Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Sierra Tipped GameKing 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, Hodgdon LEVERevolution and Lovex D073.6.
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% | 42,003 psi | 88% | 2618 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,786 psi | 89% | 2661 fps | 99.2% |
| Accurate 2495 | <<locked>> | 90% | 41,002 psi | 86% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 43,265 psi | 90% | 2707 fps | 99% |
| Accurate 4064 | <<locked>> | 92% | 40,959 psi | 86% | 2684 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 40,596 psi | 85% | 2625 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 86% | 41,785 psi | 87% | 2690 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 43,250 psi | 90% | 2723 fps | 97.3% |
| Bofors RP3 | <<locked>> | 94% | 42,772 psi | 89% | 2726 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,960 psi | 90% | 2628 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 86% | 41,075 psi | 86% | 2687 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 86% | 41,466 psi | 87% | 2674 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 42,148 psi | 88% | 2736 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,707 psi | 70% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 42,554 psi | 89% | 2677 fps | 96.6% |
| IMR 3031 | <<locked>> | 88% | 42,627 psi | 89% | 2736 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,264 psi | 88% | 2717 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 84% | 40,596 psi | 85% | 2625 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 82% | 42,583 psi | 89% | 2661 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 88% | 41,611 psi | 87% | 2687 fps | 98.7% |
| Lovex S060 | <<locked>> | 86% | 42,047 psi | 88% | 2605 fps | 95.9% |
| Lovex S062 | <<locked>> | 90% | 41,002 psi | 86% | 2648 fps | 97.2% |
| Norma 201 | <<locked>> | 88% | 42,830 psi | 89% | 2671 fps | 97.5% |
| Norma 202 | <<locked>> | 88% | 42,583 psi | 89% | 2684 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,250 psi | 88% | 2690 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,301 psi | 72% | 1778 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 43,004 psi | 90% | 2671 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 40,625 psi | 85% | 2753 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 41,510 psi | 87% | 2628 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 90% | 43,105 psi | 90% | 2664 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 96% | 42,656 psi | 89% | 2717 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 41,611 psi | 87% | 2687 fps | 98.7% |
| Shooters World Precision | <<locked>> | 90% | 41,002 psi | 86% | 2648 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,206 psi | 88% | 2677 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 42,351 psi | 88% | 2595 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,655 psi | 87% | 2592 fps | 99.7% |
| Somchem S321 | <<locked>> | 82% | 40,973 psi | 86% | 2651 fps | 97.3% |
| Somchem S335 | <<locked>> | 86% | 41,640 psi | 87% | 2598 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 41,452 psi | 87% | 2677 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 82% | 42,438 psi | 89% | 2589 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 42,221 psi | 88% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,655 psi | 87% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 43,047 psi | 90% | 2667 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 96% | 42,134 psi | 88% | 2664 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 84% | 40,582 psi | 85% | 2621 fps | 97% |
| Vihtavuori N540 | <<locked>> | 90% | 41,800 psi | 87% | 2657 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 41,872 psi | 87% | 2710 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 41,292 psi | 86% | 2680 fps | 96.4% |
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% | 37,072 psi | 77% | 2526 fps | 99.8% |
| Accurate 2460 | <<locked>> | 80% | 39,827 psi | 83% | 2605 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 29,341 psi | 61% | 2408 fps | 98.8% |
| Accurate 2520 | <<locked>> | 80% | 35,143 psi | 73% | 2543 fps | 97.2% |
| Accurate 4064 | <<locked>> | 80% | 27,804 psi | 58% | 2379 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,955 psi | 75% | 2523 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 33,939 psi | 71% | 2539 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,549 psi | 74% | 2566 fps | 95% |
| Bofors RP3 | <<locked>> | 90% | 37,304 psi | 78% | 2618 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,189 psi | 80% | 2530 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,460 psi | 70% | 2520 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 84% | 38,638 psi | 81% | 2615 fps | 95.6% |
| Hodgdon LEVERevolution | 28.4 gr | 86% | 37,057 psi | 77% | 2628 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,034 psi | 52% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 37,724 psi | 79% | 2579 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 32,532 psi | 68% | 2523 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 39,769 psi | 83% | 2667 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 35,955 psi | 75% | 2523 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 39,682 psi | 83% | 2605 fps | 97.6% |
| Lovex D073.6 | 26 gr | 80% | 31,604 psi | 66% | 2470 fps | 96% |
| Lovex S060 | <<locked>> | 84% | 39,653 psi | 83% | 2556 fps | 95.2% |
| Lovex S062 | <<locked>> | 86% | 35,955 psi | 75% | 2539 fps | 95.6% |
| Norma 201 | <<locked>> | 82% | 35,317 psi | 74% | 2510 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 33,286 psi | 70% | 2487 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,784 psi | 83% | 2638 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,280 psi | 53% | 1588 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,480 psi | 85% | 2621 fps | 98.2% |
| ReloadSwiss RS 60 | 29.2 gr | 88% | 33,707 psi | 70% | 2582 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 36,796 psi | 77% | 2530 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 35,926 psi | 75% | 2516 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 37,159 psi | 78% | 2605 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,604 psi | 66% | 2470 fps | 96% |
| Shooters World Precision | <<locked>> | 86% | 35,955 psi | 75% | 2539 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,769 psi | 83% | 2628 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,114 psi | 73% | 2448 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,500 psi | 60% | 2306 fps | 96.7% |
| Somchem S321 | <<locked>> | 80% | 38,203 psi | 80% | 2595 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 34,432 psi | 72% | 2451 fps | 98.3% |
| Somchem S355 | <<locked>> | 92% | 38,580 psi | 81% | 2618 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 39,900 psi | 83% | 2543 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,027 psi | 73% | 2457 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 30,110 psi | 63% | 2418 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 80% | 31,270 psi | 65% | 2418 fps | 97% |
| Vihtavuori N150 | <<locked>> | 88% | 32,503 psi | 68% | 2461 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 35,447 psi | 74% | 2510 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 29,979 psi | 63% | 2398 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 34,490 psi | 72% | 2549 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 86% | 38,479 psi | 80% | 2621 fps | 95.6% |
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 | 90gr | Sierra Tipped GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,753 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 90.0 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 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, Lovex D073.6 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Sierra Tipped GameKing 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.