Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 80gr | Remington HP Power-Lokt bullet and 41 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 BL-C2 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>> | 86% | 42,351 psi | 88% | 2789 fps | 99.9% |
| Accurate 2460 | <<locked>> | 82% | 40,640 psi | 85% | 2779 fps | 98.1% |
| Accurate 2495 | <<locked>> | 92% | 41,408 psi | 87% | 2828 fps | 99.9% |
| Accurate 2520 | <<locked>> | 86% | 41,089 psi | 86% | 2825 fps | 97.8% |
| Accurate 4064 | <<locked>> | 94% | 41,118 psi | 86% | 2848 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,510 psi | 87% | 2799 fps | 96% |
| Alliant AR-Comp | <<locked>> | 88% | 42,235 psi | 88% | 2871 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 42,670 psi | 89% | 2812 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,365 psi | 86% | 2749 fps | 96.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,829 psi | 87% | 2858 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 82% | 41,292 psi | 86% | 2818 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 82% | 42,119 psi | 88% | 2835 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 42,873 psi | 90% | 2907 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,475 psi | 70% | 1850 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 42,917 psi | 90% | 2910 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 41,510 psi | 87% | 2799 fps | 96% |
| Lovex D073.5 | <<locked>> | 84% | 43,236 psi | 90% | 2828 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 90% | 42,279 psi | 88% | 2861 fps | 98.1% |
| Lovex S062 | <<locked>> | 92% | 41,191 psi | 86% | 2805 fps | 96.1% |
| Norma 201 | <<locked>> | 90% | 43,192 psi | 90% | 2831 fps | 96.6% |
| Norma 202 | <<locked>> | 88% | 40,886 psi | 85% | 2808 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,533 psi | 70% | 1890 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,147 psi | 86% | 2792 fps | 97.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,510 psi | 87% | 2917 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 86% | 41,843 psi | 87% | 2792 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 90% | 41,002 psi | 86% | 2779 fps | 96% |
| Rottweil R 903 | <<locked>> | 98% | 43,192 psi | 90% | 2881 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 90% | 42,279 psi | 88% | 2861 fps | 98.1% |
| Shooters World Precision | <<locked>> | 92% | 41,191 psi | 86% | 2805 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 42,844 psi | 90% | 2759 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,090 psi | 88% | 2756 fps | 99.2% |
| Somchem S321 | <<locked>> | 84% | 41,582 psi | 87% | 2818 fps | 96.5% |
| Somchem S335 | <<locked>> | 88% | 42,177 psi | 88% | 2766 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 84% | 43,149 psi | 90% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,612 psi | 89% | 2766 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 92% | 41,974 psi | 88% | 2831 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 90% | 41,162 psi | 86% | 2789 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 98% | 42,815 psi | 89% | 2828 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 86% | 41,495 psi | 87% | 2792 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 92% | 42,221 psi | 88% | 2822 fps | 98.5% |
| Winchester 748 | <<locked>> | 88% | 42,743 psi | 89% | 2884 fps | 97.4% |
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% | 34,983 psi | 73% | 2635 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 37,913 psi | 79% | 2720 fps | 97.4% |
| Accurate 2495 | <<locked>> | 80% | 27,572 psi | 58% | 2503 fps | 97.3% |
| Accurate 2520 | <<locked>> | 80% | 33,257 psi | 69% | 2648 fps | 95.4% |
| Accurate 4064 | <<locked>> | 84% | 29,791 psi | 62% | 2579 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 38,812 psi | 81% | 2740 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 32,184 psi | 67% | 2654 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,147 psi | 84% | 2762 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,564 psi | 76% | 2644 fps | 95.2% |
| Hodgdon BL-C2 | 29.5 gr | 84% | 36,390 psi | 76% | 2740 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 38,856 psi | 81% | 2769 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 80% | 39,320 psi | 82% | 2776 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,118 psi | 84% | 2844 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,831 psi | 52% | 1657 fps | 100% |
| IMR 3031 | 25.5 gr | 80% | 30,821 psi | 64% | 2628 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 84% | 38,812 psi | 81% | 2740 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 80% | 37,666 psi | 79% | 2713 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 32,169 psi | 67% | 2631 fps | 95% |
| Lovex S062 | <<locked>> | 90% | 38,899 psi | 81% | 2756 fps | 95.4% |
| Norma 201 | <<locked>> | 86% | 38,072 psi | 80% | 2723 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 31,531 psi | 66% | 2589 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,976 psi | 52% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,406 psi | 80% | 2733 fps | 96.7% |
| ReloadSwiss RS 60 | 31.8 gr | 92% | 36,347 psi | 76% | 2789 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 35,201 psi | 74% | 2644 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 88% | 38,653 psi | 81% | 2726 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 96% | 40,161 psi | 84% | 2818 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 32,169 psi | 67% | 2631 fps | 95% |
| Shooters World Precision | <<locked>> | 90% | 38,899 psi | 81% | 2756 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,663 psi | 70% | 2559 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 28,950 psi | 60% | 2457 fps | 95.7% |
| Somchem S321 | <<locked>> | 82% | 38,899 psi | 81% | 2762 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 32,866 psi | 69% | 2559 fps | 97% |
| Vihtavuori N130 | <<locked>> | 80% | 38,305 psi | 80% | 2667 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 33,533 psi | 70% | 2575 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 80% | 28,529 psi | 60% | 2523 fps | 97.5% |
| Vihtavuori N140 | <<locked>> | 80% | 29,660 psi | 62% | 2516 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 94% | 37,507 psi | 78% | 2720 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 84% | 38,725 psi | 81% | 2733 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 84% | 32,489 psi | 68% | 2605 fps | 95.7% |
| Winchester 748 | <<locked>> | 84% | 37,289 psi | 78% | 2766 fps | 95.8% |
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 41 powders for 6 x 52 R BB2 loaded with the .243 | 80gr | Remington HP Power-Lokt. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,850 fps to 2,917 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 41 of the 41 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 80.0 gr projectile in 0.243" calls for a 1:10.0 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, Hodgdon BL-C2, IMR 3031 rank at the top here: for 6 x 52 R BB2 with the .243 | 80gr | Remington HP Power-Lokt 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.