Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 80gr | Fox Classic Hunter bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Winchester 748.
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% | 41,176 psi | 86% | 2759 fps | 99.8% |
| Accurate 2460 | <<locked>> | 84% | 42,061 psi | 88% | 2799 fps | 98.2% |
| Accurate 2495 | <<locked>> | 94% | 42,424 psi | 89% | 2841 fps | 99.9% |
| Accurate 2520 | <<locked>> | 88% | 42,685 psi | 89% | 2848 fps | 98% |
| Accurate 4064 | <<locked>> | 96% | 42,670 psi | 89% | 2871 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 43,047 psi | 90% | 2818 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 88% | 40,988 psi | 86% | 2841 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 42,119 psi | 88% | 2851 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 41,800 psi | 87% | 2785 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 42,801 psi | 89% | 2769 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 40,509 psi | 85% | 2822 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 84% | 43,192 psi | 90% | 2844 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 82% | 41,118 psi | 86% | 2805 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,272 psi | 70% | 1834 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 41,278 psi | 86% | 2867 fps | 99.5% |
| IMR 4198 | <<locked>> | 82% | 42,612 psi | 89% | 2759 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 43,047 psi | 90% | 2818 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 84% | 42,221 psi | 88% | 2802 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 90% | 40,901 psi | 85% | 2825 fps | 97.6% |
| Lovex S062 | <<locked>> | 94% | 42,743 psi | 89% | 2828 fps | 96.4% |
| Norma 201 | <<locked>> | 90% | 42,235 psi | 88% | 2802 fps | 96.1% |
| Norma 202 | <<locked>> | 90% | 41,901 psi | 88% | 2818 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,315 psi | 70% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 42,569 psi | 89% | 2812 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 43,004 psi | 90% | 2940 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 86% | 40,741 psi | 85% | 2759 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 92% | 42,453 psi | 89% | 2799 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 40,901 psi | 85% | 2825 fps | 97.6% |
| Shooters World Precision | <<locked>> | 94% | 42,743 psi | 89% | 2828 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 42,163 psi | 88% | 2792 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 41,800 psi | 87% | 2730 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 41,162 psi | 86% | 2730 fps | 99% |
| Somchem S321 | <<locked>> | 86% | 43,178 psi | 90% | 2841 fps | 96.7% |
| Somchem S335 | <<locked>> | 88% | 41,234 psi | 86% | 2736 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 84% | 42,003 psi | 88% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 41,524 psi | 87% | 2736 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 92% | 40,828 psi | 85% | 2802 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 92% | 42,293 psi | 88% | 2802 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 98% | 41,118 psi | 86% | 2785 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 88% | 43,091 psi | 90% | 2815 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 92% | 40,988 psi | 86% | 2789 fps | 98.1% |
| Winchester 748 | <<locked>> | 88% | 41,466 psi | 87% | 2848 fps | 96.9% |
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% | 34,200 psi | 71% | 2608 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 36,840 psi | 77% | 2687 fps | 96.9% |
| Accurate 2495 | <<locked>> | 80% | 26,513 psi | 55% | 2467 fps | 96.7% |
| Accurate 2520 | <<locked>> | 82% | 34,708 psi | 73% | 2674 fps | 95.8% |
| Accurate 4064 | <<locked>> | 86% | 30,647 psi | 64% | 2595 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 40,176 psi | 84% | 2759 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 31,401 psi | 66% | 2628 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 39,624 psi | 83% | 2799 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,262 psi | 82% | 2736 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 37,724 psi | 79% | 2661 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 86% | 37,739 psi | 79% | 2762 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 37,739 psi | 79% | 2733 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 80% | 38,319 psi | 80% | 2743 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,816 psi | 52% | 1647 fps | 100% |
| IMR 3031 | 24.8 gr | 80% | 29,820 psi | 62% | 2592 fps | 96.7% |
| IMR 4198 | <<locked>> | 80% | 40,045 psi | 84% | 2710 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 40,176 psi | 84% | 2759 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 80% | 36,666 psi | 77% | 2680 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 84% | 33,185 psi | 69% | 2651 fps | 95.2% |
| Lovex S062 | <<locked>> | 92% | 40,263 psi | 84% | 2776 fps | 95.6% |
| Norma 201 | <<locked>> | 88% | 39,798 psi | 83% | 2753 fps | 95.4% |
| Norma 202 | <<locked>> | 82% | 32,503 psi | 68% | 2605 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,584 psi | 51% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,391 psi | 78% | 2700 fps | 96.2% |
| ReloadSwiss RS 60 | 31.7 gr | 94% | 37,869 psi | 79% | 2815 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 34,069 psi | 71% | 2605 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 90% | 40,030 psi | 84% | 2746 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 33,185 psi | 69% | 2651 fps | 95.2% |
| Shooters World Precision | <<locked>> | 92% | 40,263 psi | 84% | 2776 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,552 psi | 83% | 2740 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,634 psi | 68% | 2523 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 28,094 psi | 59% | 2421 fps | 95.1% |
| Somchem S321 | <<locked>> | 82% | 37,942 psi | 79% | 2730 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 31,908 psi | 67% | 2526 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 80% | 37,188 psi | 78% | 2638 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 32,489 psi | 68% | 2539 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 80% | 27,470 psi | 57% | 2487 fps | 96.9% |
| Vihtavuori N140 | <<locked>> | 82% | 30,879 psi | 65% | 2543 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 96% | 38,682 psi | 81% | 2736 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 86% | 40,118 psi | 84% | 2753 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 84% | 31,618 psi | 66% | 2575 fps | 95.2% |
| Winchester 748 | 28.3 gr | 84% | 36,419 psi | 76% | 2733 fps | 95.2% |
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 42 powders for 6 x 52 R BB2 loaded with the .243 | 80gr | Fox Classic Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,834 fps to 2,940 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 42 of the 42 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 1:9.0 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, IMR 3031, Winchester 748 rank at the top here: for 6 x 52 R BB2 with the .243 | 80gr | Fox Classic Hunter 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.