Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 80gr | Remington HP Power-Lokt 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 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 42,264 psi | 88% | 2717 fps | 99.4% |
| Accurate 2460 | <<locked>> | 88% | 41,002 psi | 86% | 2710 fps | 96.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,772 psi | 89% | 2792 fps | 99.7% |
| Accurate 2520 | <<locked>> | 92% | 40,640 psi | 85% | 2740 fps | 96.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,726 psi | 83% | 2753 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 84% | 43,018 psi | 90% | 2648 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 82% | 40,538 psi | 85% | 2595 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 82% | 42,641 psi | 89% | 2700 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 40,451 psi | 85% | 2723 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 94% | 41,945 psi | 88% | 2799 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 40,364 psi | 84% | 2697 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 41,118 psi | 86% | 2628 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 88% | 41,872 psi | 87% | 2753 fps | 98.2% |
| Hodgdon H335 | <<locked>> | 88% | 42,656 psi | 89% | 2766 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,648 psi | 68% | 1755 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 42,496 psi | 89% | 2828 fps | 99.1% |
| IMR 4198 | <<locked>> | 86% | 42,032 psi | 88% | 2687 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 40,973 psi | 86% | 2713 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 96% | 41,640 psi | 87% | 2776 fps | 96.6% |
| Norma 200 | <<locked>> | 84% | 43,018 psi | 90% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 96% | 42,989 psi | 90% | 2772 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,169 psi | 67% | 1788 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 41,698 psi | 87% | 2720 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 92% | 42,163 psi | 88% | 2720 fps | 97.1% |
| Shooters World AR Plus | <<locked>> | 82% | 40,973 psi | 86% | 2713 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 96% | 41,640 psi | 87% | 2776 fps | 96.6% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 40,770 psi | 85% | 2723 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 41,292 psi | 86% | 2707 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 41,278 psi | 86% | 2644 fps | 97% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,424 psi | 89% | 2684 fps | 98.3% |
| Somchem S335 | <<locked>> | 94% | 42,221 psi | 88% | 2687 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 82% | 42,757 psi | 89% | 2654 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 41,205 psi | 86% | 2654 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 94% | 43,134 psi | 90% | 2700 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 98% | 40,785 psi | 85% | 2746 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 96% | 40,973 psi | 86% | 2707 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 98% | 41,945 psi | 88% | 2740 fps | 97.1% |
| Winchester 748 | <<locked>> | 94% | 42,772 psi | 89% | 2799 fps | 95.8% |
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% | 29,269 psi | 61% | 2428 fps | 96.2% |
| Accurate 2460 | <<locked>> | 84% | 35,650 psi | 74% | 2595 fps | 95.2% |
| Accurate 2495 | <<locked>> | 86% | 26,672 psi | 56% | 2431 fps | 95.6% |
| Accurate 2520 | <<locked>> | 90% | 38,203 psi | 80% | 2690 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 32,445 psi | 68% | 2592 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 37,884 psi | 79% | 2543 fps | 97.4% |
| Accurate LT-32 | <<locked>> | 80% | 38,261 psi | 80% | 2549 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 40,161 psi | 84% | 2654 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,128 psi | 73% | 2605 fps | 96.4% |
| Alliant AR-Comp | 21.5 gr | 80% | 26,716 psi | 56% | 2431 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,736 psi | 70% | 2552 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,114 psi | 75% | 2526 fps | 97.3% |
| Hodgdon H322 | 22.2 gr | 80% | 32,358 psi | 68% | 2536 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 82% | 34,737 psi | 73% | 2595 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,946 psi | 50% | 1568 fps | 100% |
| IMR 3031 | 23.1 gr | 86% | 30,922 psi | 65% | 2556 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 35,186 psi | 74% | 2546 fps | 99.5% |
| Lovex D073.4 | <<locked>> | 80% | 38,116 psi | 80% | 2654 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 94% | 38,711 psi | 81% | 2713 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 37,855 psi | 79% | 2628 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 35,694 psi | 75% | 2621 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,685 psi | 49% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 39,320 psi | 82% | 2671 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 86% | 35,201 psi | 74% | 2572 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 38,116 psi | 80% | 2654 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 94% | 38,711 psi | 81% | 2713 fps | 95.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,592 psi | 74% | 2608 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,040 psi | 71% | 2549 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 36,289 psi | 76% | 2543 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,185 psi | 69% | 2490 fps | 95.7% |
| Somchem S335 | <<locked>> | 86% | 33,315 psi | 70% | 2497 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 40,292 psi | 84% | 2615 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,227 psi | 67% | 2461 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 28,021 psi | 59% | 2362 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 84% | 26,527 psi | 55% | 2402 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 90% | 33,707 psi | 70% | 2552 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 94% | 37,072 psi | 77% | 2641 fps | 95.8% |
| Winchester 748 | <<locked>> | 92% | 40,408 psi | 84% | 2749 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 | Remington HP Power-Lokt. IMR 3031 delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,828 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 1:10.0 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 H322 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 80gr | Remington HP Power-Lokt 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.