Load Specifications
Load data in caliber 6 x 45 mm with .243 | 85gr | Frontier PH HPFB bullet and 34 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Norma 200 and Hodgdon H322.
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>> | 88% | 48,689 psi | 88% | 2533 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,598 psi | 79% | 2539 fps | 98.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 48,762 psi | 88% | 2635 fps | 96.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,821 psi | 58% | 2395 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 94% | 49,168 psi | 89% | 2533 fps | 98.1% |
| Accurate LT-32 | <<locked>> | 94% | 49,719 psi | 90% | 2536 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 92% | 47,718 psi | 87% | 2585 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 49,269 psi | 89% | 2661 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,118 psi | 73% | 2556 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 98% | 47,456 psi | 86% | 2618 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 92% | 49,443 psi | 90% | 2585 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 46,833 psi | 85% | 2520 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 98% | 47,108 psi | 85% | 2628 fps | 97.6% |
| Hodgdon H335 | <<locked>> | 98% | 48,153 psi | 87% | 2648 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 90% | 47,834 psi | 87% | 2526 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,140 psi | 56% | 1565 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,305 psi | 70% | 2526 fps | 96.2% |
| IMR 4198 | <<locked>> | 98% | 49,864 psi | 90% | 2605 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 48,486 psi | 88% | 2516 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 49,763 psi | 90% | 2651 fps | 96.1% |
| Lovex S053 | <<locked>> | 88% | 49,487 psi | 90% | 2510 fps | 100% |
| Norma 200 | <<locked>> | 94% | 47,790 psi | 87% | 2608 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,618 psi | 56% | 1598 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 47,921 psi | 87% | 2549 fps | 100% |
| Shooters World AR Plus | <<locked>> | 94% | 49,763 psi | 90% | 2651 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 48,051 psi | 87% | 2349 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 49,052 psi | 89% | 2657 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 48,385 psi | 88% | 2618 fps | 98.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,394 psi | 75% | 2467 fps | 96.1% |
| Vihtavuori N110 | <<locked>> | 82% | 48,994 psi | 89% | 2425 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 47,892 psi | 87% | 2543 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 48,863 psi | 89% | 2575 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,380 psi | 77% | 2480 fps | 98% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,664 psi | 63% | 2418 fps | 96.4% |
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% | 37,173 psi | 67% | 2339 fps | 98% |
| Accurate 2015 | <<locked>> | 90% | 31,923 psi | 58% | 2310 fps | 95.4% |
| Accurate 2460 | <<locked>> | 96% | 41,989 psi | 76% | 2523 fps | 95% |
| Accurate 2495 | <<locked>> | 98% | 29,892 psi | 54% | 2349 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 84% | 36,492 psi | 66% | 2310 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 92% | 46,992 psi | 85% | 2493 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 32,793 psi | 60% | 2323 fps | 99.7% |
| ADI AR 2219 | 20 gr | 88% | 37,956 psi | 69% | 2457 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 86% | 26,440 psi | 48% | 2228 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 82% | 29,124 psi | 53% | 2257 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,519 psi | 63% | 2320 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 36,274 psi | 66% | 2333 fps | 95.3% |
| Hodgdon H322 | 20.2 gr | 92% | 39,073 psi | 71% | 2480 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 94% | 42,453 psi | 77% | 2549 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 84% | 40,292 psi | 73% | 2395 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,771 psi | 41% | 1394 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 36,114 psi | 66% | 2477 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 30,066 psi | 55% | 2224 fps | 96.8% |
| IMR 4227 | <<locked>> | 80% | 40,524 psi | 74% | 2388 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 92% | 46,195 psi | 84% | 2595 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 39,827 psi | 72% | 2362 fps | 100% |
| Norma 200 | 17.2 gr | 80% | 30,908 psi | 56% | 2287 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,466 psi | 41% | 1424 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,711 psi | 72% | 2415 fps | 99.8% |
| Shooters World AR Plus | <<locked>> | 92% | 46,195 psi | 84% | 2595 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,898 psi | 67% | 2185 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 43,221 psi | 78% | 2559 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 34,084 psi | 62% | 2349 fps | 95% |
| Somchem S335 | <<locked>> | 98% | 39,131 psi | 71% | 2425 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 46,064 psi | 84% | 2385 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 32,996 psi | 60% | 2293 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 29,878 psi | 54% | 2221 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 92% | 33,214 psi | 60% | 2300 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 98% | 32,242 psi | 59% | 2362 fps | 95.5% |
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 34 powders for 6 x 45 mm loaded with the .243 | 85gr | Frontier PH HPFB. ADI AR 2219 delivers the highest muzzle velocity at 2,661 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,661 fps. Accurate 2015 gives the best case fill at 100 %, and 34 of the 34 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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, Norma 200, Hodgdon H322 rank at the top here: for 6 x 45 mm with the .243 | 85gr | Frontier PH HPFB 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.