Load Specifications
Load data in caliber 6 mm B.R. Norma with .243 | 70gr | Speer TNT bullet and 56 powders. The key underlying parameters are shown in the table above.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 51,517 psi | 88% | 3087 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,127 psi | 89% | 3179 fps | 99.9% |
| Accurate 2460 | <<locked>> | 94% | 51,082 psi | 87% | 3186 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,034 psi | 75% | 3104 fps | 99.6% |
| Accurate 2520 | <<locked>> | 98% | 51,561 psi | 88% | 3235 fps | 98.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,886 psi | 70% | 3061 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 90% | 52,315 psi | 89% | 3104 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 90% | 52,750 psi | 90% | 3117 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 88% | 52,301 psi | 89% | 3156 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 50,531 psi | 86% | 3212 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 98% | 51,488 psi | 88% | 3192 fps | 96.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,822 psi | 88% | 3271 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 51,648 psi | 88% | 3301 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 52,736 psi | 90% | 3215 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 50,778 psi | 86% | 3117 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 50,604 psi | 86% | 3084 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 96% | 51,474 psi | 88% | 3146 fps | 97% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 52,953 psi | 90% | 3278 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 94% | 52,141 psi | 89% | 3238 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 92% | 49,966 psi | 85% | 3199 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 86% | 50,778 psi | 86% | 3100 fps | 99% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 52,112 psi | 89% | 3245 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,314 psi | 55% | 1965 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,371 psi | 84% | 3255 fps | 99.6% |
| IMR 4198 | <<locked>> | 92% | 50,792 psi | 86% | 3136 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 50,662 psi | 86% | 3064 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 51,488 psi | 88% | 3192 fps | 96.4% |
| Lovex D073.4 | <<locked>> | 88% | 51,648 psi | 88% | 3209 fps | 98% |
| Lovex D073.5 | <<locked>> | 94% | 51,271 psi | 87% | 3186 fps | 97.4% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 48,820 psi | 83% | 3199 fps | 97.7% |
| Lovex S053 | <<locked>> | 84% | 52,533 psi | 89% | 3058 fps | 100% |
| Norma 200 | <<locked>> | 90% | 52,982 psi | 90% | 3196 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,430 psi | 86% | 3176 fps | 96.3% |
| Norma 202ᴾ | <<locked>> | 100% | 49,937 psi | 85% | 3196 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,213 psi | 55% | 2008 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,126 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 51,663 psi | 88% | 3202 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 98% | 51,082 psi | 87% | 3182 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 88% | 51,648 psi | 88% | 3209 fps | 98% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 48,820 psi | 83% | 3199 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 52,649 psi | 90% | 3163 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,142 psi | 90% | 2894 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 50,966 psi | 87% | 3209 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 50,720 psi | 86% | 3179 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 50,488 psi | 86% | 3104 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,033 psi | 73% | 2976 fps | 98.1% |
| Somchem S321 | <<locked>> | 96% | 52,765 psi | 90% | 3238 fps | 97% |
| Somchem S335ᴾ | <<locked>> | 100% | 52,156 psi | 89% | 3153 fps | 99.3% |
| Vihtavuori N120 | <<locked>> | 88% | 52,330 psi | 89% | 3104 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 50,401 psi | 86% | 3107 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 52,765 psi | 90% | 3153 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,686 psi | 76% | 3107 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,413 psi | 81% | 3117 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 98% | 52,504 psi | 89% | 3202 fps | 96.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,166 psi | 79% | 3107 fps | 97.7% |
| Winchester 748 | <<locked>> | 98% | 50,198 psi | 85% | 3235 fps | 97.2% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 44,860 psi | 76% | 2969 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 29,559 psi | 50% | 2690 fps | 95.7% |
| Accurate 2460 | <<locked>> | 86% | 38,769 psi | 66% | 2943 fps | 95.7% |
| Accurate 2495 | <<locked>> | 86% | 27,340 psi | 47% | 2697 fps | 95.2% |
| Accurate 2520 | <<locked>> | 90% | 38,899 psi | 66% | 2982 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 35,665 psi | 61% | 2940 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 38,508 psi | 66% | 2831 fps | 97.2% |
| Accurate LT-32 | <<locked>> | 80% | 38,827 psi | 66% | 2838 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 40,799 psi | 69% | 2956 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,027 psi | 61% | 2904 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 96% | 48,530 psi | 83% | 3136 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 27,180 psi | 46% | 2700 fps | 97.4% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 48,559 psi | 83% | 3245 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,229 psi | 58% | 2838 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,989 psi | 71% | 2956 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,825 psi | 63% | 2808 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 92% | 45,455 psi | 77% | 3031 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 94% | 42,743 psi | 73% | 3084 fps | 95% |
| Hodgdon H322 | <<locked>> | 82% | 34,940 psi | 59% | 2874 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 84% | 38,189 psi | 65% | 2953 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 42,395 psi | 72% | 2936 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 98% | 48,602 psi | 83% | 3179 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,033 psi | 41% | 1765 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 31,328 psi | 53% | 2835 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 35,839 psi | 61% | 2838 fps | 99.3% |
| IMR 4227 | <<locked>> | 80% | 47,572 psi | 81% | 3012 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 48,530 psi | 83% | 3136 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 82% | 42,032 psi | 72% | 3018 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 88% | 41,800 psi | 71% | 3005 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 94% | 39,972 psi | 68% | 3018 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 46,992 psi | 80% | 2966 fps | 100% |
| Norma 200 | <<locked>> | 80% | 38,798 psi | 66% | 2927 fps | 99.6% |
| Norma 201 | <<locked>> | 98% | 47,065 psi | 80% | 3110 fps | 95.5% |
| Norma 202 | <<locked>> | 90% | 36,506 psi | 62% | 2913 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,699 psi | 40% | 1798 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,674 psi | 81% | 3051 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 39,885 psi | 68% | 2966 fps | 95% |
| Rottweil R 901 | <<locked>> | 88% | 38,072 psi | 65% | 2910 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 82% | 42,032 psi | 72% | 3018 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 39,972 psi | 68% | 3018 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 49,052 psi | 84% | 3100 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,076 psi | 73% | 2740 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,434 psi | 62% | 2904 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,476 psi | 59% | 2835 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 37,086 psi | 63% | 2831 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,736 psi | 57% | 2766 fps | 95.4% |
| Somchem S321 | <<locked>> | 92% | 45,919 psi | 78% | 3114 fps | 95.5% |
| Somchem S335 | <<locked>> | 86% | 33,953 psi | 58% | 2776 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 40,930 psi | 70% | 2913 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,663 psi | 56% | 2736 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 30,168 psi | 51% | 2677 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 86% | 28,761 psi | 49% | 2723 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 92% | 36,869 psi | 63% | 2897 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 94% | 45,919 psi | 78% | 3081 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 94% | 37,826 psi | 64% | 2930 fps | 95.5% |
| Winchester 748 | <<locked>> | 94% | 43,656 psi | 74% | 3104 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 87 powders for 6 mm B.R. Norma loaded with the .243 | 70gr | Speer TNT. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,301 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,301 fps. Accurate 2495 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 70.0 gr projectile in 0.243" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. As outliers, Accurate 2200, Accurate 2230, ADI AR 2208 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.