Load Specifications
Load data in caliber 6 x 45 mm with .243 | 85gr | Frontier PH HPBT bullet and 32 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% | 48,863 psi | 89% | 2543 fps | 99.7% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,396 psi | 81% | 2559 fps | 98.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,487 psi | 90% | 2654 fps | 96.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,590 psi | 59% | 2418 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 94% | 49,342 psi | 90% | 2543 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 92% | 47,152 psi | 86% | 2503 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 92% | 48,008 psi | 87% | 2598 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 46,572 psi | 85% | 2628 fps | 97.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,843 psi | 74% | 2579 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 48,370 psi | 88% | 2641 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 90% | 47,572 psi | 86% | 2566 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 47,485 psi | 86% | 2536 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 98% | 47,906 psi | 87% | 2648 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 98% | 48,849 psi | 89% | 2667 fps | 97% |
| Hodgdon H4198 | <<locked>> | 90% | 48,704 psi | 88% | 2549 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,256 psi | 57% | 1572 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,943 psi | 71% | 2546 fps | 96.6% |
| IMR 4198 | <<locked>> | 96% | 48,008 psi | 87% | 2585 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 48,805 psi | 89% | 2530 fps | 100% |
| Lovex S053 | <<locked>> | 86% | 47,805 psi | 87% | 2493 fps | 100% |
| Norma 200 | <<locked>> | 94% | 48,704 psi | 88% | 2628 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,734 psi | 56% | 1604 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 48,196 psi | 87% | 2559 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 48,472 psi | 88% | 2359 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 49,792 psi | 90% | 2677 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 49,269 psi | 89% | 2641 fps | 98.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,032 psi | 76% | 2487 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 82% | 49,458 psi | 90% | 2438 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 48,153 psi | 87% | 2556 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 49,023 psi | 89% | 2589 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,438 psi | 77% | 2490 fps | 98.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,780 psi | 63% | 2431 fps | 96.6% |
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% | 37,913 psi | 69% | 2359 fps | 98.2% |
| Accurate 2015 | <<locked>> | 90% | 32,648 psi | 59% | 2336 fps | 95.8% |
| Accurate 2460 | <<locked>> | 96% | 42,757 psi | 78% | 2546 fps | 95.3% |
| Accurate 2495 | <<locked>> | 98% | 30,124 psi | 55% | 2362 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 84% | 36,724 psi | 67% | 2320 fps | 95.3% |
| Accurate LT-32 | <<locked>> | 90% | 44,570 psi | 81% | 2461 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 33,170 psi | 60% | 2336 fps | 99.7% |
| ADI AR 2219 | 20.2 gr | 88% | 38,145 psi | 69% | 2470 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 86% | 26,643 psi | 48% | 2241 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,746 psi | 50% | 2224 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,838 psi | 63% | 2333 fps | 98.1% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 36,927 psi | 67% | 2352 fps | 95.7% |
| Hodgdon H322 | 20 gr | 90% | 37,043 psi | 67% | 2448 fps | 95% |
| Hodgdon H335 | <<locked>> | 94% | 42,467 psi | 77% | 2559 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 82% | 38,290 psi | 69% | 2362 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,945 psi | 42% | 1404 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 36,796 psi | 67% | 2500 fps | 95.9% |
| IMR 4198 | <<locked>> | 80% | 30,371 psi | 55% | 2238 fps | 97.1% |
| IMR 4227 | <<locked>> | 80% | 40,872 psi | 74% | 2402 fps | 99.9% |
| Lovex S053 | <<locked>> | 80% | 40,176 psi | 73% | 2372 fps | 100% |
| Norma 200 | 17.4 gr | 80% | 31,256 psi | 57% | 2303 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,669 psi | 41% | 1434 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,030 psi | 73% | 2428 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,333 psi | 68% | 2198 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 40,930 psi | 74% | 2526 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 34,345 psi | 62% | 2365 fps | 95.3% |
| Somchem S335 | <<locked>> | 96% | 37,115 psi | 67% | 2395 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 46,557 psi | 84% | 2398 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,330 psi | 60% | 2306 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 28,892 psi | 52% | 2201 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 92% | 33,866 psi | 61% | 2323 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 96% | 31,038 psi | 56% | 2343 fps | 95.2% |
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 32 powders for 6 x 45 mm loaded with the .243 | 85gr | Frontier PH HPBT. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,677 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,677 fps. Accurate 2015 gives the best case fill at 100 %, and 32 of the 32 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 1:9.0 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 HPBT 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.