Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 79gr | Peregrine VLR-5 bullet and 43 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>> | 88% | 42,830 psi | 89% | 2818 fps | 99.9% |
| Accurate 2460 | <<locked>> | 84% | 40,944 psi | 86% | 2805 fps | 98% |
| Accurate 2495 | <<locked>> | 94% | 40,959 psi | 86% | 2844 fps | 99.9% |
| Accurate 2520 | <<locked>> | 88% | 41,568 psi | 87% | 2854 fps | 97.8% |
| Accurate 4064 | <<locked>> | 96% | 40,741 psi | 85% | 2861 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 42,960 psi | 90% | 2871 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 41,858 psi | 87% | 2822 fps | 95.9% |
| Alliant AR-Comp | <<locked>> | 90% | 42,453 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 43,265 psi | 90% | 2844 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 41,727 psi | 87% | 2776 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 90% | 42,467 psi | 89% | 2890 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 84% | 42,061 psi | 88% | 2854 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 84% | 42,873 psi | 90% | 2867 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 43,279 psi | 90% | 2930 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,243 psi | 69% | 1857 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 43,134 psi | 90% | 2933 fps | 99.7% |
| IMR 4198 | <<locked>> | 82% | 41,800 psi | 87% | 2776 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 41,858 psi | 87% | 2822 fps | 95.9% |
| Lovex D073.5 | <<locked>> | 84% | 40,698 psi | 85% | 2799 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 92% | 42,409 psi | 89% | 2881 fps | 97.9% |
| Lovex S062 | <<locked>> | 94% | 41,307 psi | 86% | 2828 fps | 95.9% |
| Norma 201 | <<locked>> | 90% | 40,814 psi | 85% | 2802 fps | 95.7% |
| Norma 202 | <<locked>> | 90% | 41,060 psi | 86% | 2831 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,185 psi | 69% | 1896 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 41,858 psi | 87% | 2825 fps | 97.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 42,047 psi | 88% | 2943 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 88% | 42,032 psi | 88% | 2818 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 92% | 41,046 psi | 86% | 2799 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 42,409 psi | 89% | 2881 fps | 97.9% |
| Shooters World Precision | <<locked>> | 94% | 41,307 psi | 86% | 2828 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 41,162 psi | 86% | 2799 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 41,089 psi | 86% | 2743 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 42,598 psi | 89% | 2782 fps | 99.2% |
| Somchem S321 | <<locked>> | 86% | 42,235 psi | 88% | 2851 fps | 96.4% |
| Somchem S335 | <<locked>> | 90% | 42,366 psi | 89% | 2785 fps | 99% |
| Vihtavuori N130 | <<locked>> | 84% | 40,901 psi | 85% | 2743 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 88% | 40,886 psi | 85% | 2753 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 94% | 42,061 psi | 88% | 2854 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 92% | 41,452 psi | 87% | 2812 fps | 98.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,207 psi | 90% | 2854 fps | 97% |
| Vihtavuori N530 | <<locked>> | 88% | 41,843 psi | 87% | 2815 fps | 96% |
| Vihtavuori N540 | <<locked>> | 94% | 42,525 psi | 89% | 2848 fps | 98.4% |
| Winchester 748 | <<locked>> | 90% | 43,149 psi | 90% | 2910 fps | 97.3% |
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% | 32,967 psi | 69% | 2608 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 35,447 psi | 74% | 2684 fps | 96.5% |
| Accurate 2495 | <<locked>> | 80% | 25,193 psi | 53% | 2457 fps | 96% |
| Accurate 2520 | <<locked>> | 82% | 33,330 psi | 70% | 2671 fps | 95.2% |
| Accurate 4064 | 27.4 gr | 86% | 29,341 psi | 61% | 2589 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 40,321 psi | 84% | 2818 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 39,421 psi | 82% | 2769 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 30,371 psi | 63% | 2628 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,739 psi | 79% | 2733 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 37,115 psi | 78% | 2674 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 86% | 36,796 psi | 77% | 2766 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 36,680 psi | 77% | 2736 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 37,173 psi | 78% | 2746 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 40,785 psi | 85% | 2877 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,439 psi | 51% | 1660 fps | 100% |
| IMR 3031 | 25.1 gr | 80% | 28,761 psi | 60% | 2589 fps | 96.2% |
| IMR 4198 | <<locked>> | 80% | 39,233 psi | 82% | 2723 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 39,421 psi | 82% | 2769 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 82% | 37,869 psi | 79% | 2736 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 86% | 34,330 psi | 72% | 2707 fps | 95.6% |
| Lovex S062 | <<locked>> | 92% | 38,899 psi | 81% | 2776 fps | 95.2% |
| Norma 201 | <<locked>> | 88% | 38,377 psi | 80% | 2749 fps | 95% |
| Norma 202 | <<locked>> | 82% | 31,357 psi | 66% | 2605 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,149 psi | 50% | 1693 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,318 psi | 76% | 2703 fps | 95.8% |
| ReloadSwiss RS 60 | 32.1 gr | 94% | 36,956 psi | 77% | 2815 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 32,706 psi | 68% | 2602 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 90% | 38,638 psi | 81% | 2746 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 86% | 34,330 psi | 72% | 2707 fps | 95.6% |
| Shooters World Precision | <<locked>> | 92% | 38,899 psi | 81% | 2776 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,580 psi | 81% | 2746 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,633 psi | 66% | 2526 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 28,906 psi | 60% | 2474 fps | 95.4% |
| Somchem S321 | <<locked>> | 84% | 39,378 psi | 82% | 2792 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 31,125 psi | 65% | 2533 fps | 96.1% |
| Vihtavuori N130 | <<locked>> | 80% | 36,158 psi | 76% | 2644 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 31,502 psi | 66% | 2543 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 80% | 26,368 psi | 55% | 2480 fps | 96.4% |
| Vihtavuori N140 | <<locked>> | 82% | 29,820 psi | 62% | 2543 fps | 95% |
| Vihtavuori N150 | <<locked>> | 96% | 37,710 psi | 79% | 2740 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 86% | 39,349 psi | 82% | 2762 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 86% | 32,721 psi | 68% | 2628 fps | 95.6% |
| Winchester 748 | <<locked>> | 86% | 37,826 psi | 79% | 2795 fps | 95.7% |
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 43 powders for 6 x 52 R BB2 loaded with the .243 | 79gr | Peregrine VLR-5. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,857 fps to 2,943 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 43 of the 43 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 79.0 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, Vihtavuori N150 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 | 79gr | Peregrine VLR-5 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.