Load Specifications
Load data in caliber 6 x 45 mm with .243 | 77gr | Hasler ARIETE bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, Alliant Reloder-7 and ADI AR 2207.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 48,196 psi | 87% | 2644 fps | 98.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 39,189 psi | 71% | 2575 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 96% | 48,051 psi | 87% | 2628 fps | 96.7% |
| ADI AR 2205 | <<locked>> | 82% | 48,211 psi | 87% | 2543 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 48,776 psi | 89% | 2736 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 48,312 psi | 88% | 2759 fps | 96.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 36,956 psi | 67% | 2598 fps | 98.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 46,209 psi | 84% | 2726 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 94% | 48,631 psi | 88% | 2697 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 49,255 psi | 89% | 2667 fps | 97.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 46,224 psi | 84% | 2723 fps | 96% |
| Hodgdon H4198 | <<locked>> | 92% | 47,456 psi | 86% | 2631 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,545 psi | 55% | 1637 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 48,559 psi | 88% | 2710 fps | 99.6% |
| IMR 4227 | <<locked>> | 88% | 47,485 psi | 86% | 2628 fps | 99.9% |
| Lovex D060 | <<locked>> | 82% | 48,370 psi | 88% | 2667 fps | 99.5% |
| Lovex S053 | <<locked>> | 90% | 49,023 psi | 89% | 2635 fps | 100% |
| Norma 200 | <<locked>> | 98% | 49,284 psi | 89% | 2759 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,921 psi | 54% | 1670 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 46,514 psi | 84% | 2654 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 48,370 psi | 88% | 2667 fps | 99.5% |
| Shooters World SOCOM | <<locked>> | 82% | 48,385 psi | 88% | 2635 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 47,195 psi | 86% | 2467 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 47,384 psi | 86% | 2720 fps | 97.4% |
| Vihtavuori N110 | <<locked>> | 84% | 48,820 psi | 89% | 2556 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 48,965 psi | 89% | 2694 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 44,527 psi | 81% | 2628 fps | 98.3% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 38,667 psi | 70% | 2520 fps | 95.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 34,621 psi | 63% | 2392 fps | 96% |
| Accurate 2015 | <<locked>> | 98% | 36,883 psi | 67% | 2530 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 92% | 42,859 psi | 78% | 2536 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 45,484 psi | 83% | 2500 fps | 100% |
| ADI AR 2207 | 16.4 gr | 80% | 30,066 psi | 55% | 2375 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 96% | 44,933 psi | 82% | 2700 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 94% | 30,618 psi | 56% | 2444 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 31,894 psi | 58% | 2438 fps | 95.3% |
| Alliant Reloder-7 | 16.9 gr | 80% | 31,517 psi | 57% | 2359 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 40,683 psi | 74% | 2523 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 98% | 42,975 psi | 78% | 2664 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 90% | 44,788 psi | 81% | 2585 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,278 psi | 40% | 1460 fps | 100% |
| IMR 4198 | <<locked>> | 82% | 29,341 psi | 53% | 2306 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 37,318 psi | 68% | 2444 fps | 99% |
| Lovex D060 | <<locked>> | 80% | 45,643 psi | 83% | 2618 fps | 99.2% |
| Lovex S053 | <<locked>> | 80% | 36,637 psi | 66% | 2425 fps | 100% |
| Norma 200 | 17.6 gr | 82% | 29,936 psi | 54% | 2375 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,915 psi | 40% | 1493 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 36,390 psi | 66% | 2467 fps | 98.7% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 45,643 psi | 83% | 2618 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 80% | 45,672 psi | 83% | 2592 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,606 psi | 63% | 2264 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 39,784 psi | 72% | 2582 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 43,091 psi | 78% | 2470 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 30,342 psi | 55% | 2352 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 90% | 32,837 psi | 60% | 2398 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 98% | 36,463 psi | 66% | 2477 fps | 95.1% |
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 28 powders for 6 x 45 mm loaded with the .243 | 77gr | Hasler ARIETE. ADI AR 2219 delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,759 fps. Accurate 2015 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 54–89 %, leaving at least 11 % headroom. The 77.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x 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. Norma 200, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 6 x 45 mm with the .243 | 77gr | Hasler ARIETE 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.