Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 82gr | Peregrine VLR-4 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% | 42,786 psi | 89% | 2762 fps | 99.9% |
| Accurate 2460 | <<locked>> | 84% | 40,988 psi | 86% | 2753 fps | 98.2% |
| Accurate 2495 | <<locked>> | 94% | 41,118 psi | 86% | 2792 fps | 99.9% |
| Accurate 2520 | <<locked>> | 88% | 41,771 psi | 87% | 2805 fps | 98% |
| Accurate 4064 | <<locked>> | 96% | 40,988 psi | 86% | 2815 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 42,322 psi | 88% | 2779 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 90% | 42,960 psi | 90% | 2848 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 41,423 psi | 87% | 2812 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 40,785 psi | 85% | 2740 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 42,061 psi | 88% | 2726 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 42,757 psi | 89% | 2841 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 84% | 42,424 psi | 89% | 2802 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 84% | 42,946 psi | 90% | 2815 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,083 psi | 69% | 1808 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 40,495 psi | 85% | 2825 fps | 99.6% |
| IMR 4198 | <<locked>> | 82% | 42,250 psi | 88% | 2726 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 42,322 psi | 88% | 2779 fps | 96.3% |
| Lovex D073.5 | <<locked>> | 84% | 40,843 psi | 85% | 2749 fps | 97% |
| Lovex D073.6 | <<locked>> | 92% | 42,670 psi | 89% | 2831 fps | 98.2% |
| Lovex S062 | <<locked>> | 94% | 41,930 psi | 88% | 2785 fps | 96.4% |
| Norma 201 | <<locked>> | 90% | 41,249 psi | 86% | 2759 fps | 96.1% |
| Norma 202 | <<locked>> | 90% | 41,133 psi | 86% | 2779 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,054 psi | 69% | 1850 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 41,800 psi | 87% | 2769 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 42,482 psi | 89% | 2900 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 88% | 42,409 psi | 89% | 2769 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 92% | 41,539 psi | 87% | 2756 fps | 96.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,294 psi | 90% | 2848 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 42,670 psi | 89% | 2831 fps | 98.2% |
| Shooters World Precision | <<locked>> | 94% | 41,930 psi | 88% | 2785 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 41,307 psi | 86% | 2746 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 40,959 psi | 86% | 2687 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 42,699 psi | 89% | 2730 fps | 99.3% |
| Somchem S321 | <<locked>> | 86% | 42,395 psi | 89% | 2802 fps | 96.7% |
| Somchem S335 | <<locked>> | 90% | 42,844 psi | 90% | 2743 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 41,075 psi | 86% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 40,756 psi | 85% | 2694 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 94% | 42,177 psi | 88% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 41,539 psi | 87% | 2762 fps | 98.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,149 psi | 90% | 2799 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 88% | 42,351 psi | 88% | 2772 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 94% | 42,801 psi | 89% | 2799 fps | 98.6% |
| Winchester 748 | <<locked>> | 88% | 40,741 psi | 85% | 2805 fps | 96.9% |
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% | 33,098 psi | 69% | 2559 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 35,752 psi | 75% | 2641 fps | 96.8% |
| Accurate 2495 | <<locked>> | 80% | 25,338 psi | 53% | 2415 fps | 96.4% |
| Accurate 2520 | <<locked>> | 82% | 33,678 psi | 70% | 2628 fps | 95.7% |
| Accurate 4064 | 26.7 gr | 86% | 29,327 psi | 61% | 2539 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 39,392 psi | 82% | 2717 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 30,487 psi | 64% | 2582 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 38,899 psi | 81% | 2756 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,232 psi | 80% | 2687 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 37,275 psi | 78% | 2625 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 36,912 psi | 77% | 2717 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 36,883 psi | 77% | 2687 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 80% | 37,521 psi | 78% | 2703 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,497 psi | 51% | 1621 fps | 100% |
| IMR 3031 | 24.6 gr | 80% | 29,211 psi | 61% | 2552 fps | 96.7% |
| IMR 4198 | <<locked>> | 80% | 39,639 psi | 83% | 2677 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 39,392 psi | 82% | 2717 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 80% | 35,636 psi | 74% | 2635 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 84% | 32,169 psi | 67% | 2602 fps | 95.1% |
| Lovex S062 | <<locked>> | 92% | 38,986 psi | 81% | 2723 fps | 95.5% |
| Norma 201 | <<locked>> | 88% | 38,769 psi | 81% | 2703 fps | 95.4% |
| Norma 202 | <<locked>> | 82% | 31,575 psi | 66% | 2559 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,236 psi | 51% | 1654 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,579 psi | 76% | 2657 fps | 96.2% |
| ReloadSwiss RS 60 | 31.3 gr | 94% | 36,927 psi | 77% | 2769 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 33,127 psi | 69% | 2562 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 90% | 39,001 psi | 81% | 2703 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 98% | 40,582 psi | 85% | 2795 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 32,169 psi | 67% | 2602 fps | 95.1% |
| Shooters World Precision | <<locked>> | 92% | 38,986 psi | 81% | 2723 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,696 psi | 81% | 2694 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,705 psi | 66% | 2480 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 29,051 psi | 61% | 2431 fps | 95.8% |
| Somchem S321 | <<locked>> | 82% | 36,753 psi | 77% | 2680 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 31,227 psi | 65% | 2487 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 80% | 36,230 psi | 76% | 2592 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 31,589 psi | 66% | 2497 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 80% | 26,455 psi | 55% | 2438 fps | 96.7% |
| Vihtavuori N140 | <<locked>> | 82% | 30,037 psi | 63% | 2497 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 96% | 37,956 psi | 79% | 2697 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 86% | 39,334 psi | 82% | 2710 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 84% | 30,806 psi | 64% | 2530 fps | 95.1% |
| Winchester 748 | <<locked>> | 84% | 35,288 psi | 74% | 2680 fps | 95.1% |
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 | 82gr | Peregrine VLR-4. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,808 fps to 2,900 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 82.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Rottweil R 903 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 | 82gr | Peregrine VLR-4 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.