Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | SUS-TAC HPPT bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 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% | 40,698 psi | 85% | 2585 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 41,582 psi | 87% | 2628 fps | 98.8% |
| Accurate 2495 | <<locked>> | 92% | 42,409 psi | 89% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,134 psi | 88% | 2677 fps | 98.7% |
| Accurate 4064 | <<locked>> | 94% | 42,351 psi | 88% | 2703 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 42,685 psi | 89% | 2680 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,395 psi | 89% | 2648 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 88% | 43,221 psi | 90% | 2707 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,395 psi | 89% | 2730 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,134 psi | 88% | 2694 fps | 96.8% |
| Bofors RP3 | <<locked>> | 94% | 41,278 psi | 86% | 2687 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,279 psi | 88% | 2602 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 43,062 psi | 90% | 2717 fps | 98% |
| Hodgdon H322 | <<locked>> | 82% | 42,293 psi | 88% | 2664 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 82% | 43,192 psi | 90% | 2684 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 88% | 42,902 psi | 90% | 2690 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,828 psi | 85% | 2697 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,895 psi | 71% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,524 psi | 87% | 2644 fps | 96.1% |
| IMR 3031 | <<locked>> | 88% | 41,263 psi | 86% | 2703 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 42,395 psi | 89% | 2648 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 82% | 41,452 psi | 87% | 2628 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 90% | 43,105 psi | 90% | 2707 fps | 98.8% |
| Lovex S062 | <<locked>> | 92% | 42,032 psi | 88% | 2657 fps | 97.2% |
| Norma 201 | <<locked>> | 88% | 41,698 psi | 87% | 2635 fps | 97.1% |
| Norma 202 | <<locked>> | 88% | 41,423 psi | 87% | 2651 fps | 99% |
| Norma 203B | <<locked>> | 92% | 42,032 psi | 88% | 2690 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,040 psi | 71% | 1762 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,814 psi | 87% | 2638 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,409 psi | 89% | 2779 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 42,786 psi | 89% | 2641 fps | 99% |
| Rottweil R 902 | <<locked>> | 90% | 41,916 psi | 88% | 2631 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 96% | 41,176 psi | 86% | 2677 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 43,105 psi | 90% | 2707 fps | 98.8% |
| Shooters World Precision | <<locked>> | 92% | 42,032 psi | 88% | 2657 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,176 psi | 86% | 2562 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 43,250 psi | 90% | 2608 fps | 99.7% |
| Somchem S321 | <<locked>> | 84% | 42,467 psi | 89% | 2671 fps | 97.5% |
| Somchem S335 | <<locked>> | 88% | 43,047 psi | 90% | 2612 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 42,569 psi | 89% | 2690 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 41,611 psi | 87% | 2562 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 41,002 psi | 86% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 43,091 psi | 90% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,959 psi | 88% | 2638 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 96% | 40,756 psi | 85% | 2628 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 86% | 42,525 psi | 89% | 2648 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 92% | 42,989 psi | 90% | 2671 fps | 99.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,859 psi | 90% | 2654 fps | 96.1% |
| Winchester 748 | <<locked>> | 86% | 40,799 psi | 85% | 2677 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,888 psi | 90% | 2697 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% | 36,187 psi | 76% | 2497 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 39,030 psi | 82% | 2579 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 28,500 psi | 60% | 2379 fps | 98.4% |
| Accurate 2520 | <<locked>> | 80% | 34,374 psi | 72% | 2516 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 26,977 psi | 56% | 2349 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 86% | 40,103 psi | 84% | 2625 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 37,130 psi | 78% | 2539 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 33,040 psi | 69% | 2513 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,726 psi | 83% | 2674 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,724 psi | 77% | 2582 fps | 95.2% |
| Bofors RP3 | 28 gr | 90% | 36,260 psi | 76% | 2582 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,072 psi | 77% | 2497 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,911 psi | 73% | 2546 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 39,624 psi | 83% | 2612 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 40,161 psi | 84% | 2625 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 84% | 37,927 psi | 79% | 2589 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 38,450 psi | 80% | 2644 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,005 psi | 52% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 39,015 psi | 82% | 2592 fps | 95.3% |
| IMR 3031 | 23.8 gr | 80% | 31,676 psi | 66% | 2493 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 82% | 37,130 psi | 78% | 2539 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 80% | 38,551 psi | 81% | 2572 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 30,864 psi | 64% | 2444 fps | 95.5% |
| Lovex S062 | <<locked>> | 86% | 35,201 psi | 74% | 2513 fps | 95.2% |
| Norma 201 | <<locked>> | 84% | 36,811 psi | 77% | 2533 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 32,126 psi | 67% | 2448 fps | 96.7% |
| Norma 203B | <<locked>> | 90% | 39,465 psi | 82% | 2638 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,237 psi | 53% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,247 psi | 82% | 2585 fps | 97.7% |
| ReloadSwiss RS 60 | 29.1 gr | 90% | 34,998 psi | 73% | 2602 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 35,911 psi | 75% | 2497 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 86% | 37,072 psi | 77% | 2533 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 94% | 38,580 psi | 81% | 2625 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,864 psi | 64% | 2444 fps | 95.5% |
| Shooters World Precision | <<locked>> | 86% | 35,201 psi | 74% | 2513 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,301 psi | 72% | 2418 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,818 psi | 58% | 2280 fps | 96.2% |
| Somchem S321 | <<locked>> | 80% | 37,159 psi | 78% | 2562 fps | 96% |
| Somchem S335 | <<locked>> | 80% | 33,707 psi | 70% | 2421 fps | 98% |
| Somchem S355 | <<locked>> | 94% | 39,972 psi | 84% | 2638 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 39,044 psi | 82% | 2516 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,214 psi | 71% | 2431 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 29,254 psi | 61% | 2388 fps | 98.5% |
| Vihtavuori N140 | <<locked>> | 80% | 30,530 psi | 64% | 2392 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 33,634 psi | 70% | 2477 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 37,043 psi | 77% | 2533 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 29,312 psi | 61% | 2369 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 40,408 psi | 84% | 2605 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 33,460 psi | 70% | 2513 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 37,507 psi | 78% | 2589 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 50 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | SUS-TAC HPPT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,779 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 50 of the 50 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, Winchester 6.5 StaBALL 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, IMR 3031, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | SUS-TAC HPPT 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.