Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 90gr | Speer FMJ bullet and 53 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 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>> | 82% | 41,669 psi | 87% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 41,408 psi | 87% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 40,466 psi | 85% | 2674 fps | 98.8% |
| Accurate 4064 | <<locked>> | 90% | 41,263 psi | 86% | 2707 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 40,959 psi | 86% | 2677 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 43,207 psi | 90% | 2697 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 84% | 41,959 psi | 88% | 2707 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 43,192 psi | 90% | 2743 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 43,207 psi | 90% | 2818 fps | 97.1% |
| Bofors RP3 | <<locked>> | 92% | 43,062 psi | 90% | 2753 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 42,685 psi | 89% | 2648 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 84% | 41,104 psi | 86% | 2707 fps | 98% |
| Hodgdon H4895 | <<locked>> | 84% | 41,205 psi | 86% | 2690 fps | 96.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,189 psi | 82% | 2667 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,974 psi | 88% | 2756 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 72% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 42,119 psi | 88% | 2690 fps | 96.9% |
| IMR 3031 | <<locked>> | 86% | 42,656 psi | 89% | 2753 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 42,322 psi | 88% | 2740 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 84% | 43,207 psi | 90% | 2697 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 86% | 41,727 psi | 87% | 2710 fps | 99% |
| Lovex S060 | <<locked>> | 84% | 41,684 psi | 87% | 2621 fps | 96.3% |
| Lovex S062 | <<locked>> | 88% | 40,727 psi | 85% | 2664 fps | 97.5% |
| Norma 201 | <<locked>> | 86% | 42,525 psi | 89% | 2684 fps | 97.8% |
| Norma 202 | <<locked>> | 86% | 42,786 psi | 89% | 2703 fps | 99.5% |
| Norma 203B | <<locked>> | 88% | 40,625 psi | 85% | 2694 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 90% | 43,047 psi | 90% | 2759 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 42,134 psi | 88% | 2710 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 72% | 1804 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 43,178 psi | 90% | 2808 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 43,236 psi | 90% | 2838 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 41,205 psi | 86% | 2641 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 88% | 42,772 psi | 89% | 2680 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 94% | 42,946 psi | 90% | 2740 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 41,727 psi | 87% | 2710 fps | 99% |
| Shooters World Precision | <<locked>> | 88% | 40,727 psi | 85% | 2664 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 41,713 psi | 87% | 2740 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,105 psi | 88% | 2697 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,742 psi | 87% | 2605 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 41,220 psi | 86% | 2602 fps | 99.8% |
| Somchem S335 | <<locked>> | 84% | 41,408 psi | 87% | 2612 fps | 99.7% |
| Somchem S341 | <<locked>> | 84% | 40,582 psi | 85% | 2654 fps | 95.8% |
| Somchem S355 | <<locked>> | 92% | 41,408 psi | 87% | 2697 fps | 96.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,029 psi | 79% | 2713 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 84% | 41,698 psi | 87% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 41,611 psi | 87% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 43,076 psi | 90% | 2687 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 94% | 42,337 psi | 88% | 2687 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 43,192 psi | 90% | 2694 fps | 98% |
| Vihtavuori N540 | <<locked>> | 88% | 41,321 psi | 86% | 2671 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 40,944 psi | 86% | 2657 fps | 96.4% |
| Winchester 748 | <<locked>> | 84% | 41,901 psi | 88% | 2730 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 41,133 psi | 86% | 2697 fps | 96.8% |
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% | 39,276 psi | 82% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,459 psi | 66% | 2470 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 37,782 psi | 79% | 2618 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 29,776 psi | 62% | 2444 fps | 97% |
| ADI AR 2206H | <<locked>> | 82% | 38,334 psi | 80% | 2621 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,782 psi | 79% | 2585 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 80% | 36,564 psi | 76% | 2608 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,868 psi | 75% | 2589 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 37,913 psi | 79% | 2700 fps | 95.2% |
| Bofors RP3 | 29 gr | 86% | 34,940 psi | 73% | 2579 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,001 psi | 84% | 2592 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,911 psi | 75% | 2595 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 80% | 36,056 psi | 75% | 2575 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,970 psi | 77% | 2618 fps | 95% |
| Hodgdon LEVERevolution | 29.3 gr | 84% | 36,753 psi | 77% | 2641 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,338 psi | 53% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,173 psi | 78% | 2585 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 34,650 psi | 72% | 2589 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 37,318 psi | 78% | 2631 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 37,782 psi | 79% | 2585 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 80% | 33,852 psi | 71% | 2539 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 39,436 psi | 82% | 2575 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 33,910 psi | 71% | 2510 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 35,085 psi | 73% | 2523 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 35,215 psi | 74% | 2549 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 37,942 psi | 79% | 2635 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 88% | 40,321 psi | 84% | 2703 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,421 psi | 82% | 2651 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,585 psi | 53% | 1614 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 40,306 psi | 84% | 2749 fps | 95.2% |
| ReloadSwiss RS 60 | 30.1 gr | 86% | 33,257 psi | 69% | 2595 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 38,928 psi | 81% | 2592 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,634 psi | 70% | 2480 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 35,201 psi | 74% | 2579 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,852 psi | 71% | 2539 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 33,910 psi | 71% | 2510 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 39,436 psi | 82% | 2687 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 39,421 psi | 82% | 2641 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,072 psi | 77% | 2510 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,255 psi | 63% | 2369 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 36,289 psi | 76% | 2510 fps | 99% |
| Somchem S341 | <<locked>> | 82% | 37,956 psi | 79% | 2598 fps | 95% |
| Somchem S355 | <<locked>> | 88% | 36,477 psi | 76% | 2592 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 33,591 psi | 70% | 2602 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 37,072 psi | 77% | 2520 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,198 psi | 67% | 2484 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 33,069 psi | 69% | 2477 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 32,387 psi | 68% | 2474 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 37,652 psi | 79% | 2579 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 80% | 31,923 psi | 67% | 2461 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 38,392 psi | 80% | 2602 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 36,550 psi | 76% | 2618 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,984 psi | 75% | 2585 fps | 95.2% |
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 53 powders for 6 x 52 R BB2 loaded with the .243 | 90gr | Speer FMJ. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,838 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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, Bofors RP3 rank at the top here: for 6 x 52 R BB2 with the .243 | 90gr | Speer FMJ 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.