Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 85gr | Lehigh Defense Controlled Chaos bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Hodgdon H335 and Hodgdon H322.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 53,113 psi | 90% | 2700 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,747 psi | 83% | 2723 fps | 99.7% |
| Accurate 2460 | <<locked>> | 98% | 50,995 psi | 87% | 2776 fps | 98.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,101 psi | 63% | 2598 fps | 98.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,921 psi | 82% | 2769 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 92% | 50,372 psi | 86% | 2657 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 92% | 50,894 psi | 87% | 2667 fps | 97.7% |
| ADI AR 2207 | <<locked>> | 92% | 53,011 psi | 90% | 2753 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,155 psi | 87% | 2802 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,165 psi | 77% | 2753 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 96% | 49,995 psi | 85% | 2759 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,416 psi | 88% | 2713 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,706 psi | 88% | 2697 fps | 99.4% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 51,764 psi | 88% | 2736 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 98% | 52,518 psi | 89% | 2825 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 96% | 50,633 psi | 86% | 2799 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 90% | 52,243 psi | 89% | 2703 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,705 psi | 54% | 1644 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,076 psi | 73% | 2733 fps | 98.7% |
| IMR 4198 | <<locked>> | 96% | 51,793 psi | 88% | 2736 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,895 psi | 90% | 2677 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,663 psi | 90% | 2805 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 98% | 51,474 psi | 88% | 2782 fps | 97.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 42,018 psi | 72% | 2684 fps | 96% |
| Lovex S053 | <<locked>> | 86% | 51,343 psi | 87% | 2628 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,098 psi | 90% | 2782 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,729 psi | 74% | 2684 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,749 psi | 54% | 1686 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,417 psi | 89% | 2710 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,185 psi | 89% | 2795 fps | 97.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,269 psi | 82% | 2726 fps | 97.8% |
| Shooters World AR Plus | <<locked>> | 92% | 52,663 psi | 90% | 2805 fps | 97.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 42,018 psi | 72% | 2684 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 52,243 psi | 89% | 2487 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,401 psi | 88% | 2802 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 50,749 psi | 86% | 2759 fps | 99.6% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,008 psi | 82% | 2654 fps | 97.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,421 psi | 65% | 2500 fps | 96.7% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,011 psi | 90% | 2828 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,137 psi | 79% | 2651 fps | 98.3% |
| Vihtavuori N120 | <<locked>> | 92% | 53,113 psi | 90% | 2703 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 50,720 psi | 86% | 2707 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,978 psi | 80% | 2661 fps | 99.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,957 psi | 66% | 2612 fps | 98.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,858 psi | 71% | 2621 fps | 97% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,350 psi | 69% | 2608 fps | 96% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,079 psi | 80% | 2766 fps | 96.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 40,698 psi | 69% | 2503 fps | 99.4% |
| Accurate 2015 | <<locked>> | 82% | 27,992 psi | 48% | 2303 fps | 95.1% |
| Accurate 2460 | <<locked>> | 90% | 39,218 psi | 67% | 2575 fps | 95.7% |
| Accurate 2495 | <<locked>> | 90% | 26,600 psi | 45% | 2349 fps | 95.1% |
| Accurate 2520 | <<locked>> | 94% | 38,595 psi | 66% | 2605 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 34,867 psi | 59% | 2372 fps | 95.9% |
| Accurate LT-32 | <<locked>> | 84% | 40,016 psi | 68% | 2477 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 36,550 psi | 62% | 2487 fps | 100% |
| ADI AR 2219 | 20.9 gr | 82% | 34,171 psi | 58% | 2480 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 24,192 psi | 41% | 2254 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,618 psi | 52% | 2385 fps | 97.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,826 psi | 64% | 2484 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,170 psi | 56% | 2362 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 96% | 46,369 psi | 79% | 2648 fps | 95.6% |
| Hodgdon H322 | 20.7 gr | 84% | 33,330 psi | 57% | 2461 fps | 95.1% |
| Hodgdon H335 | 23.2 gr | 88% | 38,334 psi | 65% | 2575 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 38,450 psi | 65% | 2461 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,612 psi | 40% | 1476 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 31,560 psi | 54% | 2477 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,430 psi | 55% | 2379 fps | 98.7% |
| IMR 4227 | <<locked>> | 80% | 43,947 psi | 75% | 2543 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 39,697 psi | 68% | 2585 fps | 95% |
| Lovex D073.5 | <<locked>> | 94% | 44,541 psi | 76% | 2671 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 98% | 39,262 psi | 67% | 2631 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 42,815 psi | 73% | 2500 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,243 psi | 58% | 2454 fps | 99% |
| Norma 202 | <<locked>> | 94% | 36,477 psi | 62% | 2543 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,337 psi | 40% | 1506 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,207 psi | 74% | 2569 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 40,437 psi | 69% | 2592 fps | 95% |
| Rottweil R 901 | <<locked>> | 92% | 38,029 psi | 65% | 2536 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 84% | 39,697 psi | 68% | 2585 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 98% | 39,262 psi | 67% | 2631 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,842 psi | 68% | 2313 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 36,999 psi | 63% | 2543 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,140 psi | 53% | 2379 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 37,376 psi | 64% | 2464 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 33,765 psi | 57% | 2405 fps | 95.2% |
| Somchem S321 | <<locked>> | 96% | 45,948 psi | 78% | 2717 fps | 95.2% |
| Somchem S335 | <<locked>> | 90% | 34,142 psi | 58% | 2421 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 36,738 psi | 63% | 2451 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,457 psi | 50% | 2300 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 28,790 psi | 49% | 2290 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 90% | 28,456 psi | 48% | 2365 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 36,941 psi | 63% | 2523 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 98% | 37,898 psi | 65% | 2559 fps | 95.3% |
| Winchester 748 | <<locked>> | 98% | 44,251 psi | 75% | 2713 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 47 powders for 6 x 47 ATZL loaded with the .243 | 85gr | Lehigh Defense Controlled Chaos. Somchem S321 delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,828 fps. Accurate 2015 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. ADI AR 2219, Hodgdon H335, Hodgdon H322 rank at the top here: for 6 x 47 ATZL with the .243 | 85gr | Lehigh Defense Controlled Chaos 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.