Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 88gr | CutEdge MTH bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 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>> | 86% | 42,801 psi | 89% | 2674 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 40,741 psi | 85% | 2661 fps | 98.7% |
| Accurate 2495 | <<locked>> | 92% | 41,582 psi | 87% | 2710 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,640 psi | 87% | 2717 fps | 98.6% |
| Accurate 4064 | <<locked>> | 94% | 41,553 psi | 87% | 2736 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,887 psi | 88% | 2687 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 88% | 42,714 psi | 89% | 2749 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,003 psi | 88% | 2772 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,771 psi | 87% | 2733 fps | 96.8% |
| Bofors RP3 | <<locked>> | 94% | 41,075 psi | 86% | 2733 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,872 psi | 87% | 2644 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,569 psi | 89% | 2753 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 82% | 42,003 psi | 88% | 2707 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 82% | 42,598 psi | 89% | 2720 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 88% | 42,641 psi | 89% | 2736 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,828 psi | 85% | 2746 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,344 psi | 70% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,379 psi | 86% | 2690 fps | 96.1% |
| IMR 3031 | <<locked>> | 88% | 40,770 psi | 85% | 2740 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 41,887 psi | 88% | 2687 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 82% | 40,567 psi | 85% | 2661 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 90% | 43,062 psi | 90% | 2753 fps | 98.9% |
| Lovex S062 | <<locked>> | 92% | 41,626 psi | 87% | 2697 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 40,872 psi | 85% | 2671 fps | 96.9% |
| Norma 202 | <<locked>> | 88% | 41,263 psi | 86% | 2694 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,417 psi | 70% | 1791 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,800 psi | 87% | 2684 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,134 psi | 88% | 2822 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 42,003 psi | 88% | 2677 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 90% | 41,582 psi | 87% | 2674 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 96% | 40,959 psi | 86% | 2720 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 43,062 psi | 90% | 2753 fps | 98.9% |
| Shooters World Precision | <<locked>> | 92% | 41,626 psi | 87% | 2697 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 40,756 psi | 85% | 2602 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,627 psi | 89% | 2644 fps | 99.7% |
| Somchem S321 | <<locked>> | 84% | 42,105 psi | 88% | 2713 fps | 97.5% |
| Somchem S335 | <<locked>> | 88% | 42,395 psi | 89% | 2648 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 42,018 psi | 88% | 2726 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 82% | 40,930 psi | 86% | 2598 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 43,308 psi | 90% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 42,424 psi | 89% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,698 psi | 87% | 2680 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 96% | 40,669 psi | 85% | 2671 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 86% | 41,916 psi | 88% | 2684 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 92% | 42,975 psi | 90% | 2717 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,714 psi | 89% | 2697 fps | 96.2% |
| Winchester 748 | <<locked>> | 86% | 40,495 psi | 85% | 2720 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,424 psi | 89% | 2740 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% | 35,346 psi | 74% | 2530 fps | 99.5% |
| Accurate 2460 | <<locked>> | 80% | 38,247 psi | 80% | 2612 fps | 98.2% |
| Accurate 2495 | <<locked>> | 80% | 27,267 psi | 57% | 2392 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 33,649 psi | 70% | 2546 fps | 96.6% |
| Accurate 4064 | 25.6 gr | 82% | 27,905 psi | 58% | 2421 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 36,709 psi | 77% | 2579 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,750 psi | 68% | 2552 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,392 psi | 82% | 2713 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,434 psi | 76% | 2621 fps | 95.1% |
| Bofors RP3 | 29 gr | 90% | 35,694 psi | 75% | 2618 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,767 psi | 77% | 2536 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,229 psi | 72% | 2575 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 39,378 psi | 82% | 2654 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 39,639 psi | 83% | 2664 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 86% | 39,726 psi | 83% | 2677 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 38,043 psi | 79% | 2684 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,743 psi | 52% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,522 psi | 80% | 2631 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 30,980 psi | 65% | 2523 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 82% | 36,709 psi | 77% | 2579 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 38,116 psi | 80% | 2612 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 80% | 30,182 psi | 63% | 2470 fps | 95.2% |
| Lovex S062 | <<locked>> | 88% | 36,796 psi | 77% | 2595 fps | 95.7% |
| Norma 201 | <<locked>> | 84% | 36,158 psi | 76% | 2566 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 31,720 psi | 66% | 2484 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,903 psi | 52% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,870 psi | 81% | 2625 fps | 97.7% |
| ReloadSwiss RS 60 | 30.1 gr | 90% | 34,476 psi | 72% | 2635 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 34,911 psi | 73% | 2526 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 36,347 psi | 76% | 2566 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 94% | 37,985 psi | 79% | 2657 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,182 psi | 63% | 2470 fps | 95.2% |
| Shooters World Precision | <<locked>> | 88% | 36,796 psi | 77% | 2595 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,692 psi | 70% | 2451 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,209 psi | 57% | 2306 fps | 95.9% |
| Somchem S321 | <<locked>> | 80% | 36,506 psi | 76% | 2595 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 32,909 psi | 69% | 2451 fps | 97.8% |
| Somchem S355 | <<locked>> | 94% | 39,508 psi | 83% | 2674 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 38,421 psi | 80% | 2552 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,663 psi | 70% | 2464 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 28,529 psi | 60% | 2418 fps | 98.3% |
| Vihtavuori N140 | <<locked>> | 80% | 29,791 psi | 62% | 2418 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 90% | 33,243 psi | 69% | 2513 fps | 95% |
| Vihtavuori N530 | <<locked>> | 82% | 36,535 psi | 76% | 2569 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 28,776 psi | 60% | 2398 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,885 psi | 83% | 2641 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 32,967 psi | 69% | 2549 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 39,929 psi | 83% | 2687 fps | 95.8% |
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 48 powders for 6 x 52 R BB2 loaded with the .243 | 88gr | CutEdge MTH. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,749 fps to 2,822 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.243" calls for a 1:8.5 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, Accurate 4064, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 88gr | CutEdge MTH 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.