Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | SUS-TAC HPT bullet and 49 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 IMR 3031.
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% | 40,988 psi | 86% | 2595 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 41,829 psi | 87% | 2638 fps | 98.9% |
| Accurate 2495 | <<locked>> | 92% | 42,699 psi | 89% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,366 psi | 89% | 2684 fps | 98.8% |
| Accurate 4064 | <<locked>> | 94% | 42,627 psi | 89% | 2710 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 42,888 psi | 90% | 2687 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,656 psi | 89% | 2657 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 86% | 40,741 psi | 85% | 2667 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 43,207 psi | 90% | 2746 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,395 psi | 89% | 2700 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 98% | 42,714 psi | 89% | 2772 fps | 96.1% |
| Bofors RP3 | <<locked>> | 94% | 41,930 psi | 88% | 2703 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,569 psi | 89% | 2612 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 43,294 psi | 90% | 2723 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 82% | 42,612 psi | 89% | 2674 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 88% | 43,163 psi | 90% | 2700 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 41,437 psi | 87% | 2713 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 71% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,727 psi | 87% | 2654 fps | 96.2% |
| IMR 3031 | <<locked>> | 88% | 41,568 psi | 87% | 2710 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 42,656 psi | 89% | 2657 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 82% | 41,742 psi | 87% | 2638 fps | 98% |
| Lovex D073.6 | <<locked>> | 88% | 40,683 psi | 85% | 2664 fps | 98.5% |
| Lovex S062 | <<locked>> | 92% | 42,685 psi | 89% | 2674 fps | 97.4% |
| Norma 201 | <<locked>> | 88% | 41,930 psi | 88% | 2644 fps | 97.2% |
| Norma 202 | <<locked>> | 88% | 42,119 psi | 88% | 2667 fps | 99.2% |
| Norma 203B | <<locked>> | 92% | 42,714 psi | 89% | 2710 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 71% | 1765 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 42,119 psi | 88% | 2648 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,946 psi | 90% | 2795 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 84% | 40,973 psi | 86% | 2608 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 90% | 42,206 psi | 88% | 2641 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 96% | 41,829 psi | 87% | 2694 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 40,683 psi | 85% | 2664 fps | 98.5% |
| Shooters World Precision | <<locked>> | 92% | 42,685 psi | 89% | 2674 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,452 psi | 87% | 2569 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 40,799 psi | 85% | 2569 fps | 99.5% |
| Somchem S321 | <<locked>> | 84% | 43,163 psi | 90% | 2687 fps | 97.7% |
| Somchem S335 | <<locked>> | 88% | 43,308 psi | 90% | 2618 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 42,786 psi | 89% | 2697 fps | 96.6% |
| Vihtavuori N130 | <<locked>> | 82% | 41,930 psi | 88% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 41,278 psi | 86% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 40,669 psi | 85% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 42,177 psi | 88% | 2644 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 96% | 41,394 psi | 86% | 2641 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 86% | 42,743 psi | 89% | 2654 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 90% | 40,640 psi | 85% | 2631 fps | 98.8% |
| Winchester 748 | <<locked>> | 86% | 41,031 psi | 86% | 2687 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 40,495 psi | 85% | 2657 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% | 36,506 psi | 76% | 2507 fps | 99.7% |
| Accurate 2460 | <<locked>> | 80% | 39,320 psi | 82% | 2589 fps | 98.5% |
| Accurate 2495 | <<locked>> | 80% | 28,805 psi | 60% | 2388 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 34,650 psi | 72% | 2526 fps | 97% |
| Accurate 4064 | <<locked>> | 80% | 27,253 psi | 57% | 2359 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 86% | 40,335 psi | 84% | 2635 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,114 psi | 73% | 2497 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 33,388 psi | 70% | 2523 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,045 psi | 84% | 2684 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 37,347 psi | 78% | 2598 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 40,234 psi | 84% | 2717 fps | 95.2% |
| Bofors RP3 | <<locked>> | 90% | 36,506 psi | 76% | 2592 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,724 psi | 79% | 2513 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,025 psi | 69% | 2503 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 39,943 psi | 83% | 2625 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 84% | 38,203 psi | 80% | 2598 fps | 95.3% |
| Hodgdon LEVERevolution | 27.9 gr | 86% | 36,347 psi | 76% | 2602 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,164 psi | 53% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 39,276 psi | 82% | 2602 fps | 95.5% |
| IMR 3031 | 24 gr | 80% | 31,966 psi | 67% | 2503 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 35,114 psi | 73% | 2497 fps | 95% |
| Lovex D073.5 | <<locked>> | 80% | 38,812 psi | 81% | 2579 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 80% | 31,125 psi | 65% | 2454 fps | 95.7% |
| Lovex S062 | <<locked>> | 86% | 35,476 psi | 74% | 2523 fps | 95.3% |
| Norma 201 | <<locked>> | 82% | 34,838 psi | 73% | 2493 fps | 95% |
| Norma 202 | <<locked>> | 80% | 32,387 psi | 68% | 2457 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 39,726 psi | 83% | 2648 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,005 psi | 52% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,566 psi | 83% | 2595 fps | 97.8% |
| ReloadSwiss RS 60 | 28.7 gr | 88% | 33,127 psi | 69% | 2552 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 36,230 psi | 76% | 2510 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 35,070 psi | 73% | 2490 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 94% | 39,233 psi | 82% | 2641 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,125 psi | 65% | 2454 fps | 95.7% |
| Shooters World Precision | <<locked>> | 86% | 35,476 psi | 74% | 2523 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,592 psi | 72% | 2428 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,065 psi | 59% | 2287 fps | 96.4% |
| Somchem S321 | <<locked>> | 80% | 37,405 psi | 78% | 2569 fps | 96.2% |
| Somchem S335 | <<locked>> | 80% | 33,968 psi | 71% | 2431 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 37,782 psi | 79% | 2595 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 39,349 psi | 82% | 2523 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,505 psi | 72% | 2441 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 29,515 psi | 62% | 2398 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 30,806 psi | 64% | 2402 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 90% | 33,852 psi | 71% | 2484 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 35,012 psi | 73% | 2493 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 29,573 psi | 62% | 2379 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 33,721 psi | 70% | 2523 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 37,739 psi | 79% | 2598 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 49 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | SUS-TAC HPT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,795 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 49 of the 49 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 1:8.0 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, Hodgdon LEVERevolution, IMR 3031 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | SUS-TAC HPT 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.