907 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 43,598 psi | 70% | 2753 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,318 psi | 60% | 2621 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,604 psi | 81% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,281 psi | 73% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,147 psi | 64% | 2703 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,481 psi | 67% | 2772 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,314 psi | 82% | 2900 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,834 psi | 78% | 2867 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,372 psi | 81% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,337 psi | 68% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,394 psi | 66% | 2671 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,760 psi | 75% | 2904 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 50,198 psi | 80% | 2789 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,981 psi | 82% | 2887 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,176 psi | 66% | 2726 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 30,429 psi | 49% | 2562 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 42,119 psi | 68% | 2776 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 50,836 psi | 82% | 2772 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,978 psi | 75% | 2769 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,456 psi | 76% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,291 psi | 63% | 2657 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,244 psi | 57% | 2615 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 44,338 psi | 71% | 2805 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 45,585 psi | 73% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,577 psi | 55% | 2608 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 29,979 psi | 48% | 2549 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,606 psi | 55% | 2585 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 41,147 psi | 66% | 2782 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,804 psi | 45% | 2556 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,747 psi | 78% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,095 psi | 77% | 2881 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 113 powders for 6 mm Rem. loaded with the .243 | 100gr | Hornady InterLock. Alliant Reloder-26 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,123 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 6 mm Rem. with the .243 | 100gr | Hornady InterLock they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.