Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Berger BT Target 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 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.
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>> | 82% | 40,799 psi | 85% | 2605 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 42,786 psi | 89% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,264 psi | 88% | 2700 fps | 99% |
| Accurate 4064 | <<locked>> | 92% | 42,569 psi | 89% | 2723 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 42,308 psi | 88% | 2694 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,134 psi | 88% | 2667 fps | 97.5% |
| Alliant AR-Comp | <<locked>> | 86% | 43,265 psi | 90% | 2723 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,163 psi | 88% | 2713 fps | 97.3% |
| Alliant Reloder-15 | <<locked>> | 90% | 42,801 psi | 89% | 2726 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 42,177 psi | 88% | 2785 fps | 96.5% |
| Bofors RP3 | <<locked>> | 92% | 41,626 psi | 87% | 2717 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,655 psi | 87% | 2615 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 86% | 42,960 psi | 90% | 2733 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 86% | 42,554 psi | 89% | 2710 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,060 psi | 86% | 2726 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,171 psi | 71% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,118 psi | 86% | 2661 fps | 96.5% |
| IMR 3031 | <<locked>> | 86% | 41,321 psi | 86% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 42,960 psi | 90% | 2680 fps | 95.9% |
| IMR 4895 | <<locked>> | 88% | 41,234 psi | 86% | 2707 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 84% | 42,134 psi | 88% | 2667 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 88% | 43,207 psi | 90% | 2730 fps | 99.1% |
| Lovex S060 | <<locked>> | 84% | 40,698 psi | 85% | 2592 fps | 95.8% |
| Lovex S062 | <<locked>> | 90% | 42,090 psi | 88% | 2680 fps | 97.6% |
| Norma 201 | <<locked>> | 86% | 41,423 psi | 87% | 2654 fps | 97.4% |
| Norma 202 | <<locked>> | 86% | 41,669 psi | 87% | 2674 fps | 99.3% |
| Norma 203B | <<locked>> | 90% | 41,989 psi | 88% | 2713 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 40,770 psi | 85% | 2671 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 42,873 psi | 90% | 2657 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,316 psi | 72% | 1788 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,076 psi | 88% | 2802 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 84% | 42,801 psi | 89% | 2664 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 88% | 41,669 psi | 87% | 2651 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 94% | 41,539 psi | 87% | 2703 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 43,207 psi | 90% | 2730 fps | 99.1% |
| Shooters World Precision | <<locked>> | 90% | 42,090 psi | 88% | 2680 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 40,756 psi | 85% | 2661 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,017 psi | 86% | 2582 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 43,120 psi | 90% | 2628 fps | 99.8% |
| Somchem S321 | <<locked>> | 82% | 42,409 psi | 89% | 2694 fps | 97.9% |
| Somchem S335 | <<locked>> | 86% | 42,757 psi | 89% | 2628 fps | 99.7% |
| Somchem S341 | <<locked>> | 86% | 42,467 psi | 89% | 2684 fps | 96.2% |
| Somchem S355 | <<locked>> | 94% | 42,844 psi | 90% | 2717 fps | 97% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,014 psi | 77% | 2677 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 40,973 psi | 86% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 42,960 psi | 90% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 42,003 psi | 88% | 2657 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 94% | 40,959 psi | 86% | 2651 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 84% | 42,119 psi | 88% | 2661 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 90% | 43,207 psi | 90% | 2697 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,844 psi | 90% | 2684 fps | 96.7% |
| Winchester 748 | <<locked>> | 84% | 40,872 psi | 85% | 2700 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,656 psi | 89% | 2717 fps | 97% |
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% | 38,043 psi | 79% | 2552 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 30,618 psi | 64% | 2448 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 36,680 psi | 77% | 2585 fps | 97.8% |
| Accurate 4064 | <<locked>> | 80% | 28,979 psi | 61% | 2418 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 84% | 39,900 psi | 83% | 2644 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,101 psi | 78% | 2559 fps | 96.1% |
| Alliant AR-Comp | <<locked>> | 80% | 35,288 psi | 74% | 2579 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,824 psi | 73% | 2559 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,364 psi | 84% | 2674 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 39,436 psi | 82% | 2723 fps | 95.5% |
| Bofors RP3 | 29 gr | 88% | 36,434 psi | 76% | 2608 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,291 psi | 82% | 2569 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,853 psi | 73% | 2562 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 37,492 psi | 78% | 2602 fps | 95.4% |
| Hodgdon LEVERevolution | 28.6 gr | 84% | 35,853 psi | 75% | 2608 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 53% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 38,754 psi | 81% | 2612 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 33,808 psi | 71% | 2562 fps | 99.2% |
| IMR 4064 | <<locked>> | 88% | 40,089 psi | 84% | 2625 fps | 95% |
| IMR 4895 | <<locked>> | 86% | 38,493 psi | 80% | 2651 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 37,101 psi | 78% | 2559 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 80% | 33,098 psi | 69% | 2516 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 38,435 psi | 80% | 2543 fps | 95.1% |
| Lovex S062 | <<locked>> | 84% | 34,896 psi | 73% | 2526 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 34,345 psi | 72% | 2497 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 34,084 psi | 71% | 2513 fps | 97.7% |
| Norma 203B | <<locked>> | 88% | 39,610 psi | 83% | 2664 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,479 psi | 80% | 2621 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,147 psi | 84% | 2602 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,556 psi | 53% | 1604 fps | 100% |
| ReloadSwiss RS 60 | 29.4 gr | 86% | 32,547 psi | 68% | 2562 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 38,101 psi | 80% | 2569 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 34,925 psi | 73% | 2503 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 90% | 36,332 psi | 76% | 2598 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,098 psi | 69% | 2516 fps | 96.8% |
| Shooters World Precision | <<locked>> | 84% | 34,896 psi | 73% | 2526 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,450 psi | 80% | 2612 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,318 psi | 76% | 2484 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,588 psi | 62% | 2343 fps | 97.3% |
| Somchem S321 | <<locked>> | 80% | 39,653 psi | 83% | 2638 fps | 97.2% |
| Somchem S335 | <<locked>> | 80% | 35,592 psi | 74% | 2484 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 39,668 psi | 83% | 2625 fps | 95.3% |
| Somchem S355 | <<locked>> | 90% | 37,695 psi | 79% | 2612 fps | 95.5% |
| Somchem S365 | <<locked>> | 98% | 34,867 psi | 73% | 2625 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 36,289 psi | 76% | 2493 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 31,401 psi | 66% | 2457 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 32,387 psi | 68% | 2454 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 88% | 33,794 psi | 71% | 2500 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 36,941 psi | 77% | 2556 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 30,995 psi | 65% | 2431 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 40,089 psi | 84% | 2628 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 35,563 psi | 74% | 2585 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 37,521 psi | 78% | 2612 fps | 95.5% |
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 | Berger BT Target. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,749 fps to 2,802 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 1:9.5 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, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Berger BT Target 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.