Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 85gr | MEN SPBT bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Lovex D073.6 and Shooters World Match Rifle.
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% | 41,843 psi | 87% | 2703 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,757 psi | 89% | 2746 fps | 98.9% |
| Accurate 2495 | <<locked>> | 90% | 40,886 psi | 85% | 2740 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 40,480 psi | 85% | 2740 fps | 98.3% |
| Accurate 4064 | <<locked>> | 92% | 41,089 psi | 86% | 2772 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 40,654 psi | 85% | 2710 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 86% | 41,437 psi | 87% | 2776 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 43,308 psi | 90% | 2808 fps | 97% |
| Bofors RP3 | <<locked>> | 94% | 42,670 psi | 89% | 2808 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 84% | 43,134 psi | 90% | 2717 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 86% | 41,176 psi | 86% | 2772 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 41,437 psi | 87% | 2759 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,177 psi | 88% | 2822 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,794 psi | 71% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 42,438 psi | 89% | 2759 fps | 96.2% |
| IMR 3031 | <<locked>> | 88% | 42,221 psi | 88% | 2815 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 40,654 psi | 85% | 2710 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 82% | 42,496 psi | 89% | 2743 fps | 98% |
| Lovex D073.6 | <<locked>> | 88% | 41,684 psi | 87% | 2772 fps | 98.5% |
| Lovex S062 | <<locked>> | 90% | 40,915 psi | 85% | 2726 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 42,743 psi | 89% | 2753 fps | 97.2% |
| Norma 202 | <<locked>> | 88% | 42,989 psi | 90% | 2776 fps | 99.2% |
| Norma 203B | <<locked>> | 92% | 43,192 psi | 90% | 2808 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,910 psi | 71% | 1841 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 43,105 psi | 90% | 2759 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 40,770 psi | 85% | 2838 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 84% | 41,379 psi | 86% | 2710 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 90% | 43,033 psi | 90% | 2749 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 96% | 42,554 psi | 89% | 2795 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 41,684 psi | 87% | 2772 fps | 98.5% |
| Shooters World Precision | <<locked>> | 90% | 40,915 psi | 85% | 2726 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,163 psi | 88% | 2674 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,553 psi | 87% | 2674 fps | 99.5% |
| Somchem S321 | <<locked>> | 82% | 40,872 psi | 85% | 2733 fps | 97% |
| Somchem S335 | <<locked>> | 86% | 41,278 psi | 86% | 2674 fps | 99.4% |
| Somchem S355 | <<locked>> | 94% | 41,060 psi | 86% | 2753 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 42,482 psi | 89% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,032 psi | 88% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,669 psi | 87% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 43,294 psi | 90% | 2756 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 96% | 42,076 psi | 88% | 2743 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 84% | 40,640 psi | 85% | 2703 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 90% | 41,495 psi | 87% | 2736 fps | 98.8% |
| Winchester 748 | <<locked>> | 86% | 42,047 psi | 88% | 2799 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,278 psi | 86% | 2762 fps | 96% |
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% | 36,767 psi | 77% | 2602 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 39,900 psi | 83% | 2690 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 29,341 psi | 61% | 2484 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 35,186 psi | 74% | 2625 fps | 96.9% |
| Accurate 4064 | <<locked>> | 80% | 27,760 psi | 58% | 2451 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,853 psi | 75% | 2602 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 33,968 psi | 71% | 2625 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 38,043 psi | 79% | 2700 fps | 95.5% |
| Bofors RP3 | <<locked>> | 90% | 37,434 psi | 78% | 2697 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,145 psi | 80% | 2612 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,911 psi | 75% | 2657 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 38,696 psi | 81% | 2700 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 39,421 psi | 82% | 2759 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,092 psi | 52% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 40,045 psi | 84% | 2710 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 32,518 psi | 68% | 2605 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 35,853 psi | 75% | 2602 fps | 95% |
| Lovex D073.5 | <<locked>> | 80% | 39,668 psi | 83% | 2684 fps | 97.3% |
| Lovex D073.6 | 27.2 gr | 80% | 31,734 psi | 66% | 2549 fps | 95.6% |
| Lovex S062 | <<locked>> | 86% | 35,984 psi | 75% | 2621 fps | 95.2% |
| Norma 201 | <<locked>> | 82% | 35,578 psi | 74% | 2595 fps | 95% |
| Norma 202 | <<locked>> | 80% | 33,185 psi | 69% | 2562 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 40,712 psi | 85% | 2759 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,295 psi | 53% | 1650 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,234 psi | 84% | 2700 fps | 97.8% |
| ReloadSwiss RS 60 | 31.1 gr | 90% | 35,708 psi | 75% | 2710 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 36,898 psi | 77% | 2612 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 35,737 psi | 75% | 2592 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 94% | 40,045 psi | 84% | 2746 fps | 95.9% |
| Shooters World Match Rifle | 27.2 gr | 80% | 31,734 psi | 66% | 2549 fps | 95.6% |
| Shooters World Precision | <<locked>> | 86% | 35,984 psi | 75% | 2621 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,215 psi | 74% | 2530 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,601 psi | 60% | 2382 fps | 96.3% |
| Somchem S321 | <<locked>> | 80% | 38,189 psi | 80% | 2677 fps | 96.2% |
| Somchem S335 | <<locked>> | 80% | 34,418 psi | 72% | 2526 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 38,740 psi | 81% | 2703 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 40,030 psi | 84% | 2628 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,143 psi | 73% | 2539 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 30,197 psi | 63% | 2497 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 31,212 psi | 65% | 2493 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 34,766 psi | 73% | 2592 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 35,665 psi | 75% | 2595 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 30,153 psi | 63% | 2474 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 34,200 psi | 71% | 2621 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 38,609 psi | 81% | 2703 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 45 powders for 6 x 52 R BB2 loaded with the .243 | 85gr | MEN SPBT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,798 fps to 2,838 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 45 of the 45 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 1:10.0 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, Lovex D073.6, Shooters World Match Rifle rank at the top here: for 6 x 52 R BB2 with the .243 | 85gr | MEN SPBT 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.