Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 80gr | Fox Classic Hunter bullet and 38 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Hodgdon H335.
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 2015 | <<locked>> | 92% | 41,046 psi | 86% | 2680 fps | 99.1% |
| Accurate 2460 | <<locked>> | 90% | 41,887 psi | 88% | 2713 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,495 psi | 85% | 2743 fps | 99.3% |
| Accurate 2520 | <<locked>> | 94% | 42,148 psi | 88% | 2756 fps | 96.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,681 psi | 79% | 2700 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 84% | 41,829 psi | 87% | 2608 fps | 98.1% |
| Accurate LT-32 | <<locked>> | 84% | 42,235 psi | 88% | 2615 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 82% | 41,089 psi | 86% | 2661 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,785 psi | 87% | 2736 fps | 98% |
| Alliant AR-Comp | <<locked>> | 96% | 42,902 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 41,945 psi | 88% | 2717 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 82% | 42,946 psi | 90% | 2671 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 42,525 psi | 89% | 2638 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 90% | 43,279 psi | 90% | 2766 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 88% | 41,176 psi | 86% | 2723 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,358 psi | 68% | 1739 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 40,901 psi | 85% | 2779 fps | 98.6% |
| IMR 4198 | <<locked>> | 88% | 43,178 psi | 90% | 2694 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 42,264 psi | 88% | 2726 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 98% | 42,728 psi | 89% | 2779 fps | 96.6% |
| Norma 200 | <<locked>> | 84% | 41,611 psi | 87% | 2690 fps | 99.9% |
| Norma 202 | <<locked>> | 96% | 41,481 psi | 87% | 2730 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,865 psi | 67% | 1772 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 43,091 psi | 90% | 2733 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 94% | 42,946 psi | 90% | 2723 fps | 97% |
| Shooters World AR Plus | <<locked>> | 84% | 42,264 psi | 88% | 2726 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 98% | 42,728 psi | 89% | 2779 fps | 96.6% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 42,090 psi | 88% | 2733 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 42,424 psi | 89% | 2717 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 42,206 psi | 88% | 2648 fps | 96.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,046 psi | 86% | 2641 fps | 97.8% |
| Somchem S335 | <<locked>> | 94% | 41,263 psi | 86% | 2654 fps | 97.7% |
| Vihtavuori N120 | <<locked>> | 82% | 41,220 psi | 86% | 2618 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 42,424 psi | 89% | 2664 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 94% | 41,539 psi | 87% | 2657 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,206 psi | 88% | 2759 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 98% | 42,003 psi | 88% | 2713 fps | 97.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,207 psi | 90% | 2749 fps | 97.2% |
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 2015 | <<locked>> | 80% | 28,094 psi | 59% | 2385 fps | 95.5% |
| Accurate 2460 | <<locked>> | 86% | 36,695 psi | 77% | 2608 fps | 95.3% |
| Accurate 2495 | <<locked>> | 88% | 27,253 psi | 57% | 2438 fps | 95.7% |
| Accurate 2520 | <<locked>> | 92% | 39,088 psi | 82% | 2697 fps | 95.6% |
| Accurate 4064 | <<locked>> | 96% | 33,315 psi | 70% | 2605 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 36,738 psi | 77% | 2503 fps | 96.9% |
| Accurate LT-32 | <<locked>> | 82% | 39,827 psi | 83% | 2566 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 38,595 psi | 81% | 2615 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,040 psi | 71% | 2566 fps | 95.7% |
| Alliant AR-Comp | 20.8 gr | 80% | 25,759 psi | 54% | 2388 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,430 psi | 68% | 2513 fps | 98.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,987 psi | 84% | 2615 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,172 psi | 73% | 2493 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 82% | 33,605 psi | 70% | 2556 fps | 95.5% |
| Hodgdon H335 | 24.2 gr | 84% | 36,245 psi | 76% | 2618 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,902 psi | 50% | 1555 fps | 100% |
| IMR 3031 | 22.4 gr | 86% | 29,936 psi | 63% | 2516 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 34,272 psi | 72% | 2510 fps | 99.2% |
| Lovex D073.4 | <<locked>> | 82% | 39,726 psi | 83% | 2674 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 96% | 39,639 psi | 83% | 2720 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 36,941 psi | 77% | 2595 fps | 99.5% |
| Norma 202 | <<locked>> | 92% | 36,811 psi | 77% | 2635 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,612 psi | 49% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 40,669 psi | 85% | 2684 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 88% | 36,129 psi | 75% | 2579 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 82% | 39,726 psi | 83% | 2674 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 96% | 39,639 psi | 83% | 2720 fps | 95.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 37,028 psi | 77% | 2628 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,156 psi | 69% | 2516 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 37,420 psi | 78% | 2552 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 33,924 psi | 71% | 2493 fps | 95.7% |
| Somchem S335 | <<locked>> | 86% | 32,329 psi | 68% | 2461 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 38,754 psi | 81% | 2575 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,444 psi | 66% | 2431 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 28,979 psi | 61% | 2375 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 86% | 27,122 psi | 57% | 2408 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 92% | 34,780 psi | 73% | 2562 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 94% | 35,853 psi | 75% | 2602 fps | 95% |
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 38 powders for 6 x 52 R Bretschneider loaded with the .243 | 80gr | Fox Classic Hunter. Alliant AR-Comp delivers the highest muzzle velocity at 2,805 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,805 fps. Accurate 2495 gives the best case fill at 100 %, and 38 of the 38 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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. IMR 3031, Alliant AR-Comp, Hodgdon H335 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 80gr | Fox Classic Hunter 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.