Load Specifications
Bullet:.243 | 105gr | Berger BT
Bullet Manufacturer:Berger
Bullet Weight:105 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:6 mm Rem. load data
Case Length (l3):2.223"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:54.4 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:9.0
Load data in caliber 6 mm Rem. with .243 | 105gr | Berger BT bullet and 97 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% | 54,375 psi | 87% | 2805 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,028 psi | 90% | 2867 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,965 psi | 79% | 2838 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 54,839 psi | 88% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,100 psi | 88% | 2959 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,476 psi | 86% | 3035 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 82% | 54,288 psi | 87% | 2887 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,056 psi | 88% | 2887 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,405 psi | 90% | 2995 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,027 psi | 87% | 3009 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,086 psi | 90% | 2989 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,564 psi | 89% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,115 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,927 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,534 psi | 86% | 2989 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2982 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2917 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,238 psi | 74% | 2867 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,466 psi | 65% | 2772 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,576 psi | 84% | 3051 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,012 psi | 87% | 2904 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 52,968 psi | 85% | 2877 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2917 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 56,217 psi | 90% | 2910 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,231 psi | 90% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,534 psi | 86% | 2890 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 53,969 psi | 87% | 2956 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 54,114 psi | 87% | 2913 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 82% | 54,868 psi | 88% | 2897 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,869 psi | 90% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,810 psi | 88% | 2933 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,983 psi | 87% | 2989 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 58% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,738 psi | 89% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,984 psi | 88% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,723 psi | 88% | 2871 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,201 psi | 87% | 2854 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 53,505 psi | 86% | 2887 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,520 psi | 87% | 2887 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 55,521 psi | 89% | 2949 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 53,969 psi | 87% | 2910 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,970 psi | 90% | 2923 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 82% | 54,128 psi | 87% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,420 psi | 90% | 2861 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,897 psi | 88% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,099 psi | 87% | 2877 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,593 psi | 89% | 2923 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,596 psi | 65% | 2684 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 56,173 psi | 90% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,664 psi | 86% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,390 psi | 89% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,824 psi | 86% | 2930 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 51,721 psi | 83% | 3005 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 54,085 psi | 87% | 2946 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 56,318 psi | 90% | 2949 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,115 psi | 90% | 2995 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 59% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,577 psi | 86% | 2874 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,214 psi | 85% | 2946 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,200 psi | 85% | 2986 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,984 psi | 88% | 2982 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,722 psi | 86% | 3009 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,505 psi | 86% | 2831 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,214 psi | 85% | 2874 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,375 psi | 87% | 2907 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 2966 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 56,217 psi | 90% | 2910 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,099 psi | 87% | 2877 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,128 psi | 87% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,897 psi | 88% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,593 psi | 89% | 2923 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,491 psi | 87% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,405 psi | 89% | 2890 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,956 psi | 90% | 2910 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,882 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,665 psi | 88% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,114 psi | 87% | 2831 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,012 psi | 87% | 2959 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 53,635 psi | 86% | 2766 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,969 psi | 88% | 2877 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,055 psi | 85% | 2867 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,260 psi | 90% | 2995 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2943 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 54,360 psi | 87% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,505 psi | 86% | 2792 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,969 psi | 87% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,375 psi | 87% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,188 psi | 90% | 2936 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,514 psi | 76% | 2799 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 86% | 55,637 psi | 89% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,274 psi | 89% | 2943 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2946 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,912 psi | 90% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,969 psi | 87% | 2956 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,365 psi | 66% | 2900 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,057 psi | 90% | 2917 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2877 fps | 96.7% |
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% | 47,834 psi | 77% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,137 psi | 74% | 2697 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 37,246 psi | 60% | 2612 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,266 psi | 73% | 2713 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,084 psi | 55% | 2556 fps | 96.5% |
| Accurate High Country | <<locked>> | 98% | 49,850 psi | 80% | 2969 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 50,908 psi | 82% | 2835 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,337 psi | 69% | 2684 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 46,441 psi | 74% | 2822 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,166 psi | 76% | 2890 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,325 psi | 74% | 2818 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,366 psi | 70% | 2707 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,441 psi | 74% | 2776 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,750 psi | 54% | 2566 fps | 96.6% |
| Alliant Reloder-17 | 36.7 gr | 80% | 37,840 psi | 61% | 2694 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,730 psi | 73% | 2808 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,730 psi | 73% | 2858 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,746 psi | 44% | 2421 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,534 psi | 57% | 2648 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,229 psi | 55% | 2664 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,285 psi | 81% | 2841 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,569 psi | 70% | 2717 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,730 psi | 73% | 2858 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 41,147 psi | 66% | 2635 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,663 psi | 84% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,816 psi | 70% | 2720 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 38,653 psi | 62% | 2661 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 44,483 psi | 71% | 2740 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 51,430 psi | 82% | 2844 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,038 psi | 50% | 2461 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,630 psi | 76% | 2822 fps | 100% |
| Hodgdon Superformance | 40.7 gr | 84% | 40,451 psi | 65% | 2726 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 43% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,255 psi | 79% | 2795 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,721 psi | 83% | 2825 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,571 psi | 73% | 2720 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,645 psi | 76% | 2740 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 41,568 psi | 67% | 2667 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,103 psi | 64% | 2615 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 32,764 psi | 53% | 2507 fps | 96.1% |
| IMR 4895 | <<locked>> | 80% | 47,645 psi | 76% | 2805 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,475 psi | 84% | 2864 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 50,618 psi | 81% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,966 psi | 80% | 2759 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,426 psi | 73% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,463 psi | 60% | 2559 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 38,174 psi | 61% | 2595 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 35,839 psi | 57% | 2582 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 49,661 psi | 80% | 2779 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,227 psi | 81% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,818 psi | 73% | 2762 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,021 psi | 75% | 2812 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 39,465 psi | 63% | 2756 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 34,084 psi | 55% | 2552 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 45,905 psi | 74% | 2782 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 37,710 psi | 60% | 2648 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 44% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,150 psi | 71% | 2703 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,661 psi | 80% | 2887 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,263 psi | 65% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,518 psi | 54% | 2562 fps | 95.9% |
| ReloadSwiss RS 70 | 38.2 gr | 82% | 35,549 psi | 57% | 2631 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 47,253 psi | 76% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,901 psi | 66% | 2661 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,256 psi | 82% | 2854 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 44,657 psi | 72% | 2792 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 41,147 psi | 66% | 2635 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,463 psi | 60% | 2559 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,618 psi | 81% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,426 psi | 73% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,174 psi | 61% | 2595 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,858 psi | 67% | 2710 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,517 psi | 83% | 2828 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,197 psi | 79% | 2802 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,749 psi | 81% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,699 psi | 68% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,117 psi | 63% | 2556 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,222 psi | 71% | 2785 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,357 psi | 81% | 2717 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,169 psi | 82% | 2818 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,350 psi | 66% | 2661 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,676 psi | 49% | 2507 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 42,612 psi | 68% | 2720 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,242 psi | 82% | 2707 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,398 psi | 76% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,659 psi | 76% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,465 psi | 63% | 2592 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,505 psi | 57% | 2556 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 44,367 psi | 71% | 2743 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 45,847 psi | 74% | 2703 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,867 psi | 56% | 2552 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 30,313 psi | 49% | 2500 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,751 psi | 56% | 2523 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 38,653 psi | 62% | 2661 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,876 psi | 45% | 2507 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,197 psi | 79% | 2808 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,933 psi | 72% | 2756 fps | 95% |
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 97 powders for 6 mm Rem. loaded with the .243 | 105gr | Berger BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,051 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 105.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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 | 105gr | Berger 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.