Load Specifications
Bullet:.243 | 90gr | Swift Scirocco
Bullet Manufacturer:Swift
Bullet Weight:90 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:6 x 52 R BB2 load data
Case Length (l3):2.04"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:40 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:47,862 psi
Recommended Twist Rate:1:8.5
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Swift Scirocco bullet and 101 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 Accurate 4064.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 42,192 psi | 88% | 2625 fps | 100% |
| Accurate 2015 | <<locked>> | 84% | 42,192 psi | 88% | 2625 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,888 psi | 90% | 2664 fps | 99.2% |
| Accurate 2495 | <<locked>> | 90% | 41,147 psi | 86% | 2661 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 41,640 psi | 87% | 2671 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 40,785 psi | 85% | 2664 fps | 98.6% |
| Accurate 2520 | <<locked>> | 84% | 41,220 psi | 86% | 2671 fps | 98.7% |
| Accurate 4064 | <<locked>> | 92% | 41,060 psi | 86% | 2687 fps | 99.4% |
| Accurate 4064 | <<locked>> | 92% | 41,510 psi | 87% | 2697 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 41,365 psi | 86% | 2667 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 40,712 psi | 85% | 2628 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 41,133 psi | 86% | 2638 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 86% | 41,945 psi | 88% | 2694 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 42,032 psi | 88% | 2697 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 40,770 psi | 85% | 2677 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 41,176 psi | 86% | 2687 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 41,133 psi | 86% | 2753 fps | 95.9% |
| Bofors RP3 | <<locked>> | 94% | 42,859 psi | 90% | 2730 fps | 97.3% |
| Bofors RP3 | <<locked>> | 92% | 40,669 psi | 85% | 2690 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 43,120 psi | 90% | 2631 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,031 psi | 86% | 2595 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 41,611 psi | 87% | 2697 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 86% | 41,640 psi | 87% | 2700 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 86% | 41,568 psi | 87% | 2677 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 86% | 41,597 psi | 87% | 2680 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,279 psi | 88% | 2740 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,656 psi | 89% | 2749 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 71% | 1736 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,171 psi | 71% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 42,685 psi | 89% | 2680 fps | 96.7% |
| Hodgdon VARGET | <<locked>> | 88% | 43,062 psi | 90% | 2690 fps | 96.8% |
| IMR 3031 | <<locked>> | 88% | 42,772 psi | 89% | 2740 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 42,815 psi | 89% | 2743 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,380 psi | 89% | 2720 fps | 96.2% |
| IMR 4895 | <<locked>> | 90% | 42,786 psi | 89% | 2733 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 84% | 40,712 psi | 85% | 2628 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 84% | 41,133 psi | 86% | 2638 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 82% | 42,743 psi | 89% | 2664 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 82% | 43,178 psi | 90% | 2674 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 88% | 42,134 psi | 88% | 2700 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 88% | 42,148 psi | 88% | 2703 fps | 98.9% |
| Lovex S060 | <<locked>> | 86% | 42,163 psi | 88% | 2608 fps | 96% |
| Lovex S060 | <<locked>> | 86% | 42,569 psi | 89% | 2618 fps | 96.1% |
| Lovex S062 | <<locked>> | 90% | 41,089 psi | 86% | 2651 fps | 97.2% |
| Lovex S062 | <<locked>> | 90% | 41,104 psi | 86% | 2654 fps | 97.3% |
| Norma 201 | <<locked>> | 88% | 42,931 psi | 90% | 2671 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 40,451 psi | 85% | 2625 fps | 97% |
| Norma 202 | <<locked>> | 88% | 43,178 psi | 90% | 2694 fps | 99.4% |
| Norma 202 | <<locked>> | 88% | 43,178 psi | 90% | 2697 fps | 99.4% |
| Norma 203B | <<locked>> | 90% | 41,089 psi | 86% | 2687 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,395 psi | 89% | 2694 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,757 psi | 89% | 2703 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 71% | 1775 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,330 psi | 72% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 43,134 psi | 90% | 2674 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,089 psi | 86% | 2766 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 41,423 psi | 87% | 2776 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 84% | 41,655 psi | 87% | 2631 fps | 99% |
| Rottweil R 901 | <<locked>> | 84% | 42,076 psi | 88% | 2641 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 90% | 43,207 psi | 90% | 2667 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 88% | 41,089 psi | 86% | 2631 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 96% | 42,757 psi | 89% | 2720 fps | 97% |
| Rottweil R 903 | <<locked>> | 96% | 43,207 psi | 90% | 2730 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 42,134 psi | 88% | 2700 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 42,148 psi | 88% | 2703 fps | 98.9% |
| Shooters World Precision | <<locked>> | 90% | 41,089 psi | 86% | 2651 fps | 97.2% |
| Shooters World Precision | <<locked>> | 90% | 41,104 psi | 86% | 2654 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,598 psi | 89% | 2736 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,308 psi | 88% | 2680 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,743 psi | 89% | 2690 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,496 psi | 89% | 2598 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,540 psi | 89% | 2602 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,742 psi | 87% | 2595 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 42,177 psi | 88% | 2605 fps | 99.7% |
| Somchem S321 | <<locked>> | 82% | 41,089 psi | 86% | 2654 fps | 97.4% |
| Somchem S321 | <<locked>> | 82% | 41,481 psi | 87% | 2667 fps | 97.5% |
| Somchem S335 | <<locked>> | 86% | 41,742 psi | 87% | 2602 fps | 99.6% |
| Somchem S335 | <<locked>> | 86% | 41,742 psi | 87% | 2602 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 41,524 psi | 87% | 2680 fps | 96.4% |
| Somchem S355 | <<locked>> | 94% | 41,539 psi | 87% | 2684 fps | 96.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,984 psi | 75% | 2644 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 42,598 psi | 89% | 2592 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 42,627 psi | 89% | 2595 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,366 psi | 89% | 2602 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,438 psi | 89% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,785 psi | 87% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 42,264 psi | 88% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 43,134 psi | 90% | 2667 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 88% | 41,017 psi | 86% | 2631 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 96% | 42,250 psi | 88% | 2664 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 96% | 42,641 psi | 89% | 2677 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 84% | 40,698 psi | 85% | 2625 fps | 97% |
| Vihtavuori N530 | <<locked>> | 84% | 41,118 psi | 86% | 2635 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 90% | 41,930 psi | 88% | 2664 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 90% | 41,872 psi | 87% | 2664 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 41,655 psi | 87% | 2644 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 41,539 psi | 87% | 2648 fps | 96.1% |
| Winchester 748 | <<locked>> | 86% | 42,409 psi | 89% | 2720 fps | 98.3% |
| Winchester 748 | <<locked>> | 86% | 42,380 psi | 89% | 2723 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,394 psi | 86% | 2680 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,814 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% | 37,246 psi | 78% | 2530 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 37,304 psi | 78% | 2533 fps | 99.8% |
| Accurate 2460 | <<locked>> | 80% | 39,943 psi | 83% | 2608 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 29,501 psi | 62% | 2411 fps | 98.8% |
| Accurate 2495 | <<locked>> | 80% | 29,907 psi | 62% | 2425 fps | 98.9% |
| Accurate 2520 | <<locked>> | 80% | 35,636 psi | 74% | 2556 fps | 97.4% |
| Accurate 2520 | <<locked>> | 80% | 35,694 psi | 75% | 2559 fps | 97.5% |
| Accurate 4064 | 25 gr | 80% | 27,949 psi | 58% | 2382 fps | 95.9% |
| Accurate 4064 | 25 gr | 80% | 28,282 psi | 59% | 2395 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 38,943 psi | 81% | 2618 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,114 psi | 75% | 2526 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,129 psi | 75% | 2530 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 34,113 psi | 71% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 34,548 psi | 72% | 2556 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,013 psi | 75% | 2575 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,042 psi | 75% | 2579 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 38,798 psi | 81% | 2697 fps | 95% |
| Bofors RP3 | <<locked>> | 88% | 35,128 psi | 73% | 2569 fps | 95% |
| Bofors RP3 | <<locked>> | 88% | 35,520 psi | 74% | 2579 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,319 psi | 80% | 2536 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,334 psi | 80% | 2539 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,605 psi | 70% | 2523 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,982 psi | 71% | 2536 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 84% | 38,754 psi | 81% | 2618 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 82% | 36,869 psi | 77% | 2579 fps | 95% |
| Hodgdon LEVERevolution | 28.7 gr | 86% | 37,202 psi | 78% | 2631 fps | 95.6% |
| Hodgdon LEVERevolution | 28.7 gr | 86% | 37,536 psi | 78% | 2641 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 53% | 1555 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,150 psi | 53% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 37,826 psi | 79% | 2582 fps | 95.2% |
| Hodgdon VARGET | <<locked>> | 84% | 37,855 psi | 79% | 2585 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 32,692 psi | 68% | 2530 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 33,098 psi | 69% | 2539 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 39,871 psi | 83% | 2671 fps | 95.4% |
| IMR 4895 | <<locked>> | 88% | 40,263 psi | 84% | 2680 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 36,114 psi | 75% | 2526 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,129 psi | 75% | 2530 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 80% | 39,798 psi | 83% | 2608 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 80% | 40,234 psi | 84% | 2618 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 31,763 psi | 66% | 2477 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 80% | 32,155 psi | 67% | 2487 fps | 96.3% |
| Lovex S060 | <<locked>> | 84% | 39,769 psi | 83% | 2559 fps | 95.3% |
| Lovex S060 | <<locked>> | 84% | 40,176 psi | 84% | 2572 fps | 95.4% |
| Lovex S062 | <<locked>> | 86% | 36,071 psi | 75% | 2543 fps | 95.7% |
| Lovex S062 | <<locked>> | 84% | 34,301 psi | 72% | 2507 fps | 95.1% |
| Norma 201 | <<locked>> | 82% | 35,447 psi | 74% | 2513 fps | 95.4% |
| Norma 201 | <<locked>> | 82% | 35,868 psi | 75% | 2526 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 33,417 psi | 70% | 2490 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 33,446 psi | 70% | 2490 fps | 97.4% |
| Norma 203B | <<locked>> | 88% | 38,682 psi | 81% | 2638 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,929 psi | 83% | 2641 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,900 psi | 83% | 2644 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,164 psi | 53% | 1585 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,396 psi | 53% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,611 psi | 85% | 2625 fps | 98.2% |
| ReloadSwiss RS 60 | 29.5 gr | 88% | 33,808 psi | 71% | 2585 fps | 95.7% |
| ReloadSwiss RS 60 | 29.5 gr | 88% | 34,113 psi | 71% | 2595 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 36,956 psi | 77% | 2533 fps | 98% |
| Rottweil R 901 | <<locked>> | 80% | 37,014 psi | 77% | 2536 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 36,056 psi | 75% | 2520 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 84% | 36,071 psi | 75% | 2523 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 92% | 37,710 psi | 79% | 2618 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 92% | 37,695 psi | 79% | 2618 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,763 psi | 66% | 2477 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,155 psi | 67% | 2487 fps | 96.3% |
| Shooters World Precision | <<locked>> | 86% | 36,071 psi | 75% | 2543 fps | 95.7% |
| Shooters World Precision | <<locked>> | 84% | 34,301 psi | 72% | 2507 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 39,769 psi | 83% | 2677 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,856 psi | 83% | 2631 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,871 psi | 83% | 2631 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,273 psi | 74% | 2454 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,302 psi | 74% | 2454 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,631 psi | 60% | 2310 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,718 psi | 60% | 2313 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 38,305 psi | 80% | 2598 fps | 96.6% |
| Somchem S321 | <<locked>> | 80% | 38,696 psi | 81% | 2608 fps | 96.8% |
| Somchem S335 | <<locked>> | 80% | 34,577 psi | 72% | 2454 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 34,983 psi | 73% | 2464 fps | 98.5% |
| Somchem S355 | <<locked>> | 92% | 38,667 psi | 81% | 2621 fps | 95.6% |
| Somchem S355 | <<locked>> | 90% | 36,782 psi | 77% | 2582 fps | 95% |
| Somchem S365 | <<locked>> | 98% | 33,910 psi | 71% | 2589 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 40,059 psi | 84% | 2546 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,103 psi | 84% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,186 psi | 74% | 2461 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 35,230 psi | 74% | 2467 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 30,240 psi | 63% | 2421 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,327 psi | 63% | 2428 fps | 99% |
| Vihtavuori N140 | <<locked>> | 80% | 31,401 psi | 66% | 2421 fps | 97.1% |
| Vihtavuori N140 | <<locked>> | 80% | 31,473 psi | 66% | 2425 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 88% | 32,590 psi | 68% | 2464 fps | 95% |
| Vihtavuori N150 | <<locked>> | 88% | 32,938 psi | 69% | 2474 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 35,940 psi | 75% | 2523 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 35,998 psi | 75% | 2526 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 30,110 psi | 63% | 2402 fps | 96% |
| Vihtavuori N540 | <<locked>> | 80% | 30,458 psi | 64% | 2411 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,957 psi | 81% | 2589 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,247 psi | 82% | 2598 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 34,606 psi | 72% | 2552 fps | 96.1% |
| Winchester 748 | <<locked>> | 80% | 34,621 psi | 72% | 2556 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 38,972 psi | 81% | 2635 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,666 psi | 77% | 2585 fps | 95% |
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 101 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | Swift Scirocco. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,776 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,776 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 101 of the 101 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 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, 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 LEVERevolution, Accurate 4064 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Swift Scirocco 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.