Load Specifications
Load data in caliber 6 x 47 ATZL with .243 | 50gr | Impala LWHV LS bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, ADI AR 2207 and Alliant Reloder-7.
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>> | 94% | 51,837 psi | 88% | 3412 fps | 97.3% |
| Accurate No. 11 FS | <<locked>> | 82% | 50,952 psi | 87% | 3412 fps | 99.8% |
| ADI AR 2205 | <<locked>> | 86% | 51,953 psi | 88% | 3337 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 52,257 psi | 89% | 3553 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 43,482 psi | 74% | 3383 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 98% | 52,098 psi | 89% | 3484 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,472 psi | 52% | 2175 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,093 psi | 78% | 3383 fps | 97.2% |
| IMR 4227 | <<locked>> | 92% | 50,705 psi | 86% | 3422 fps | 99.1% |
| Lovex D060 | <<locked>> | 86% | 51,692 psi | 88% | 3481 fps | 98.1% |
| Lovex D063 | <<locked>> | 82% | 51,343 psi | 87% | 3442 fps | 98.2% |
| Lovex S053 | <<locked>> | 94% | 51,648 psi | 88% | 3435 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 50,227 psi | 86% | 3504 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,805 psi | 51% | 2218 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 52,997 psi | 90% | 3507 fps | 99.3% |
| Shooters World Blackout | <<locked>> | 82% | 51,343 psi | 87% | 3442 fps | 98.2% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 51,692 psi | 88% | 3481 fps | 98.1% |
| Shooters World SOCOM | <<locked>> | 86% | 52,373 psi | 89% | 3432 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 52,576 psi | 90% | 3284 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 51,663 psi | 88% | 3366 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 52,301 psi | 89% | 3501 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% | 42,888 psi | 73% | 3232 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 47,718 psi | 81% | 3346 fps | 99.6% |
| ADI AR 2205 | <<locked>> | 80% | 43,439 psi | 74% | 3176 fps | 99.9% |
| ADI AR 2207 | 21.1 gr | 82% | 30,922 psi | 53% | 3045 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 41,089 psi | 70% | 3327 fps | 95% |
| Alliant Reloder-7 | 23.9 gr | 90% | 41,394 psi | 70% | 3258 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,423 psi | 38% | 1949 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 39,131 psi | 67% | 3215 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 35,868 psi | 61% | 3084 fps | 96% |
| Lovex D060 | <<locked>> | 80% | 43,265 psi | 74% | 3294 fps | 96.3% |
| Lovex D063 | <<locked>> | 80% | 47,906 psi | 82% | 3373 fps | 97.5% |
| Lovex S053 | <<locked>> | 80% | 35,317 psi | 60% | 3077 fps | 98.8% |
| Norma 200 | <<locked>> | 92% | 39,407 psi | 67% | 3268 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,017 psi | 37% | 1985 fps | 100% |
| ReloadSwiss RS 36 | 21.4 gr | 80% | 35,157 psi | 60% | 3104 fps | 95.6% |
| Shooters World Blackout | <<locked>> | 80% | 47,906 psi | 82% | 3373 fps | 97.5% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,265 psi | 74% | 3294 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 80% | 43,279 psi | 74% | 3248 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,156 psi | 56% | 2907 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 41,292 psi | 70% | 3173 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,138 psi | 50% | 2953 fps | 96.4% |
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 21 powders for 6 x 47 ATZL loaded with the .243 | 50gr | Impala LWHV LS. ADI AR 2207 delivers the highest muzzle velocity at 3,553 fps; across all powders the maximum-charge window runs from 2,175 fps to 3,553 fps. ADI AR 2207 gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 50.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-10x, Hodgdon TrailBoss 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, ADI AR 2207, Alliant Reloder-7 rank at the top here: for 6 x 47 ATZL with the .243 | 50gr | Impala LWHV LS 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.