Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 80gr | Frontier BTSP 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% | 52,823 psi | 90% | 2795 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,167 psi | 82% | 2808 fps | 99.5% |
| Accurate 2460 | <<locked>> | 98% | 50,560 psi | 86% | 2867 fps | 97.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,448 psi | 62% | 2674 fps | 98.1% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,297 psi | 81% | 2854 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 94% | 52,794 psi | 90% | 2792 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 92% | 50,140 psi | 85% | 2753 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 92% | 52,388 psi | 89% | 2848 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 50,444 psi | 86% | 2894 fps | 98.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,614 psi | 76% | 2841 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 52,156 psi | 89% | 2894 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 50,734 psi | 86% | 2805 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,459 psi | 88% | 2789 fps | 99.2% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 51,706 psi | 88% | 2831 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 98% | 51,721 psi | 88% | 2913 fps | 99% |
| Hodgdon H335 | <<locked>> | 96% | 49,647 psi | 85% | 2881 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 90% | 51,590 psi | 88% | 2792 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,502 psi | 54% | 1709 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,511 psi | 72% | 2815 fps | 98.3% |
| IMR 4198 | <<locked>> | 96% | 51,126 psi | 87% | 2828 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,083 psi | 89% | 2769 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 51,750 psi | 88% | 2890 fps | 97.4% |
| Lovex D073.5 | <<locked>> | 98% | 50,966 psi | 87% | 2867 fps | 96.6% |
| Lovex S053 | <<locked>> | 86% | 50,604 psi | 86% | 2720 fps | 100% |
| Norma 200 | <<locked>> | 94% | 52,736 psi | 90% | 2881 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,062 psi | 73% | 2766 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,473 psi | 54% | 1755 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 51,924 psi | 88% | 2805 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,343 psi | 87% | 2881 fps | 97.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,718 psi | 81% | 2812 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 92% | 51,750 psi | 88% | 2890 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 51,779 psi | 88% | 2579 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,082 psi | 87% | 2897 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 50,430 psi | 86% | 2854 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,558 psi | 81% | 2743 fps | 97.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,000 psi | 65% | 2582 fps | 96.1% |
| Somchem S321ᴾ | <<locked>> | 100% | 52,286 psi | 89% | 2917 fps | 96.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,484 psi | 77% | 2736 fps | 97.9% |
| Vihtavuori N110 | <<locked>> | 82% | 52,533 psi | 89% | 2661 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 52,388 psi | 89% | 2799 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 50,285 psi | 86% | 2799 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,514 psi | 79% | 2749 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,479 psi | 66% | 2694 fps | 98.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,234 psi | 70% | 2700 fps | 96.4% |
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% | 40,321 psi | 69% | 2589 fps | 99.1% |
| Accurate 2015 | <<locked>> | 84% | 29,269 psi | 50% | 2421 fps | 95.2% |
| Accurate 2460 | <<locked>> | 92% | 41,249 psi | 70% | 2707 fps | 95.8% |
| Accurate 2495 | <<locked>> | 92% | 27,818 psi | 47% | 2467 fps | 95.2% |
| Accurate 2520 | <<locked>> | 96% | 40,944 psi | 70% | 2740 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 34,809 psi | 59% | 2457 fps | 95.4% |
| Accurate LT-32 | <<locked>> | 86% | 42,351 psi | 72% | 2612 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 36,071 psi | 61% | 2572 fps | 100% |
| ADI AR 2219 | 22.3 gr | 84% | 36,419 psi | 62% | 2621 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 24,105 psi | 41% | 2326 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,182 psi | 51% | 2457 fps | 96.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,695 psi | 64% | 2572 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,735 psi | 56% | 2438 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 96% | 45,919 psi | 78% | 2733 fps | 95% |
| Hodgdon H322 | <<locked>> | 86% | 35,114 psi | 60% | 2589 fps | 95.2% |
| Hodgdon H335 | 24.1 gr | 88% | 37,927 psi | 65% | 2657 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 38,392 psi | 65% | 2549 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,264 psi | 40% | 1529 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 33,098 psi | 56% | 2602 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 32,184 psi | 55% | 2461 fps | 98.3% |
| IMR 4227 | <<locked>> | 80% | 43,482 psi | 74% | 2635 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 41,539 psi | 71% | 2713 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 94% | 44,266 psi | 75% | 2756 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 42,511 psi | 72% | 2592 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,055 psi | 58% | 2539 fps | 98.6% |
| Norma 202 | <<locked>> | 96% | 37,942 psi | 65% | 2664 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,395 psi | 40% | 1575 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,120 psi | 73% | 2664 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 42,656 psi | 73% | 2726 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 94% | 39,755 psi | 68% | 2661 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 86% | 41,539 psi | 71% | 2713 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,305 psi | 67% | 2395 fps | 100% |
| SNPE Vectan SP 10 | 23.6 gr | 86% | 39,131 psi | 67% | 2677 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 32,706 psi | 56% | 2507 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 39,276 psi | 67% | 2592 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 35,708 psi | 61% | 2530 fps | 95.4% |
| Somchem S321 | <<locked>> | 98% | 49,110 psi | 84% | 2864 fps | 95.5% |
| Somchem S335 | <<locked>> | 92% | 35,708 psi | 61% | 2543 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 49,806 psi | 85% | 2621 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,230 psi | 62% | 2536 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,051 psi | 49% | 2372 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 86% | 30,458 psi | 52% | 2415 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 92% | 29,849 psi | 51% | 2487 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 98% | 38,827 psi | 66% | 2651 fps | 95.7% |
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 | Frontier BTSP. Somchem S321 delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,917 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 54–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 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 | Frontier BTSP 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.