Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Speer Deep Curl Soft Point bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 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>> | 82% | 42,003 psi | 88% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 41,756 psi | 87% | 2690 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,047 psi | 88% | 2717 fps | 99.1% |
| Accurate 2520 | <<locked>> | 84% | 42,047 psi | 88% | 2717 fps | 99.1% |
| Accurate 4064 | <<locked>> | 90% | 41,597 psi | 87% | 2713 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 41,249 psi | 86% | 2687 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 40,698 psi | 85% | 2651 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 84% | 41,887 psi | 88% | 2710 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,060 psi | 86% | 2703 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,075 psi | 86% | 2776 fps | 96.5% |
| Bofors RP3 | <<locked>> | 90% | 40,466 psi | 85% | 2703 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 43,004 psi | 90% | 2654 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 41,350 psi | 86% | 2713 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 82% | 43,033 psi | 90% | 2710 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 84% | 41,510 psi | 87% | 2700 fps | 96.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,769 psi | 83% | 2684 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,206 psi | 88% | 2762 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 71% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,640 psi | 87% | 2684 fps | 96.9% |
| IMR 3031 | <<locked>> | 88% | 41,698 psi | 87% | 2736 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 42,598 psi | 89% | 2749 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 82% | 40,698 psi | 85% | 2651 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 86% | 42,047 psi | 88% | 2717 fps | 99.1% |
| Lovex S060 | <<locked>> | 84% | 41,989 psi | 88% | 2631 fps | 96.4% |
| Lovex S062 | <<locked>> | 88% | 41,017 psi | 86% | 2671 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 42,830 psi | 89% | 2694 fps | 98% |
| Norma 202 | <<locked>> | 86% | 43,091 psi | 90% | 2713 fps | 99.6% |
| Norma 203B | <<locked>> | 88% | 40,886 psi | 85% | 2703 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 42,409 psi | 89% | 2717 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 72% | 1811 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,060 psi | 86% | 2795 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 82% | 41,524 psi | 87% | 2648 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 86% | 40,683 psi | 85% | 2641 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 94% | 43,250 psi | 90% | 2749 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 42,047 psi | 88% | 2717 fps | 99.1% |
| Shooters World Precision | <<locked>> | 88% | 41,017 psi | 86% | 2671 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,366 psi | 89% | 2756 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,380 psi | 89% | 2703 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 42,061 psi | 88% | 2612 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 41,495 psi | 87% | 2612 fps | 99.8% |
| Somchem S335 | <<locked>> | 84% | 41,713 psi | 87% | 2621 fps | 99.7% |
| Somchem S341 | <<locked>> | 84% | 40,872 psi | 85% | 2661 fps | 96% |
| Somchem S355 | <<locked>> | 92% | 41,640 psi | 87% | 2703 fps | 96.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,609 psi | 81% | 2730 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 84% | 42,061 psi | 88% | 2615 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 41,959 psi | 88% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 40,509 psi | 85% | 2641 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 94% | 42,540 psi | 89% | 2694 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 82% | 40,640 psi | 85% | 2644 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 88% | 41,974 psi | 88% | 2684 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,452 psi | 87% | 2671 fps | 96.7% |
| Winchester 748 | <<locked>> | 82% | 42,612 psi | 89% | 2746 fps | 98.6% |
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% | 39,624 psi | 83% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,807 psi | 66% | 2480 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 36,637 psi | 77% | 2605 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 36,637 psi | 77% | 2605 fps | 98% |
| Accurate 4064 | <<locked>> | 80% | 30,081 psi | 63% | 2454 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 82% | 38,609 psi | 81% | 2628 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,101 psi | 80% | 2595 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 36,579 psi | 76% | 2612 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,158 psi | 76% | 2598 fps | 95.7% |
| Alliant Reloder-17 | 32.5 gr | 92% | 38,479 psi | 80% | 2717 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 35,563 psi | 74% | 2595 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,277 psi | 84% | 2598 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,187 psi | 76% | 2605 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 40,132 psi | 84% | 2654 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 80% | 36,347 psi | 76% | 2585 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 37,188 psi | 78% | 2625 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,983 psi | 73% | 2598 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 53% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,738 psi | 77% | 2579 fps | 95.3% |
| IMR 3031 | 25.2 gr | 80% | 32,242 psi | 67% | 2533 fps | 99% |
| IMR 4895 | <<locked>> | 84% | 37,608 psi | 79% | 2641 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,101 psi | 80% | 2595 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,171 psi | 71% | 2549 fps | 97.3% |
| Lovex S060 | <<locked>> | 82% | 39,349 psi | 82% | 2575 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 33,881 psi | 71% | 2513 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 35,375 psi | 74% | 2533 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 35,491 psi | 74% | 2556 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 38,276 psi | 80% | 2644 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,726 psi | 83% | 2661 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,396 psi | 53% | 1611 fps | 100% |
| ReloadSwiss RS 60 | 29.6 gr | 84% | 31,357 psi | 66% | 2543 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 39,233 psi | 82% | 2602 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,895 psi | 71% | 2490 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 88% | 35,462 psi | 74% | 2585 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,171 psi | 71% | 2549 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 33,881 psi | 71% | 2513 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 39,653 psi | 83% | 2697 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 39,682 psi | 83% | 2651 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,405 psi | 78% | 2520 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,530 psi | 64% | 2379 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 36,593 psi | 76% | 2516 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 38,232 psi | 80% | 2608 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 36,738 psi | 77% | 2598 fps | 95.4% |
| Somchem S365 | <<locked>> | 96% | 33,794 psi | 71% | 2612 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 37,391 psi | 78% | 2526 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,561 psi | 68% | 2493 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 33,359 psi | 70% | 2487 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 32,648 psi | 68% | 2484 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 37,971 psi | 79% | 2589 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 32,184 psi | 67% | 2470 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 38,551 psi | 81% | 2608 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,827 psi | 83% | 2690 fps | 98.1% |
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 52 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | Speer Deep Curl Soft Point. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,795 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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, Alliant Reloder-17, IMR 3031 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Speer Deep Curl Soft Point 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.