Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 85gr | Hornady Interbond bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Bofors RP3 and IMR 3031.
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>> | 84% | 40,988 psi | 86% | 2680 fps | 99.9% |
| Accurate 2460 | <<locked>> | 82% | 41,887 psi | 88% | 2723 fps | 98.7% |
| Accurate 2495 | <<locked>> | 92% | 43,004 psi | 90% | 2776 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,598 psi | 89% | 2776 fps | 98.6% |
| Accurate 4064 | <<locked>> | 94% | 42,801 psi | 89% | 2799 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,743 psi | 89% | 2743 fps | 97% |
| Alliant AR-Comp | <<locked>> | 86% | 40,944 psi | 86% | 2762 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,975 psi | 90% | 2831 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,525 psi | 89% | 2789 fps | 96.7% |
| Bofors RP3 | <<locked>> | 94% | 41,916 psi | 88% | 2789 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,322 psi | 88% | 2694 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 40,451 psi | 85% | 2753 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 82% | 42,467 psi | 89% | 2759 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 88% | 43,120 psi | 90% | 2785 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 41,481 psi | 87% | 2799 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,678 psi | 70% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,684 psi | 87% | 2736 fps | 95.9% |
| IMR 3031 | <<locked>> | 88% | 41,698 psi | 87% | 2802 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 42,743 psi | 89% | 2743 fps | 97% |
| Lovex D073.5 | <<locked>> | 82% | 41,655 psi | 87% | 2720 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 88% | 40,915 psi | 85% | 2753 fps | 98.2% |
| Lovex S062 | <<locked>> | 92% | 42,569 psi | 89% | 2756 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 41,989 psi | 88% | 2730 fps | 96.9% |
| Norma 202 | <<locked>> | 88% | 42,148 psi | 88% | 2753 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,765 psi | 71% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 42,250 psi | 88% | 2736 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,670 psi | 89% | 2874 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 84% | 40,930 psi | 86% | 2694 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 90% | 42,221 psi | 88% | 2726 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 96% | 41,800 psi | 87% | 2776 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 40,915 psi | 85% | 2753 fps | 98.2% |
| Shooters World Precision | <<locked>> | 92% | 42,569 psi | 89% | 2756 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,742 psi | 87% | 2661 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 40,785 psi | 85% | 2654 fps | 99.4% |
| Somchem S321 | <<locked>> | 84% | 42,902 psi | 90% | 2769 fps | 97.4% |
| Somchem S335 | <<locked>> | 86% | 40,886 psi | 85% | 2661 fps | 99.2% |
| Somchem S355 | <<locked>> | 96% | 42,844 psi | 90% | 2782 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 82% | 41,553 psi | 87% | 2651 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 41,597 psi | 87% | 2667 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 90% | 40,770 psi | 85% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 42,525 psi | 89% | 2736 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 96% | 41,379 psi | 86% | 2723 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 86% | 42,757 psi | 89% | 2740 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 90% | 40,814 psi | 85% | 2717 fps | 98.6% |
| Winchester 748 | <<locked>> | 86% | 41,249 psi | 86% | 2776 fps | 97.6% |
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% | 36,245 psi | 76% | 2585 fps | 99.5% |
| Accurate 2460 | <<locked>> | 80% | 39,044 psi | 82% | 2667 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 28,819 psi | 60% | 2467 fps | 98.3% |
| Accurate 2520 | <<locked>> | 80% | 34,360 psi | 72% | 2598 fps | 96.5% |
| Accurate 4064 | <<locked>> | 82% | 29,022 psi | 61% | 2484 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 37,637 psi | 79% | 2635 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 33,417 psi | 70% | 2608 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,987 psi | 84% | 2769 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 37,289 psi | 78% | 2677 fps | 95.1% |
| Bofors RP3 | 29.5 gr | 90% | 36,666 psi | 77% | 2677 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,362 psi | 78% | 2585 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,172 psi | 73% | 2635 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 39,900 psi | 83% | 2707 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 86% | 40,625 psi | 85% | 2733 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 38,783 psi | 81% | 2740 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,831 psi | 52% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 39,320 psi | 82% | 2687 fps | 95.1% |
| IMR 3031 | 25.1 gr | 80% | 32,024 psi | 67% | 2585 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 82% | 37,637 psi | 79% | 2635 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 38,870 psi | 81% | 2664 fps | 97% |
| Lovex D073.6 | <<locked>> | 80% | 30,966 psi | 65% | 2526 fps | 95.1% |
| Lovex S062 | <<locked>> | 88% | 37,420 psi | 78% | 2648 fps | 95.6% |
| Norma 201 | <<locked>> | 84% | 36,912 psi | 77% | 2621 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 32,416 psi | 68% | 2536 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,048 psi | 52% | 1640 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,421 psi | 82% | 2677 fps | 97.5% |
| ReloadSwiss RS 60 | 30.6 gr | 90% | 35,172 psi | 73% | 2690 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 36,013 psi | 75% | 2585 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 37,492 psi | 78% | 2625 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 94% | 38,914 psi | 81% | 2717 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,966 psi | 65% | 2526 fps | 95.1% |
| Shooters World Precision | <<locked>> | 88% | 37,420 psi | 78% | 2648 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,389 psi | 72% | 2503 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,891 psi | 58% | 2356 fps | 95.9% |
| Somchem S321 | <<locked>> | 80% | 37,420 psi | 78% | 2654 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 34,026 psi | 71% | 2513 fps | 97.8% |
| Somchem S355 | <<locked>> | 94% | 40,350 psi | 84% | 2733 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 39,117 psi | 82% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,301 psi | 72% | 2516 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 29,356 psi | 61% | 2474 fps | 98.3% |
| Vihtavuori N140 | <<locked>> | 80% | 30,501 psi | 64% | 2470 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 90% | 34,113 psi | 71% | 2569 fps | 95% |
| Vihtavuori N530 | <<locked>> | 82% | 37,463 psi | 78% | 2628 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 29,443 psi | 62% | 2451 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 33,489 psi | 70% | 2595 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 45 powders for 6 x 52 R BB2 loaded with the .243 | 85gr | Hornady Interbond. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,874 fps; across all powders the maximum-charge window runs from 1,788 fps to 2,874 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 70–90 %, 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. 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. ReloadSwiss RS 60, Bofors RP3, IMR 3031 rank at the top here: for 6 x 52 R BB2 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.