Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 80gr | Osprey Virtus bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Hodgdon H335.
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% | 51,982 psi | 88% | 2795 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,630 psi | 81% | 2818 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 49,821 psi | 85% | 2871 fps | 97.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,520 psi | 60% | 2671 fps | 98% |
| Accurate 2520ᴾ | <<locked>> | 100% | 46,688 psi | 79% | 2858 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 94% | 52,736 psi | 90% | 2805 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 92% | 50,140 psi | 85% | 2766 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 92% | 51,590 psi | 88% | 2851 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 50,154 psi | 85% | 2900 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,222 psi | 75% | 2848 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 51,866 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 50,488 psi | 86% | 2815 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,184 psi | 87% | 2799 fps | 99.3% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 51,329 psi | 87% | 2841 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 98% | 51,488 psi | 88% | 2923 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 98% | 53,011 psi | 90% | 2946 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 90% | 51,677 psi | 88% | 2808 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,531 psi | 54% | 1722 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,076 psi | 72% | 2822 fps | 98.3% |
| IMR 4198 | <<locked>> | 96% | 50,589 psi | 86% | 2835 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 51,648 psi | 88% | 2776 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 51,256 psi | 87% | 2900 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 98% | 50,212 psi | 85% | 2871 fps | 96.6% |
| Lovex S053 | <<locked>> | 86% | 50,082 psi | 85% | 2726 fps | 100% |
| Norma 200 | <<locked>> | 94% | 52,170 psi | 89% | 2887 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 42,598 psi | 73% | 2772 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,415 psi | 53% | 1765 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 51,314 psi | 87% | 2812 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,648 psi | 88% | 2897 fps | 97.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 46,963 psi | 80% | 2815 fps | 97.4% |
| Shooters World AR Plus | <<locked>> | 92% | 51,256 psi | 87% | 2900 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 51,387 psi | 87% | 2585 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 50,720 psi | 86% | 2904 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 50,314 psi | 86% | 2867 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,224 psi | 80% | 2753 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 37,608 psi | 64% | 2589 fps | 96.2% |
| Somchem S321ᴾ | <<locked>> | 100% | 52,359 psi | 89% | 2930 fps | 96.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 44,933 psi | 76% | 2740 fps | 97.9% |
| Vihtavuori N110 | <<locked>> | 82% | 52,069 psi | 89% | 2667 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 51,706 psi | 88% | 2802 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 50,038 psi | 85% | 2808 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,195 psi | 79% | 2759 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,029 psi | 65% | 2700 fps | 98.4% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 40,799 psi | 69% | 2707 fps | 96.5% |
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% | 40,147 psi | 68% | 2598 fps | 99.2% |
| Accurate 2015 | <<locked>> | 84% | 28,398 psi | 48% | 2415 fps | 95% |
| Accurate 2460 | <<locked>> | 92% | 40,582 psi | 69% | 2707 fps | 95.8% |
| Accurate 2495 | <<locked>> | 94% | 28,819 psi | 49% | 2513 fps | 95.8% |
| Accurate 2520 | <<locked>> | 96% | 40,364 psi | 69% | 2746 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 34,287 psi | 58% | 2461 fps | 95.4% |
| Accurate LT-32 | <<locked>> | 86% | 41,742 psi | 71% | 2615 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 35,433 psi | 60% | 2575 fps | 100% |
| ADI AR 2219 | 22.6 gr | 84% | 35,694 psi | 61% | 2621 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 82% | 24,918 psi | 42% | 2375 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,428 psi | 50% | 2457 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,956 psi | 63% | 2572 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,126 psi | 55% | 2434 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 96% | 45,034 psi | 77% | 2733 fps | 95% |
| Hodgdon H322 | <<locked>> | 86% | 34,780 psi | 59% | 2598 fps | 95.3% |
| Hodgdon H335 | 24.5 gr | 88% | 37,521 psi | 64% | 2664 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 37,898 psi | 65% | 2556 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,887 psi | 39% | 1535 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 32,706 psi | 56% | 2608 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 31,720 psi | 54% | 2464 fps | 98.3% |
| IMR 4227 | <<locked>> | 80% | 43,134 psi | 73% | 2641 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 41,089 psi | 70% | 2720 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 94% | 43,526 psi | 74% | 2759 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 42,047 psi | 72% | 2598 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,040 psi | 56% | 2533 fps | 98.5% |
| Norma 202 | <<locked>> | 96% | 37,521 psi | 64% | 2667 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,945 psi | 39% | 1578 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,554 psi | 72% | 2671 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 42,293 psi | 72% | 2733 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 94% | 39,044 psi | 66% | 2664 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 86% | 41,089 psi | 70% | 2720 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,972 psi | 66% | 2405 fps | 100% |
| SNPE Vectan SP 10 | 24 gr | 86% | 38,711 psi | 66% | 2684 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 32,111 psi | 55% | 2507 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 38,899 psi | 66% | 2598 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 35,360 psi | 60% | 2539 fps | 95.5% |
| Somchem S321 | <<locked>> | 98% | 48,588 psi | 83% | 2871 fps | 95.6% |
| Somchem S335 | <<locked>> | 92% | 35,201 psi | 60% | 2546 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 49,400 psi | 84% | 2631 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,665 psi | 61% | 2539 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,355 psi | 48% | 2369 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 86% | 29,805 psi | 51% | 2415 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 92% | 29,399 psi | 50% | 2493 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 96% | 36,042 psi | 61% | 2608 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 44 powders for 6 x 47 ATZL loaded with the .243 | 80gr | Osprey Virtus. Hodgdon H335 delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,946 fps. Accurate 2015 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.5 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, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for 6 x 47 ATZL with the .243 | 80gr | Osprey Virtus 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.