Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 85gr | Hornady Interbond bullet and 83 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 Lovex D073.6.
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>> | 88% | 40,799 psi | 85% | 2625 fps | 99.6% |
| Accurate 2015 | <<locked>> | 90% | 41,046 psi | 86% | 2612 fps | 99.5% |
| Accurate 2460 | <<locked>> | 86% | 41,887 psi | 88% | 2667 fps | 97.9% |
| Accurate 2460 | <<locked>> | 88% | 41,930 psi | 88% | 2648 fps | 97.6% |
| Accurate 2495 | <<locked>> | 96% | 41,466 psi | 87% | 2703 fps | 99.9% |
| Accurate 2495 | <<locked>> | 98% | 41,394 psi | 86% | 2684 fps | 99.7% |
| Accurate 2520 | <<locked>> | 90% | 42,018 psi | 88% | 2710 fps | 97.6% |
| Accurate 2520 | <<locked>> | 92% | 42,235 psi | 88% | 2694 fps | 97.3% |
| Accurate 4064 | <<locked>> | 98% | 41,466 psi | 87% | 2726 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,031 psi | 86% | 2697 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 82% | 42,975 psi | 90% | 2589 fps | 99.1% |
| Accurate LT-30 | <<locked>> | 82% | 41,307 psi | 86% | 2536 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 82% | 41,756 psi | 87% | 2543 fps | 97% |
| ADI AR 2219 | <<locked>> | 82% | 41,191 psi | 86% | 2680 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 84% | 41,582 psi | 87% | 2664 fps | 98.6% |
| ADI Benchmark 8208 | <<locked>> | 90% | 42,685 psi | 89% | 2680 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 92% | 42,888 psi | 90% | 2749 fps | 100% |
| Alliant AR-Comp | <<locked>> | 94% | 42,859 psi | 90% | 2730 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 41,336 psi | 86% | 2651 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 41,829 psi | 87% | 2641 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 41,582 psi | 87% | 2579 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,206 psi | 88% | 2569 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 88% | 42,612 psi | 89% | 2635 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 43,221 psi | 90% | 2621 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 42,859 psi | 90% | 2743 fps | 96.7% |
| Hodgdon BL-C2 | <<locked>> | 94% | 42,743 psi | 89% | 2720 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 86% | 42,627 psi | 89% | 2707 fps | 99% |
| Hodgdon H322 | <<locked>> | 88% | 43,091 psi | 90% | 2694 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 84% | 40,538 psi | 85% | 2667 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 86% | 41,118 psi | 86% | 2657 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,199 psi | 69% | 1726 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,822 psi | 69% | 1696 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 40,915 psi | 85% | 2736 fps | 99.4% |
| IMR 3031 | <<locked>> | 94% | 40,901 psi | 85% | 2713 fps | 99.1% |
| IMR 4198 | <<locked>> | 84% | 42,801 psi | 89% | 2635 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 43,308 psi | 90% | 2625 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 42,685 psi | 89% | 2680 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 82% | 42,264 psi | 88% | 2657 fps | 97% |
| Lovex D073.5 | <<locked>> | 86% | 41,423 psi | 87% | 2657 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 88% | 42,061 psi | 88% | 2648 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 94% | 43,120 psi | 90% | 2743 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 96% | 42,917 psi | 90% | 2717 fps | 97.4% |
| Lovex S062 | <<locked>> | 96% | 42,148 psi | 88% | 2687 fps | 95.8% |
| Norma 200 | <<locked>> | 82% | 41,597 psi | 87% | 2615 fps | 100% |
| Norma 202 | <<locked>> | 92% | 41,365 psi | 86% | 2684 fps | 98.1% |
| Norma 202 | <<locked>> | 94% | 41,959 psi | 88% | 2671 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,822 psi | 69% | 1759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,401 psi | 68% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 42,351 psi | 88% | 2677 fps | 97.3% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 42,931 psi | 90% | 2664 fps | 97% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 42,844 psi | 90% | 2795 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 90% | 43,018 psi | 90% | 2677 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 90% | 41,017 psi | 86% | 2615 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 82% | 42,264 psi | 88% | 2657 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 94% | 43,120 psi | 90% | 2743 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 96% | 42,917 psi | 90% | 2717 fps | 97.4% |
| Shooters World Precision | <<locked>> | 96% | 42,148 psi | 88% | 2687 fps | 95.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 41,553 psi | 87% | 2677 fps | 98% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 42,047 psi | 88% | 2664 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 42,235 psi | 88% | 2664 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 42,337 psi | 88% | 2641 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 41,843 psi | 87% | 2602 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 42,380 psi | 89% | 2589 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 40,509 psi | 85% | 2592 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,308 psi | 90% | 2618 fps | 98.8% |
| Somchem S321 | <<locked>> | 88% | 42,772 psi | 89% | 2707 fps | 96.2% |
| Somchem S321 | <<locked>> | 90% | 43,091 psi | 90% | 2690 fps | 95.9% |
| Somchem S335 | <<locked>> | 92% | 43,294 psi | 90% | 2648 fps | 99% |
| Somchem S335 | <<locked>> | 92% | 41,104 psi | 86% | 2585 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 86% | 41,930 psi | 88% | 2605 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 88% | 42,177 psi | 88% | 2589 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 90% | 41,423 psi | 87% | 2608 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 92% | 41,901 psi | 88% | 2595 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 96% | 42,380 psi | 89% | 2707 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 98% | 42,279 psi | 88% | 2687 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 94% | 41,640 psi | 87% | 2664 fps | 98.4% |
| Vihtavuori N140 | <<locked>> | 96% | 41,916 psi | 88% | 2648 fps | 98.1% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,799 psi | 85% | 2654 fps | 96% |
| Vihtavuori N530 | <<locked>> | 90% | 42,859 psi | 90% | 2680 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 96% | 43,047 psi | 90% | 2703 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 98% | 43,105 psi | 90% | 2684 fps | 97.9% |
| Winchester 748 | <<locked>> | 90% | 41,017 psi | 86% | 2710 fps | 96.4% |
| Winchester 748 | <<locked>> | 92% | 41,336 psi | 86% | 2690 fps | 96% |
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% | 31,676 psi | 66% | 2431 fps | 98% |
| Accurate 2015 | <<locked>> | 80% | 29,950 psi | 63% | 2369 fps | 97.1% |
| Accurate 2460 | <<locked>> | 80% | 34,185 psi | 71% | 2507 fps | 95.8% |
| Accurate 2460 | <<locked>> | 82% | 34,229 psi | 72% | 2487 fps | 95.3% |
| Accurate 2495 | <<locked>> | 80% | 24,236 psi | 51% | 2297 fps | 95.4% |
| Accurate 2495 | <<locked>> | 82% | 24,076 psi | 50% | 2280 fps | 95% |
| Accurate 2520 | <<locked>> | 84% | 34,200 psi | 71% | 2546 fps | 95.3% |
| Accurate 2520 | <<locked>> | 88% | 36,550 psi | 76% | 2579 fps | 95.7% |
| Accurate 4064 | <<locked>> | 88% | 30,008 psi | 63% | 2470 fps | 95.1% |
| Accurate 4064 | <<locked>> | 92% | 31,749 psi | 66% | 2500 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 40,640 psi | 85% | 2546 fps | 98.8% |
| Accurate LT-30 | <<locked>> | 80% | 39,001 psi | 81% | 2490 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 80% | 39,349 psi | 82% | 2493 fps | 96.4% |
| ADI AR 2219 | <<locked>> | 80% | 38,464 psi | 80% | 2625 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 80% | 36,419 psi | 76% | 2556 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 39,958 psi | 83% | 2628 fps | 95% |
| Alliant AR-Comp | 21.1 gr | 80% | 29,167 psi | 61% | 2451 fps | 99.3% |
| Alliant AR-Comp | 21.1 gr | 80% | 27,659 psi | 58% | 2388 fps | 98.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,390 psi | 76% | 2552 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,447 psi | 72% | 2490 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,030 psi | 82% | 2533 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,999 psi | 77% | 2467 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 37,826 psi | 79% | 2536 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 88% | 40,843 psi | 85% | 2575 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 37,420 psi | 78% | 2631 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 92% | 40,321 psi | 84% | 2671 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 35,070 psi | 73% | 2549 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 33,098 psi | 69% | 2480 fps | 96.3% |
| Hodgdon H335 | <<locked>> | 80% | 35,462 psi | 74% | 2559 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 33,736 psi | 70% | 2497 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,250 psi | 51% | 1535 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,946 psi | 50% | 1509 fps | 100% |
| IMR 3031 | 21 gr | 80% | 27,992 psi | 58% | 2421 fps | 95.6% |
| IMR 3031 | 21.6 gr | 82% | 28,210 psi | 59% | 2405 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 38,130 psi | 80% | 2546 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 36,129 psi | 75% | 2484 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 39,958 psi | 83% | 2628 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 39,233 psi | 82% | 2598 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 82% | 36,230 psi | 76% | 2552 fps | 95% |
| Lovex D073.5 | <<locked>> | 86% | 39,175 psi | 82% | 2592 fps | 95.5% |
| Lovex D073.6 | 25.2 gr | 88% | 35,012 psi | 73% | 2575 fps | 95.6% |
| Lovex D073.6 | 25.2 gr | 90% | 34,853 psi | 73% | 2556 fps | 95.1% |
| Lovex S062 | <<locked>> | 94% | 39,494 psi | 83% | 2635 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 39,175 psi | 82% | 2569 fps | 99.9% |
| Norma 202 | <<locked>> | 84% | 32,271 psi | 67% | 2484 fps | 95.4% |
| Norma 202 | <<locked>> | 88% | 34,679 psi | 72% | 2523 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,453 psi | 51% | 1578 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,134 psi | 50% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,041 psi | 73% | 2523 fps | 95.1% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 37,739 psi | 79% | 2559 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 40,132 psi | 84% | 2736 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 82% | 33,823 psi | 71% | 2480 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 84% | 34,098 psi | 71% | 2467 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 39,233 psi | 82% | 2598 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 35,012 psi | 73% | 2575 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,853 psi | 73% | 2556 fps | 95.1% |
| Shooters World Precision | <<locked>> | 94% | 39,494 psi | 83% | 2635 fps | 95.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,870 psi | 81% | 2625 fps | 97.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,985 psi | 77% | 2562 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,086 psi | 77% | 2559 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,172 psi | 73% | 2500 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 32,518 psi | 68% | 2405 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,953 psi | 69% | 2392 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 29,776 psi | 62% | 2356 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 29,950 psi | 63% | 2336 fps | 95.1% |
| Somchem S321 | <<locked>> | 86% | 40,030 psi | 84% | 2651 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 40,683 psi | 85% | 2641 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 29,892 psi | 62% | 2359 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 30,153 psi | 63% | 2346 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 34,969 psi | 73% | 2467 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 80% | 33,257 psi | 69% | 2408 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 80% | 30,443 psi | 64% | 2375 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 28,921 psi | 60% | 2316 fps | 96.5% |
| Vihtavuori N135 | <<locked>> | 80% | 25,527 psi | 53% | 2320 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 82% | 25,599 psi | 53% | 2303 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 84% | 30,443 psi | 64% | 2418 fps | 95% |
| Vihtavuori N140 | <<locked>> | 88% | 32,764 psi | 68% | 2454 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 98% | 38,130 psi | 80% | 2602 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 88% | 40,016 psi | 84% | 2625 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 88% | 33,402 psi | 70% | 2503 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 33,446 psi | 70% | 2484 fps | 95.1% |
| Winchester 748 | <<locked>> | 88% | 38,406 psi | 80% | 2654 fps | 95.6% |
| Winchester 748 | <<locked>> | 90% | 38,609 psi | 81% | 2631 fps | 95.1% |
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 83 powders for 6 x 52 R Bretschneider loaded with the .243 | 85gr | Hornady Interbond. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,795 fps. Accurate 4064 gives the best case fill at 100 %, and 83 of the 83 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 85.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Hodgdon TrailBoss, 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, Lovex D073.6 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 85gr | Hornady Interbond 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.