Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 82gr | TWENTY-NINE SOLID bullet and 39 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 Norma 202.
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>> | 90% | 41,089 psi | 86% | 2667 fps | 99.4% |
| Accurate 2460 | <<locked>> | 88% | 42,279 psi | 88% | 2707 fps | 97.5% |
| Accurate 2495 | <<locked>> | 98% | 41,669 psi | 87% | 2746 fps | 99.7% |
| Accurate 2520 | <<locked>> | 92% | 42,409 psi | 89% | 2753 fps | 97.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,118 psi | 86% | 2756 fps | 98% |
| Accurate LT-30 | <<locked>> | 82% | 41,147 psi | 86% | 2589 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 82% | 41,524 psi | 87% | 2592 fps | 96.8% |
| ADI AR 2219 | <<locked>> | 84% | 41,611 psi | 87% | 2723 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 94% | 43,279 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 41,597 psi | 87% | 2694 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,134 psi | 88% | 2621 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 43,178 psi | 90% | 2677 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 94% | 43,308 psi | 90% | 2785 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 88% | 43,062 psi | 90% | 2749 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 86% | 40,973 psi | 86% | 2707 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,445 psi | 68% | 1732 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 40,814 psi | 85% | 2769 fps | 99% |
| IMR 4198 | <<locked>> | 86% | 43,207 psi | 90% | 2680 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 42,221 psi | 88% | 2713 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 88% | 41,858 psi | 87% | 2697 fps | 96% |
| Lovex D073.6 | <<locked>> | 96% | 43,018 psi | 90% | 2776 fps | 97.3% |
| Norma 200 | <<locked>> | 82% | 41,872 psi | 87% | 2677 fps | 100% |
| Norma 202 | <<locked>> | 94% | 41,756 psi | 87% | 2723 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,489 psi | 68% | 1775 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 42,830 psi | 89% | 2717 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 90% | 41,031 psi | 86% | 2674 fps | 97.2% |
| Shooters World AR Plus | <<locked>> | 82% | 42,221 psi | 88% | 2713 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 43,018 psi | 90% | 2776 fps | 97.3% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 41,959 psi | 88% | 2720 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 42,569 psi | 89% | 2703 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 42,467 psi | 89% | 2644 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 41,060 psi | 86% | 2635 fps | 98.3% |
| Somchem S335 | <<locked>> | 92% | 41,031 psi | 86% | 2638 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 88% | 42,366 psi | 89% | 2648 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 92% | 41,916 psi | 88% | 2651 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 98% | 42,627 psi | 89% | 2749 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 96% | 42,119 psi | 88% | 2707 fps | 98% |
| Vihtavuori N540 | <<locked>> | 96% | 40,741 psi | 85% | 2694 fps | 97.2% |
| Winchester 748 | <<locked>> | 92% | 41,553 psi | 87% | 2749 fps | 95.9% |
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% | 29,892 psi | 62% | 2418 fps | 96.8% |
| Accurate 2460 | <<locked>> | 82% | 34,287 psi | 72% | 2543 fps | 95.1% |
| Accurate 2495 | <<locked>> | 84% | 25,817 psi | 54% | 2382 fps | 95.6% |
| Accurate 2520 | <<locked>> | 88% | 36,796 psi | 77% | 2638 fps | 95.6% |
| Accurate 4064 | <<locked>> | 92% | 31,691 psi | 66% | 2549 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 38,914 psi | 81% | 2543 fps | 98% |
| Accurate LT-32 | <<locked>> | 80% | 39,276 psi | 82% | 2546 fps | 96.1% |
| ADI AR 2219 | <<locked>> | 80% | 36,187 psi | 76% | 2608 fps | 97.1% |
| Alliant AR-Comp | 21.7 gr | 80% | 27,586 psi | 58% | 2438 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,418 psi | 72% | 2546 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,057 psi | 77% | 2523 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 40,872 psi | 85% | 2631 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 92% | 40,451 psi | 85% | 2730 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 33,330 psi | 70% | 2539 fps | 96.2% |
| Hodgdon H335 | <<locked>> | 80% | 33,402 psi | 70% | 2539 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,279 psi | 51% | 1558 fps | 100% |
| IMR 3031 | 22.7 gr | 84% | 29,733 psi | 62% | 2503 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 36,201 psi | 76% | 2543 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 80% | 39,320 psi | 82% | 2657 fps | 96% |
| Lovex D073.5 | <<locked>> | 86% | 39,073 psi | 82% | 2644 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 92% | 37,695 psi | 79% | 2671 fps | 95.8% |
| Norma 200 | <<locked>> | 80% | 39,030 psi | 82% | 2625 fps | 99.9% |
| Norma 202 | 24.3 gr | 88% | 34,708 psi | 73% | 2575 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,004 psi | 50% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 37,797 psi | 79% | 2615 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 84% | 34,316 psi | 72% | 2526 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 39,320 psi | 82% | 2657 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 92% | 37,695 psi | 79% | 2671 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,666 psi | 77% | 2608 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,143 psi | 73% | 2552 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 35,172 psi | 73% | 2497 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 31,850 psi | 67% | 2438 fps | 95.7% |
| Somchem S335 | <<locked>> | 84% | 32,082 psi | 67% | 2444 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 33,214 psi | 69% | 2461 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 80% | 28,877 psi | 60% | 2365 fps | 96.2% |
| Vihtavuori N135 | <<locked>> | 82% | 25,527 psi | 53% | 2349 fps | 95% |
| Vihtavuori N140 | <<locked>> | 88% | 32,822 psi | 69% | 2507 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 90% | 33,721 psi | 70% | 2539 fps | 95% |
| Winchester 748 | <<locked>> | 90% | 38,812 psi | 81% | 2694 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 39 powders for 6 x 52 R Bretschneider loaded with the .243 | 82gr | TWENTY-NINE SOLID. Alliant AR-Comp delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,795 fps. Accurate 4064 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 82.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Norma 202 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 82gr | TWENTY-NINE SOLID 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.