Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 55gr | Nosler Ballistic Tip Lead Free bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, IMR 4227 and Lovex S053.
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>> | 96% | 52,953 psi | 90% | 3314 fps | 98.2% |
| Accurate 5744 | <<locked>> | 82% | 52,431 psi | 89% | 3363 fps | 98.8% |
| Accurate No. 11 FS | <<locked>> | 84% | 51,401 psi | 88% | 3291 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 52,562 psi | 89% | 3219 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 49,182 psi | 84% | 3373 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,553 psi | 69% | 3209 fps | 95.9% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 52,460 psi | 89% | 3373 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,095 psi | 50% | 2057 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,932 psi | 75% | 3222 fps | 97.5% |
| IMR 4227 | <<locked>> | 94% | 52,083 psi | 89% | 3320 fps | 99.7% |
| Lovex D060 | <<locked>> | 88% | 53,069 psi | 90% | 3376 fps | 98.9% |
| Lovex D063 | <<locked>> | 84% | 52,895 psi | 90% | 3340 fps | 99% |
| Lovex S053 | <<locked>> | 96% | 52,431 psi | 89% | 3317 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 46,021 psi | 78% | 3314 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,137 psi | 48% | 2093 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 50,749 psi | 86% | 3340 fps | 99.5% |
| Shooters World Blackout | <<locked>> | 84% | 52,895 psi | 90% | 3340 fps | 99% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 53,069 psi | 90% | 3376 fps | 98.9% |
| Shooters World SOCOM | <<locked>> | 86% | 50,343 psi | 86% | 3271 fps | 99% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 52,910 psi | 90% | 3156 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 51,967 psi | 88% | 3238 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 49,414 psi | 84% | 3323 fps | 100% |
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>> | 88% | 40,350 psi | 69% | 3071 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 49,400 psi | 84% | 3307 fps | 98.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 44,918 psi | 76% | 3176 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 80% | 41,147 psi | 70% | 3012 fps | 99.9% |
| ADI AR 2207 | <<locked>> | 82% | 27,818 psi | 47% | 2858 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 98% | 38,014 psi | 65% | 3150 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 90% | 38,029 psi | 65% | 3077 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,074 psi | 36% | 1841 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 37,086 psi | 63% | 3058 fps | 95.6% |
| IMR 4227 | 19.5 gr | 80% | 33,721 psi | 57% | 2923 fps | 96.3% |
| Lovex D060 | <<locked>> | 80% | 41,640 psi | 71% | 3136 fps | 96.8% |
| Lovex D063 | <<locked>> | 80% | 46,137 psi | 79% | 3215 fps | 98% |
| Lovex S053 | 19.1 gr | 80% | 32,634 psi | 56% | 2904 fps | 98.9% |
| Norma 200 | <<locked>> | 92% | 35,288 psi | 60% | 3071 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,465 psi | 35% | 1873 fps | 100% |
| ReloadSwiss RS 36 | 20.7 gr | 80% | 32,401 psi | 55% | 2930 fps | 95.6% |
| Shooters World Blackout | <<locked>> | 80% | 46,137 psi | 79% | 3215 fps | 98% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,640 psi | 71% | 3136 fps | 96.8% |
| Shooters World SOCOM | <<locked>> | 80% | 41,307 psi | 70% | 3091 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,458 psi | 52% | 2740 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,319 psi | 65% | 2995 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,426 psi | 45% | 2779 fps | 96.2% |
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 22 powders for 6 x 47 ATZL loaded with the .243 | 55gr | Nosler Ballistic Tip Lead Free. Lovex D060 delivers the highest muzzle velocity at 3,376 fps; across all powders the maximum-charge window runs from 2,057 fps to 3,376 fps. ADI AR 2207 gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-10x, Alliant Reloder-7 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 36, IMR 4227, Lovex S053 rank at the top here: for 6 x 47 ATZL with the .243 | 55gr | Nosler Ballistic Tip Lead Free 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.