Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 87gr | Hornady SP bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and Bofors RP3.
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>> | 82% | 41,176 psi | 86% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 43,163 psi | 90% | 2756 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,641 psi | 89% | 2759 fps | 99% |
| Accurate 4064 | <<locked>> | 90% | 40,466 psi | 85% | 2736 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 42,714 psi | 89% | 2756 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,206 psi | 88% | 2723 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 84% | 40,828 psi | 85% | 2736 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,453 psi | 89% | 2772 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 42,786 psi | 89% | 2851 fps | 96.6% |
| Bofors RP3 | <<locked>> | 92% | 42,206 psi | 88% | 2779 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,829 psi | 87% | 2671 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 86% | 43,207 psi | 90% | 2792 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 86% | 43,018 psi | 90% | 2772 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,263 psi | 86% | 2782 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,243 psi | 72% | 1795 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,539 psi | 87% | 2723 fps | 96.4% |
| IMR 3031 | <<locked>> | 86% | 41,495 psi | 87% | 2779 fps | 99.9% |
| IMR 4064 | <<locked>> | 90% | 43,294 psi | 90% | 2743 fps | 95.8% |
| IMR 4895 | <<locked>> | 88% | 41,626 psi | 87% | 2769 fps | 96% |
| IMR 8208 XBR | <<locked>> | 84% | 42,206 psi | 88% | 2723 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 86% | 40,973 psi | 86% | 2740 fps | 98.7% |
| Lovex S060 | <<locked>> | 84% | 41,249 psi | 86% | 2657 fps | 95.8% |
| Lovex S062 | <<locked>> | 90% | 42,438 psi | 89% | 2740 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 41,930 psi | 88% | 2717 fps | 97.4% |
| Norma 202 | <<locked>> | 86% | 41,742 psi | 87% | 2730 fps | 99.2% |
| Norma 203B | <<locked>> | 90% | 42,728 psi | 89% | 2782 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 43,192 psi | 90% | 2717 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,374 psi | 72% | 1837 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,830 psi | 89% | 2871 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 43,047 psi | 90% | 2723 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 88% | 42,134 psi | 88% | 2713 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 94% | 42,105 psi | 88% | 2769 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 40,973 psi | 86% | 2740 fps | 98.7% |
| Shooters World Precision | <<locked>> | 90% | 42,438 psi | 89% | 2740 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 41,437 psi | 87% | 2726 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,234 psi | 86% | 2638 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 40,625 psi | 85% | 2635 fps | 99.6% |
| Somchem S321 | <<locked>> | 82% | 42,772 psi | 89% | 2753 fps | 97.8% |
| Somchem S335 | <<locked>> | 86% | 43,221 psi | 90% | 2690 fps | 99.7% |
| Somchem S341 | <<locked>> | 86% | 42,612 psi | 89% | 2740 fps | 96.1% |
| Somchem S355 | <<locked>> | 94% | 43,047 psi | 90% | 2772 fps | 96.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,594 psi | 79% | 2743 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 41,205 psi | 86% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 40,959 psi | 86% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 42,395 psi | 89% | 2720 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 94% | 41,553 psi | 87% | 2713 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 84% | 42,192 psi | 88% | 2717 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 88% | 40,596 psi | 85% | 2700 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 43,207 psi | 90% | 2743 fps | 96.7% |
| Winchester 748 | <<locked>> | 84% | 41,234 psi | 86% | 2762 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 43,207 psi | 90% | 2782 fps | 97% |
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% | 38,421 psi | 80% | 2612 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 30,922 psi | 65% | 2503 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 37,130 psi | 78% | 2648 fps | 97.9% |
| Accurate 4064 | <<locked>> | 80% | 29,283 psi | 61% | 2474 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 84% | 40,001 psi | 84% | 2700 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,304 psi | 78% | 2618 fps | 96% |
| Alliant AR-Comp | <<locked>> | 80% | 35,679 psi | 75% | 2638 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 37,434 psi | 78% | 2667 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 40,074 psi | 84% | 2789 fps | 95.6% |
| Bofors RP3 | 30 gr | 88% | 36,753 psi | 77% | 2664 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,581 psi | 83% | 2625 fps | 97.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,317 psi | 74% | 2625 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 38,000 psi | 79% | 2664 fps | 95.4% |
| Hodgdon LEVERevolution | 29.6 gr | 84% | 36,201 psi | 76% | 2667 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,280 psi | 53% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 38,870 psi | 81% | 2664 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 34,171 psi | 71% | 2621 fps | 99.1% |
| IMR 4064 | <<locked>> | 88% | 40,495 psi | 85% | 2684 fps | 95% |
| IMR 4895 | <<locked>> | 86% | 38,899 psi | 81% | 2710 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 37,304 psi | 78% | 2618 fps | 96% |
| Lovex D073.6 | <<locked>> | 80% | 33,286 psi | 70% | 2569 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 38,638 psi | 81% | 2598 fps | 95% |
| Lovex S062 | <<locked>> | 84% | 35,418 psi | 74% | 2589 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 34,635 psi | 72% | 2556 fps | 95.2% |
| Norma 202 | <<locked>> | 80% | 34,360 psi | 72% | 2572 fps | 97.7% |
| Norma 203B | <<locked>> | 88% | 39,929 psi | 83% | 2723 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,524 psi | 85% | 2661 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,512 psi | 53% | 1644 fps | 100% |
| ReloadSwiss RS 60 | 30.4 gr | 86% | 32,750 psi | 68% | 2615 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 38,101 psi | 80% | 2621 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 35,172 psi | 73% | 2559 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 90% | 36,680 psi | 77% | 2654 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,286 psi | 70% | 2569 fps | 96.7% |
| Shooters World Precision | <<locked>> | 84% | 35,418 psi | 74% | 2589 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,812 psi | 81% | 2671 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,303 psi | 76% | 2536 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,617 psi | 62% | 2392 fps | 97.2% |
| Somchem S321 | <<locked>> | 80% | 39,668 psi | 83% | 2687 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 35,868 psi | 75% | 2539 fps | 98.7% |
| Somchem S341 | <<locked>> | 84% | 39,914 psi | 83% | 2684 fps | 95.2% |
| Somchem S355 | <<locked>> | 90% | 37,985 psi | 79% | 2667 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 35,157 psi | 73% | 2680 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 36,303 psi | 76% | 2546 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 31,444 psi | 66% | 2510 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 32,634 psi | 68% | 2510 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 88% | 34,127 psi | 71% | 2556 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 37,144 psi | 78% | 2612 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,459 psi | 66% | 2493 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 40,567 psi | 85% | 2687 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 36,013 psi | 75% | 2648 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 37,840 psi | 79% | 2671 fps | 95.5% |
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 51 powders for 6 x 52 R BB2 loaded with the .243 | 87gr | Hornady SP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,795 fps to 2,871 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 87.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Hodgdon LEVERevolution, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 87gr | Hornady SP 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.