Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 80gr | Rhino Penetrator bullet and 41 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Accurate 4064.
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% | 43,120 psi | 90% | 2808 fps | 99.9% |
| Accurate 2460 | <<locked>> | 82% | 41,365 psi | 86% | 2799 fps | 98.3% |
| Accurate 2495 | <<locked>> | 92% | 42,206 psi | 88% | 2848 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,829 psi | 87% | 2844 fps | 98.1% |
| Accurate 4064 | <<locked>> | 94% | 41,887 psi | 88% | 2867 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,843 psi | 87% | 2808 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 88% | 42,598 psi | 89% | 2881 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,626 psi | 87% | 2854 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 43,076 psi | 90% | 2825 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 40,959 psi | 86% | 2851 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,655 psi | 87% | 2762 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,511 psi | 89% | 2877 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 82% | 42,105 psi | 88% | 2838 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 82% | 42,830 psi | 89% | 2851 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 71% | 1860 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 43,250 psi | 90% | 2920 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 41,843 psi | 87% | 2808 fps | 96.3% |
| Lovex D073.5 | <<locked>> | 82% | 41,046 psi | 86% | 2792 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 90% | 43,033 psi | 90% | 2877 fps | 98.3% |
| Lovex S062 | <<locked>> | 92% | 41,901 psi | 88% | 2825 fps | 96.4% |
| Norma 201 | <<locked>> | 88% | 41,495 psi | 87% | 2802 fps | 96.3% |
| Norma 202 | <<locked>> | 88% | 41,191 psi | 86% | 2818 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,852 psi | 71% | 1903 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,466 psi | 87% | 2802 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,032 psi | 88% | 2936 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 86% | 42,612 psi | 89% | 2815 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 90% | 41,684 psi | 87% | 2799 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 43,033 psi | 90% | 2877 fps | 98.3% |
| Shooters World Precision | <<locked>> | 92% | 41,901 psi | 88% | 2825 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,104 psi | 86% | 2730 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,786 psi | 89% | 2772 fps | 99.4% |
| Somchem S321 | <<locked>> | 84% | 42,221 psi | 88% | 2838 fps | 96.7% |
| Somchem S335 | <<locked>> | 88% | 42,859 psi | 90% | 2782 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 82% | 41,017 psi | 86% | 2726 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 40,915 psi | 85% | 2736 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 92% | 42,743 psi | 89% | 2851 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,423 psi | 87% | 2799 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 96% | 40,495 psi | 85% | 2789 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 86% | 41,771 psi | 87% | 2805 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 92% | 42,859 psi | 90% | 2841 fps | 98.7% |
| Winchester 748 | <<locked>> | 86% | 40,582 psi | 85% | 2844 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% | 35,708 psi | 75% | 2657 fps | 99.2% |
| Accurate 2460 | <<locked>> | 80% | 38,595 psi | 81% | 2740 fps | 97.7% |
| Accurate 2495 | <<locked>> | 80% | 27,949 psi | 58% | 2520 fps | 97.5% |
| Accurate 2520 | <<locked>> | 80% | 33,895 psi | 71% | 2667 fps | 95.8% |
| Accurate 4064 | 27.4 gr | 84% | 30,168 psi | 63% | 2592 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 39,479 psi | 82% | 2759 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,895 psi | 69% | 2677 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 38,914 psi | 81% | 2795 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,582 psi | 85% | 2772 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 38,566 psi | 81% | 2799 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,854 psi | 77% | 2654 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 37,057 psi | 77% | 2759 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 39,218 psi | 82% | 2779 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 80% | 40,016 psi | 84% | 2795 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,845 psi | 52% | 1660 fps | 100% |
| IMR 3031 | 25.8 gr | 80% | 31,212 psi | 65% | 2644 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 84% | 39,479 psi | 82% | 2759 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 80% | 38,363 psi | 80% | 2733 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 32,489 psi | 68% | 2641 fps | 95.2% |
| Lovex S062 | <<locked>> | 90% | 39,160 psi | 82% | 2766 fps | 95.6% |
| Norma 201 | <<locked>> | 86% | 38,798 psi | 81% | 2743 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,879 psi | 67% | 2602 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,005 psi | 52% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,740 psi | 81% | 2746 fps | 96.9% |
| ReloadSwiss RS 60 | 32.2 gr | 92% | 36,825 psi | 77% | 2808 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 35,563 psi | 74% | 2657 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 88% | 38,986 psi | 81% | 2740 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 32,489 psi | 68% | 2641 fps | 95.2% |
| Shooters World Precision | <<locked>> | 90% | 39,160 psi | 82% | 2766 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,997 psi | 71% | 2572 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,586 psi | 58% | 2421 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 36,970 psi | 77% | 2723 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 33,199 psi | 69% | 2572 fps | 97.2% |
| Vihtavuori N130 | <<locked>> | 80% | 38,711 psi | 81% | 2680 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 33,910 psi | 71% | 2589 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 80% | 28,892 psi | 60% | 2539 fps | 97.7% |
| Vihtavuori N140 | <<locked>> | 80% | 29,979 psi | 63% | 2530 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 92% | 35,607 psi | 74% | 2680 fps | 95% |
| Vihtavuori N530 | <<locked>> | 84% | 39,407 psi | 82% | 2753 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 82% | 30,937 psi | 65% | 2566 fps | 95.2% |
| Winchester 748 | <<locked>> | 82% | 35,462 psi | 74% | 2726 fps | 95.3% |
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 41 powders for 6 x 52 R BB2 loaded with the .243 | 80gr | Rhino Penetrator. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,860 fps to 2,936 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 41 of the 41 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 80.0 gr projectile in 0.243" calls for a 1:10.5 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, IMR 3031, Accurate 4064 rank at the top here: for 6 x 52 R BB2 with the .243 | 80gr | Rhino Penetrator 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.