Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Nosler AccuBond 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, Accurate 4064 and Bofors RP3.
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% | 42,279 psi | 88% | 2628 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,960 psi | 90% | 2667 fps | 99.2% |
| Accurate 2495 | <<locked>> | 90% | 41,684 psi | 87% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 40,843 psi | 85% | 2664 fps | 98.6% |
| Accurate 4064 | <<locked>> | 92% | 41,568 psi | 87% | 2700 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 41,408 psi | 87% | 2667 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 41,205 psi | 86% | 2641 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 86% | 42,076 psi | 88% | 2700 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,249 psi | 86% | 2690 fps | 96.9% |
| Bofors RP3 | <<locked>> | 92% | 40,306 psi | 84% | 2680 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 40,698 psi | 85% | 2589 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 41,655 psi | 87% | 2700 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 86% | 41,640 psi | 87% | 2680 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,728 psi | 89% | 2749 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,779 psi | 71% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 43,149 psi | 90% | 2694 fps | 96.8% |
| IMR 3031 | <<locked>> | 88% | 42,888 psi | 90% | 2743 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,859 psi | 90% | 2733 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 84% | 41,205 psi | 86% | 2641 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 82% | 42,801 psi | 89% | 2667 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 88% | 42,250 psi | 88% | 2703 fps | 98.9% |
| Lovex S060 | <<locked>> | 86% | 42,641 psi | 89% | 2621 fps | 96.1% |
| Lovex S062 | <<locked>> | 90% | 41,147 psi | 86% | 2654 fps | 97.3% |
| Norma 201 | <<locked>> | 88% | 43,004 psi | 90% | 2677 fps | 97.6% |
| Norma 202 | <<locked>> | 88% | 43,250 psi | 90% | 2697 fps | 99.4% |
| Norma 203B | <<locked>> | 90% | 41,133 psi | 86% | 2687 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,801 psi | 89% | 2703 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,360 psi | 72% | 1781 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,133 psi | 86% | 2769 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 84% | 41,756 psi | 87% | 2635 fps | 99% |
| Rottweil R 902 | <<locked>> | 88% | 40,756 psi | 85% | 2625 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 96% | 43,265 psi | 90% | 2730 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 42,250 psi | 88% | 2703 fps | 98.9% |
| Shooters World Precision | <<locked>> | 90% | 41,147 psi | 86% | 2654 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,221 psi | 88% | 2726 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,786 psi | 89% | 2690 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,583 psi | 89% | 2602 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,814 psi | 87% | 2598 fps | 99.7% |
| Somchem S321 | <<locked>> | 82% | 41,147 psi | 86% | 2661 fps | 97.4% |
| Somchem S335 | <<locked>> | 86% | 41,829 psi | 87% | 2602 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 41,582 psi | 87% | 2684 fps | 96.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,013 psi | 75% | 2644 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 42,699 psi | 89% | 2595 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,467 psi | 89% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,887 psi | 88% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 40,683 psi | 85% | 2625 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 96% | 42,728 psi | 89% | 2677 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 84% | 41,191 psi | 86% | 2635 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 90% | 41,959 psi | 88% | 2664 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 41,640 psi | 87% | 2648 fps | 96.1% |
| Winchester 748 | <<locked>> | 86% | 42,467 psi | 89% | 2723 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,829 psi | 87% | 2694 fps | 96.6% |
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% | 37,318 psi | 78% | 2533 fps | 99.8% |
| Accurate 2460 | <<locked>> | 80% | 40,437 psi | 84% | 2621 fps | 98.8% |
| Accurate 2495 | <<locked>> | 80% | 29,602 psi | 62% | 2415 fps | 98.9% |
| Accurate 2520 | <<locked>> | 80% | 35,708 psi | 75% | 2559 fps | 97.5% |
| Accurate 4064 | 24.9 gr | 80% | 28,050 psi | 59% | 2388 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 84% | 38,972 psi | 81% | 2618 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,187 psi | 76% | 2530 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 34,606 psi | 72% | 2556 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,085 psi | 75% | 2579 fps | 95.3% |
| Bofors RP3 | 28.4 gr | 88% | 35,534 psi | 74% | 2579 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,363 psi | 80% | 2539 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,997 psi | 71% | 2536 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 84% | 39,247 psi | 82% | 2631 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 37,246 psi | 78% | 2631 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,164 psi | 53% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 37,913 psi | 79% | 2585 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 32,764 psi | 68% | 2533 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 40,350 psi | 84% | 2680 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 36,187 psi | 76% | 2530 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 80% | 40,321 psi | 84% | 2618 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 32,169 psi | 67% | 2487 fps | 96.3% |
| Lovex S060 | <<locked>> | 84% | 40,219 psi | 84% | 2572 fps | 95.4% |
| Lovex S062 | <<locked>> | 84% | 34,360 psi | 72% | 2507 fps | 95.1% |
| Norma 201 | <<locked>> | 82% | 35,911 psi | 75% | 2526 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 33,475 psi | 70% | 2493 fps | 97.4% |
| Norma 203B | <<locked>> | 88% | 38,725 psi | 81% | 2638 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,972 psi | 84% | 2644 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,425 psi | 53% | 1594 fps | 100% |
| ReloadSwiss RS 60 | 29.4 gr | 88% | 33,823 psi | 71% | 2589 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 37,057 psi | 77% | 2536 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 36,143 psi | 76% | 2523 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 92% | 37,753 psi | 79% | 2621 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,169 psi | 67% | 2487 fps | 96.3% |
| Shooters World Precision | <<locked>> | 84% | 34,360 psi | 72% | 2507 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 39,813 psi | 83% | 2677 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,914 psi | 83% | 2635 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,331 psi | 74% | 2454 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,718 psi | 60% | 2313 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 38,377 psi | 80% | 2602 fps | 96.7% |
| Somchem S335 | <<locked>> | 80% | 34,679 psi | 72% | 2457 fps | 98.4% |
| Somchem S355 | <<locked>> | 90% | 36,869 psi | 77% | 2585 fps | 95% |
| Somchem S365 | <<locked>> | 98% | 33,953 psi | 71% | 2592 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 40,176 psi | 84% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,288 psi | 74% | 2467 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 30,385 psi | 63% | 2428 fps | 99% |
| Vihtavuori N140 | <<locked>> | 80% | 31,473 psi | 66% | 2425 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 88% | 32,663 psi | 68% | 2464 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 36,042 psi | 75% | 2526 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 30,516 psi | 64% | 2411 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,914 psi | 81% | 2589 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 34,679 psi | 72% | 2556 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 39,015 psi | 82% | 2635 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 52 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | Nosler AccuBond. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,769 fps. Hodgdon TrailBoss 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 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Nosler AccuBond 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.