Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 95gr | ShellHouse Castings SP Hard Cast bullet and 62 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 Norma 203B.
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>> | 86% | 42,714 psi | 89% | 2572 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 40,698 psi | 85% | 2566 fps | 99.2% |
| Accurate 2495 | <<locked>> | 92% | 41,075 psi | 86% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 43,076 psi | 90% | 2657 fps | 99.3% |
| Accurate 4064 | <<locked>> | 94% | 41,234 psi | 86% | 2635 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 42,279 psi | 88% | 2634 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,148 psi | 88% | 2595 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 88% | 43,149 psi | 90% | 2656 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,134 psi | 88% | 2674 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,916 psi | 88% | 2648 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 43,149 psi | 90% | 2597 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 42,511 psi | 89% | 2659 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 42,453 psi | 89% | 2727 fps | 97% |
| Bofors RP3 | <<locked>> | 94% | 41,162 psi | 86% | 2648 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,930 psi | 88% | 2559 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,728 psi | 89% | 2657 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 84% | 41,669 psi | 87% | 2610 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 88% | 42,554 psi | 89% | 2646 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 41,017 psi | 86% | 2654 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 71% | 1678 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 43,120 psi | 90% | 2628 fps | 97.2% |
| IMR 3031 | <<locked>> | 92% | 42,554 psi | 89% | 2679 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 41,916 psi | 88% | 2589 fps | 95.9% |
| IMR 4895 | <<locked>> | 90% | 40,799 psi | 85% | 2639 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 86% | 42,148 psi | 88% | 2605 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 82% | 40,640 psi | 85% | 2577 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 90% | 43,076 psi | 90% | 2665 fps | 99.3% |
| Lovex S060 | <<locked>> | 86% | 41,075 psi | 86% | 2538 fps | 96.3% |
| Lovex S062 | <<locked>> | 92% | 41,945 psi | 88% | 2618 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 40,901 psi | 85% | 2586 fps | 97.7% |
| Norma 202 | <<locked>> | 88% | 41,466 psi | 87% | 2611 fps | 99.5% |
| Norma 203B | <<locked>> | 92% | 41,713 psi | 87% | 2647 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 92% | 42,076 psi | 88% | 2666 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 41,017 psi | 86% | 2615 fps | 96.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 43,091 psi | 90% | 2599 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,316 psi | 72% | 1717 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,510 psi | 87% | 2591 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 41,568 psi | 87% | 2706 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,148 psi | 88% | 2740 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 42,032 psi | 88% | 2592 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 90% | 41,176 psi | 86% | 2582 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 96% | 40,582 psi | 85% | 2629 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 43,076 psi | 90% | 2665 fps | 99.3% |
| Shooters World Precision | <<locked>> | 92% | 41,945 psi | 88% | 2618 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 43,279 psi | 90% | 2696 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 40,915 psi | 85% | 2604 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 40,712 psi | 85% | 2514 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 43,076 psi | 90% | 2564 fps | 99.9% |
| Somchem S321 | <<locked>> | 84% | 42,047 psi | 88% | 2625 fps | 98.1% |
| Somchem S335 | <<locked>> | 88% | 42,496 psi | 89% | 2563 fps | 99.8% |
| Somchem S341 | <<locked>> | 88% | 42,540 psi | 89% | 2622 fps | 96.6% |
| Somchem S355 | <<locked>> | 96% | 42,119 psi | 88% | 2643 fps | 97.2% |
| Vihtavuori N130 | <<locked>> | 84% | 42,902 psi | 90% | 2543 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 43,207 psi | 90% | 2564 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 42,801 psi | 89% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,176 psi | 86% | 2584 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,988 psi | 86% | 2590 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 84% | 41,408 psi | 87% | 2603 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 92% | 43,308 psi | 90% | 2647 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 40,277 psi | 84% | 2566 fps | 96.3% |
| Winchester 748 | <<locked>> | 84% | 41,002 psi | 86% | 2641 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,901 psi | 85% | 2623 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% | 35,288 psi | 74% | 2434 fps | 99.8% |
| Accurate 2460 | <<locked>> | 80% | 38,101 psi | 80% | 2516 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 26,774 psi | 56% | 2297 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 32,082 psi | 67% | 2434 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 25,440 psi | 53% | 2270 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 84% | 37,173 psi | 78% | 2529 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,360 psi | 72% | 2434 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,532 psi | 68% | 2461 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,378 psi | 82% | 2618 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,330 psi | 72% | 2493 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,364 psi | 84% | 2548 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,871 psi | 83% | 2607 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 36,869 psi | 77% | 2606 fps | 95% |
| Bofors RP3 | <<locked>> | 88% | 33,127 psi | 69% | 2480 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,970 psi | 77% | 2460 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,763 psi | 66% | 2428 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 36,390 psi | 76% | 2507 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 84% | 37,405 psi | 78% | 2542 fps | 95.9% |
| Hodgdon LEVERevolution | 27.8 gr | 88% | 35,723 psi | 75% | 2539 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,439 psi | 51% | 1497 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 35,520 psi | 74% | 2474 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 28,297 psi | 59% | 2371 fps | 98% |
| IMR 4064 | <<locked>> | 92% | 39,682 psi | 83% | 2546 fps | 95.2% |
| IMR 4895 | <<locked>> | 88% | 38,218 psi | 80% | 2586 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 34,360 psi | 72% | 2443 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 80% | 37,623 psi | 79% | 2519 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 29,936 psi | 63% | 2389 fps | 96.1% |
| Lovex S060 | <<locked>> | 84% | 38,566 psi | 81% | 2488 fps | 95.5% |
| Lovex S062 | <<locked>> | 84% | 32,271 psi | 67% | 2412 fps | 95% |
| Norma 201 | <<locked>> | 82% | 33,576 psi | 70% | 2430 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 31,415 psi | 66% | 2399 fps | 97.3% |
| Norma 203B | 27.2 gr | 88% | 36,579 psi | 76% | 2542 fps | 95% |
| Ramshot Big Game | <<locked>> | 90% | 39,102 psi | 82% | 2606 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,072 psi | 80% | 2556 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,681 psi | 79% | 2492 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,569 psi | 51% | 1536 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,899 psi | 81% | 2541 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 38,899 psi | 81% | 2650 fps | 95% |
| ReloadSwiss RS 60 | 28.5 gr | 88% | 32,039 psi | 67% | 2497 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 34,563 psi | 72% | 2439 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 33,823 psi | 71% | 2428 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 35,418 psi | 74% | 2523 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,936 psi | 63% | 2389 fps | 96.1% |
| Shooters World Precision | <<locked>> | 84% | 32,271 psi | 67% | 2412 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,130 psi | 80% | 2592 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 38,014 psi | 79% | 2545 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,663 psi | 70% | 2371 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,137 psi | 57% | 2231 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 36,564 psi | 76% | 2515 fps | 96.8% |
| Somchem S335 | <<locked>> | 80% | 32,866 psi | 69% | 2372 fps | 98.4% |
| Somchem S341 | <<locked>> | 86% | 39,465 psi | 82% | 2563 fps | 95.7% |
| Somchem S355 | <<locked>> | 92% | 36,912 psi | 77% | 2539 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 37,608 psi | 79% | 2450 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 31,270 psi | 65% | 2331 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 28,456 psi | 59% | 2329 fps | 98.8% |
| Vihtavuori N140 | <<locked>> | 80% | 29,196 psi | 61% | 2327 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 92% | 31,009 psi | 65% | 2386 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 36,216 psi | 76% | 2497 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 28,979 psi | 61% | 2341 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 37,217 psi | 78% | 2508 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 35,563 psi | 74% | 2530 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,913 psi | 79% | 2564 fps | 96.1% |
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 62 powders for 6 x 52 R BB2 loaded with the .243 | 95gr | ShellHouse Castings SP Hard Cast. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,678 fps to 2,740 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 62 of the 62 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 95.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N150 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, Norma 203B rank at the top here: for 6 x 52 R BB2 with the .243 | 95gr | ShellHouse Castings SP Hard Cast 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.