Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Lapua ScenarL bullet and 53 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 LEVERevolution and Winchester StaBALL Match.
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% | 42,670 psi | 89% | 2635 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 42,105 psi | 88% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 41,249 psi | 86% | 2674 fps | 98.8% |
| Accurate 4064 | <<locked>> | 92% | 41,945 psi | 88% | 2710 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 41,771 psi | 87% | 2677 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 84% | 41,539 psi | 87% | 2648 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 86% | 42,540 psi | 89% | 2707 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,205 psi | 86% | 2690 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 41,452 psi | 87% | 2762 fps | 96.1% |
| Bofors RP3 | <<locked>> | 92% | 40,669 psi | 85% | 2690 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,089 psi | 86% | 2598 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 86% | 42,003 psi | 88% | 2710 fps | 98% |
| Hodgdon H4895 | <<locked>> | 86% | 42,018 psi | 88% | 2694 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 43,047 psi | 90% | 2762 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,939 psi | 71% | 1739 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 43,076 psi | 90% | 2694 fps | 96.8% |
| IMR 3031 | <<locked>> | 88% | 43,294 psi | 90% | 2753 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 43,236 psi | 90% | 2743 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 84% | 41,539 psi | 87% | 2648 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 82% | 43,178 psi | 90% | 2677 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 88% | 42,569 psi | 89% | 2713 fps | 99% |
| Lovex S060 | <<locked>> | 86% | 42,598 psi | 89% | 2621 fps | 96.2% |
| Lovex S062 | <<locked>> | 90% | 41,539 psi | 87% | 2664 fps | 97.4% |
| Norma 201 | <<locked>> | 86% | 40,886 psi | 85% | 2638 fps | 97.2% |
| Norma 202 | <<locked>> | 86% | 40,654 psi | 85% | 2651 fps | 99.1% |
| Norma 203B | <<locked>> | 90% | 41,466 psi | 87% | 2697 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 86% | 43,134 psi | 90% | 2713 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 42,409 psi | 89% | 2641 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,098 psi | 71% | 1778 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,365 psi | 86% | 2779 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 84% | 42,148 psi | 88% | 2644 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 88% | 41,075 psi | 86% | 2631 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 94% | 40,567 psi | 85% | 2680 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 42,569 psi | 89% | 2713 fps | 99% |
| Shooters World Precision | <<locked>> | 90% | 41,539 psi | 87% | 2664 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,931 psi | 90% | 2746 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 43,105 psi | 90% | 2700 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,946 psi | 90% | 2612 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 42,134 psi | 88% | 2605 fps | 99.7% |
| Somchem S321 | <<locked>> | 82% | 41,495 psi | 87% | 2671 fps | 97.6% |
| Somchem S335 | <<locked>> | 86% | 42,177 psi | 88% | 2612 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 41,901 psi | 88% | 2694 fps | 96.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,289 psi | 76% | 2651 fps | 96.1% |
| Vihtavuori N130 | <<locked>> | 82% | 43,134 psi | 90% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,830 psi | 89% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 42,308 psi | 88% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 41,046 psi | 86% | 2635 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 96% | 43,047 psi | 90% | 2684 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 84% | 41,539 psi | 87% | 2644 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 90% | 42,293 psi | 88% | 2674 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 41,814 psi | 87% | 2654 fps | 96.3% |
| Winchester 748 | <<locked>> | 86% | 42,844 psi | 90% | 2733 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,163 psi | 88% | 2703 fps | 96.8% |
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% | 37,724 psi | 79% | 2543 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 29,979 psi | 63% | 2428 fps | 99% |
| Accurate 2520 | <<locked>> | 80% | 36,056 psi | 75% | 2569 fps | 97.6% |
| Accurate 4064 | <<locked>> | 80% | 28,369 psi | 59% | 2398 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 39,349 psi | 82% | 2628 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,521 psi | 76% | 2543 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 80% | 34,592 psi | 72% | 2559 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,434 psi | 76% | 2589 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 38,711 psi | 81% | 2700 fps | 95.1% |
| Bofors RP3 | <<locked>> | 88% | 35,549 psi | 74% | 2582 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,754 psi | 81% | 2549 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,026 psi | 71% | 2536 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 82% | 36,927 psi | 77% | 2582 fps | 95.1% |
| Hodgdon LEVERevolution | 28.2 gr | 84% | 35,418 psi | 74% | 2592 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,367 psi | 53% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 38,203 psi | 80% | 2592 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 33,141 psi | 69% | 2543 fps | 99% |
| IMR 4895 | <<locked>> | 88% | 40,321 psi | 84% | 2684 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 36,521 psi | 76% | 2543 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 80% | 40,248 psi | 84% | 2621 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 80% | 32,532 psi | 68% | 2497 fps | 96.5% |
| Lovex S060 | <<locked>> | 84% | 40,161 psi | 84% | 2572 fps | 95.5% |
| Lovex S062 | <<locked>> | 84% | 34,345 psi | 72% | 2507 fps | 95.2% |
| Norma 201 | <<locked>> | 82% | 35,882 psi | 75% | 2530 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 33,823 psi | 71% | 2503 fps | 97.6% |
| Norma 203B | <<locked>> | 88% | 38,696 psi | 81% | 2638 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 40,321 psi | 84% | 2657 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,639 psi | 83% | 2585 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,237 psi | 53% | 1591 fps | 100% |
| ReloadSwiss RS 60 | 29.6 gr | 88% | 34,084 psi | 71% | 2598 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,420 psi | 78% | 2546 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 82% | 34,360 psi | 72% | 2484 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 90% | 35,810 psi | 75% | 2579 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,532 psi | 68% | 2497 fps | 96.5% |
| Shooters World Precision | <<locked>> | 84% | 34,345 psi | 72% | 2507 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 40,089 psi | 84% | 2687 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 40,263 psi | 84% | 2644 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,708 psi | 75% | 2467 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,051 psi | 61% | 2326 fps | 97% |
| Somchem S321 | <<locked>> | 80% | 38,725 psi | 81% | 2612 fps | 96.9% |
| Somchem S335 | <<locked>> | 80% | 35,012 psi | 73% | 2467 fps | 98.6% |
| Somchem S355 | <<locked>> | 90% | 37,159 psi | 78% | 2592 fps | 95.1% |
| Somchem S365 | <<locked>> | 98% | 34,185 psi | 71% | 2598 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 40,582 psi | 85% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,665 psi | 75% | 2477 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 30,719 psi | 64% | 2438 fps | 99.1% |
| Vihtavuori N140 | <<locked>> | 80% | 31,821 psi | 66% | 2434 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 88% | 32,982 psi | 69% | 2477 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 36,361 psi | 76% | 2536 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 30,501 psi | 64% | 2415 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,523 psi | 83% | 2608 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 34,998 psi | 73% | 2566 fps | 96.4% |
| Winchester StaBALL Match | 28.4 gr | 84% | 36,680 psi | 77% | 2585 fps | 95.1% |
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 53 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | Lapua ScenarL. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,779 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 53 of the 53 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, Hodgdon LEVERevolution, Winchester StaBALL Match rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Lapua ScenarL 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.