Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 85gr | Nosler Partition bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 and Accurate 2495.
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% | 42,424 psi | 89% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 41,858 psi | 87% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 41,379 psi | 86% | 2762 fps | 98.5% |
| Accurate 4064 | <<locked>> | 92% | 42,061 psi | 88% | 2795 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 41,510 psi | 87% | 2733 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 86% | 42,511 psi | 89% | 2795 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,234 psi | 86% | 2772 fps | 96.6% |
| Bofors RP3 | <<locked>> | 92% | 40,973 psi | 86% | 2779 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,234 psi | 86% | 2684 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 86% | 42,003 psi | 88% | 2795 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 86% | 41,858 psi | 87% | 2772 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,902 psi | 90% | 2841 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,982 psi | 71% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 43,279 psi | 90% | 2782 fps | 96.6% |
| IMR 3031 | <<locked>> | 88% | 43,236 psi | 90% | 2841 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 43,265 psi | 90% | 2828 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 84% | 41,510 psi | 87% | 2733 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 88% | 42,612 psi | 89% | 2799 fps | 98.8% |
| Lovex S060 | <<locked>> | 86% | 42,554 psi | 89% | 2707 fps | 95.8% |
| Lovex S062 | <<locked>> | 90% | 41,307 psi | 86% | 2743 fps | 97% |
| Norma 201 | <<locked>> | 86% | 40,843 psi | 85% | 2720 fps | 96.9% |
| Norma 202 | <<locked>> | 86% | 40,988 psi | 86% | 2740 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 43,134 psi | 90% | 2795 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,084 psi | 71% | 1850 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,771 psi | 87% | 2871 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 84% | 42,337 psi | 88% | 2733 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 88% | 41,046 psi | 86% | 2713 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 94% | 40,872 psi | 85% | 2769 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 42,612 psi | 89% | 2799 fps | 98.8% |
| Shooters World Precision | <<locked>> | 90% | 41,307 psi | 86% | 2743 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 43,105 psi | 90% | 2785 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 43,105 psi | 90% | 2697 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 42,395 psi | 89% | 2697 fps | 99.7% |
| Somchem S321 | <<locked>> | 82% | 41,669 psi | 87% | 2756 fps | 97.3% |
| Somchem S335 | <<locked>> | 86% | 42,134 psi | 88% | 2697 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 41,872 psi | 87% | 2776 fps | 96.3% |
| Vihtavuori N130 | <<locked>> | 82% | 43,033 psi | 90% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,989 psi | 90% | 2703 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 42,221 psi | 88% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 41,220 psi | 86% | 2723 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 96% | 42,859 psi | 90% | 2766 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 84% | 41,481 psi | 87% | 2726 fps | 97% |
| Vihtavuori N540 | <<locked>> | 90% | 42,279 psi | 88% | 2756 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,250 psi | 88% | 2743 fps | 96% |
| Winchester 748 | <<locked>> | 86% | 42,859 psi | 90% | 2818 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,047 psi | 88% | 2782 fps | 96.4% |
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% | 37,695 psi | 79% | 2625 fps | 99.8% |
| Accurate 2495 | 26.2 gr | 80% | 29,907 psi | 62% | 2503 fps | 98.7% |
| Accurate 2520 | <<locked>> | 80% | 35,998 psi | 75% | 2648 fps | 97.2% |
| Accurate 4064 | 26.2 gr | 80% | 28,268 psi | 59% | 2470 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,347 psi | 76% | 2618 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 34,563 psi | 72% | 2641 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,289 psi | 76% | 2667 fps | 95% |
| Bofors RP3 | <<locked>> | 90% | 38,203 psi | 80% | 2723 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,595 psi | 81% | 2628 fps | 96.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,243 psi | 72% | 2621 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 84% | 39,552 psi | 83% | 2723 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 37,608 psi | 79% | 2726 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,005 psi | 52% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 38,203 psi | 80% | 2674 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 33,054 psi | 69% | 2621 fps | 98.7% |
| IMR 4895 | <<locked>> | 88% | 40,451 psi | 85% | 2769 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 36,347 psi | 76% | 2618 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 32,256 psi | 67% | 2569 fps | 96% |
| Lovex S060 | <<locked>> | 84% | 40,263 psi | 84% | 2657 fps | 95.1% |
| Lovex S062 | <<locked>> | 86% | 36,477 psi | 76% | 2638 fps | 95.6% |
| Norma 201 | <<locked>> | 82% | 36,071 psi | 75% | 2612 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 33,721 psi | 70% | 2579 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 40,364 psi | 84% | 2740 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,208 psi | 53% | 1657 fps | 100% |
| ReloadSwiss RS 60 | 30.9 gr | 88% | 34,026 psi | 71% | 2674 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 37,420 psi | 78% | 2628 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 84% | 36,216 psi | 76% | 2608 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 92% | 38,116 psi | 80% | 2710 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,256 psi | 67% | 2569 fps | 96% |
| Shooters World Precision | <<locked>> | 86% | 36,477 psi | 76% | 2638 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 40,350 psi | 84% | 2730 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,737 psi | 75% | 2546 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,037 psi | 61% | 2398 fps | 96.6% |
| Somchem S321 | <<locked>> | 80% | 38,972 psi | 81% | 2700 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 34,940 psi | 73% | 2546 fps | 98.3% |
| Somchem S355 | <<locked>> | 92% | 39,494 psi | 83% | 2726 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 40,567 psi | 85% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,650 psi | 74% | 2556 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 30,734 psi | 64% | 2516 fps | 98.8% |
| Vihtavuori N140 | <<locked>> | 80% | 31,676 psi | 66% | 2510 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 90% | 35,157 psi | 73% | 2605 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 36,143 psi | 76% | 2612 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 30,574 psi | 64% | 2490 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,291 psi | 82% | 2680 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 34,983 psi | 73% | 2644 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 39,320 psi | 82% | 2726 fps | 95.6% |
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 46 powders for 6 x 52 R BB2 loaded with the .243 | 85gr | Nosler Partition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,811 fps to 2,871 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 46 of the 46 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 85.0 gr projectile in 0.243" calls for a 1:11.0 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, Accurate 4064, Accurate 2495 rank at the top here: for 6 x 52 R BB2 with the .243 | 85gr | Nosler Partition 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.