Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 85gr | IBEX TRD bullet and 39 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 Shooters World Precision.
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% | 41,524 psi | 87% | 2657 fps | 99.9% |
| Accurate 2495 | <<locked>> | 88% | 41,510 psi | 87% | 2710 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,569 psi | 89% | 2743 fps | 98.4% |
| Accurate 4064 | <<locked>> | 90% | 41,176 psi | 86% | 2733 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,032 psi | 88% | 2700 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 86% | 43,207 psi | 90% | 2772 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,134 psi | 88% | 2753 fps | 96.3% |
| Bofors RP3 | <<locked>> | 92% | 42,047 psi | 88% | 2759 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 41,959 psi | 88% | 2654 fps | 97.2% |
| Hodgdon BL-C2 | <<locked>> | 86% | 42,714 psi | 89% | 2769 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 43,062 psi | 90% | 2753 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 40,756 psi | 85% | 2753 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 72% | 1785 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 41,046 psi | 86% | 2759 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 42,032 psi | 88% | 2700 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 86% | 40,988 psi | 86% | 2723 fps | 98.1% |
| Lovex S062 | <<locked>> | 90% | 42,772 psi | 89% | 2730 fps | 96.9% |
| Norma 201 | <<locked>> | 86% | 42,380 psi | 89% | 2703 fps | 96.8% |
| Norma 202 | <<locked>> | 86% | 41,742 psi | 87% | 2717 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,795 psi | 73% | 1827 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,409 psi | 89% | 2835 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 82% | 41,713 psi | 87% | 2671 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 88% | 42,583 psi | 89% | 2700 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 94% | 41,959 psi | 88% | 2749 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 86% | 40,988 psi | 86% | 2723 fps | 98.1% |
| Shooters World Precision | <<locked>> | 90% | 42,772 psi | 89% | 2730 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,466 psi | 87% | 2625 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 42,975 psi | 90% | 2667 fps | 99.5% |
| Somchem S321 | <<locked>> | 82% | 42,612 psi | 89% | 2733 fps | 97.1% |
| Somchem S335 | <<locked>> | 84% | 41,075 psi | 86% | 2631 fps | 99.1% |
| Somchem S355 | <<locked>> | 94% | 43,178 psi | 90% | 2756 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 84% | 41,147 psi | 86% | 2628 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 90% | 43,279 psi | 90% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 41,945 psi | 88% | 2697 fps | 99% |
| Vihtavuori N150 | <<locked>> | 94% | 41,176 psi | 86% | 2690 fps | 97% |
| Vihtavuori N530 | <<locked>> | 84% | 42,090 psi | 88% | 2697 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 88% | 40,567 psi | 85% | 2684 fps | 98.4% |
| Winchester 748 | <<locked>> | 86% | 43,221 psi | 90% | 2785 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 42,670 psi | 89% | 2753 fps | 96% |
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% | 39,247 psi | 82% | 2612 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 32,576 psi | 68% | 2520 fps | 99% |
| Accurate 2520 | <<locked>> | 80% | 37,188 psi | 78% | 2631 fps | 97.1% |
| Accurate 4064 | 24.8 gr | 80% | 30,763 psi | 64% | 2490 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,579 psi | 79% | 2602 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 35,679 psi | 75% | 2625 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 39,798 psi | 83% | 2703 fps | 95.6% |
| Bofors RP3 | <<locked>> | 90% | 39,349 psi | 82% | 2703 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,726 psi | 83% | 2608 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,317 psi | 74% | 2605 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 84% | 40,321 psi | 84% | 2694 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 38,595 psi | 81% | 2703 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,527 psi | 53% | 1591 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 34,330 psi | 72% | 2612 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 37,579 psi | 79% | 2602 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 33,794 psi | 71% | 2562 fps | 96% |
| Lovex S062 | <<locked>> | 86% | 37,898 psi | 79% | 2625 fps | 95.5% |
| Norma 201 | <<locked>> | 82% | 37,521 psi | 78% | 2598 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 34,780 psi | 73% | 2562 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,875 psi | 54% | 1634 fps | 100% |
| ReloadSwiss RS 60 | 29.3 gr | 88% | 35,302 psi | 74% | 2661 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 39,465 psi | 82% | 2621 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 38,101 psi | 80% | 2602 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 92% | 39,566 psi | 83% | 2700 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,794 psi | 71% | 2562 fps | 96% |
| Shooters World Precision | 26.5 gr | 86% | 37,898 psi | 79% | 2625 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,912 psi | 77% | 2526 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,226 psi | 63% | 2388 fps | 96.7% |
| Somchem S321 | <<locked>> | 80% | 39,972 psi | 84% | 2677 fps | 96.4% |
| Somchem S335 | <<locked>> | 80% | 36,448 psi | 76% | 2533 fps | 98.3% |
| Somchem S355 | <<locked>> | 92% | 40,422 psi | 84% | 2700 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 36,651 psi | 77% | 2536 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 32,111 psi | 67% | 2507 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,011 psi | 69% | 2500 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 90% | 36,303 psi | 76% | 2589 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 37,115 psi | 78% | 2589 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 31,836 psi | 67% | 2480 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 35,766 psi | 75% | 2621 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 39,929 psi | 83% | 2697 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 39 powders for 6 x 52 R BB2 loaded with the .243 | 85gr | IBEX TRD. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,785 fps to 2,835 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 39 of the 39 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 85.0 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, Accurate 4064, Shooters World Precision rank at the top here: for 6 x 52 R BB2 with the .243 | 85gr | IBEX TRD 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.