Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 80gr | Hasler Hunting bullet and 44 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 Winchester 748.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 41,843 psi | 87% | 2772 fps | 99.8% |
| Accurate 2460 | <<locked>> | 84% | 42,670 psi | 89% | 2812 fps | 98.4% |
| Accurate 2495 | <<locked>> | 94% | 43,163 psi | 90% | 2858 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 40,277 psi | 84% | 2802 fps | 97.5% |
| Accurate 4064 | <<locked>> | 96% | 42,830 psi | 89% | 2877 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 88% | 43,207 psi | 90% | 2825 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 88% | 41,263 psi | 86% | 2848 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 42,728 psi | 89% | 2864 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 82% | 42,090 psi | 88% | 2795 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 42,540 psi | 89% | 2874 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 86% | 43,018 psi | 90% | 2779 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,075 psi | 86% | 2838 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 82% | 40,437 psi | 84% | 2795 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 82% | 41,336 psi | 86% | 2812 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,359 psi | 70% | 1841 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 42,003 psi | 88% | 2887 fps | 99.7% |
| IMR 4198 | <<locked>> | 82% | 42,917 psi | 90% | 2769 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 43,207 psi | 90% | 2825 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 84% | 42,453 psi | 89% | 2808 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 90% | 41,539 psi | 87% | 2838 fps | 97.8% |
| Lovex S062 | <<locked>> | 94% | 42,931 psi | 90% | 2835 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 42,409 psi | 89% | 2808 fps | 96.3% |
| Norma 202 | <<locked>> | 90% | 42,554 psi | 89% | 2838 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,388 psi | 70% | 1880 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 43,236 psi | 90% | 2828 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 40,640 psi | 85% | 2887 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 86% | 41,379 psi | 86% | 2779 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 92% | 42,699 psi | 89% | 2808 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 41,539 psi | 87% | 2838 fps | 97.8% |
| Shooters World Precision | <<locked>> | 94% | 42,931 psi | 90% | 2835 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 42,873 psi | 90% | 2779 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 42,424 psi | 89% | 2799 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 42,424 psi | 89% | 2746 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 41,321 psi | 86% | 2736 fps | 99% |
| Somchem S321 | <<locked>> | 84% | 40,828 psi | 85% | 2799 fps | 96.1% |
| Somchem S335 | <<locked>> | 88% | 41,394 psi | 86% | 2743 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 84% | 42,235 psi | 88% | 2740 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,148 psi | 88% | 2753 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 92% | 41,075 psi | 86% | 2812 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 92% | 42,902 psi | 90% | 2818 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 98% | 41,727 psi | 87% | 2802 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 88% | 43,279 psi | 90% | 2822 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 92% | 41,524 psi | 87% | 2802 fps | 98.2% |
| Winchester 748 | <<locked>> | 88% | 42,047 psi | 88% | 2864 fps | 97.1% |
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% | 34,490 psi | 72% | 2618 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 37,072 psi | 77% | 2694 fps | 97% |
| Accurate 2495 | <<locked>> | 80% | 27,064 psi | 57% | 2487 fps | 97% |
| Accurate 2520 | <<locked>> | 80% | 32,474 psi | 68% | 2621 fps | 95% |
| Accurate 4064 | <<locked>> | 86% | 31,183 psi | 65% | 2615 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 40,741 psi | 85% | 2776 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 31,676 psi | 66% | 2638 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 40,248 psi | 84% | 2815 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,566 psi | 83% | 2746 fps | 99.9% |
| Bofors RP3 | <<locked>> | 94% | 39,552 psi | 83% | 2812 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 38,334 psi | 80% | 2677 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 86% | 38,319 psi | 80% | 2779 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 37,971 psi | 79% | 2743 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 80% | 38,522 psi | 80% | 2753 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,569 psi | 51% | 1644 fps | 100% |
| IMR 3031 | 25.1 gr | 80% | 30,371 psi | 63% | 2612 fps | 97% |
| IMR 4198 | <<locked>> | 80% | 40,364 psi | 84% | 2723 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 40,741 psi | 85% | 2776 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 80% | 36,898 psi | 77% | 2690 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 84% | 33,750 psi | 71% | 2664 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 38,087 psi | 80% | 2733 fps | 95% |
| Norma 201 | <<locked>> | 88% | 40,001 psi | 84% | 2759 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 30,792 psi | 64% | 2562 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,729 psi | 52% | 1686 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,623 psi | 79% | 2710 fps | 96.3% |
| ReloadSwiss RS 60 | 32 gr | 94% | 38,334 psi | 80% | 2831 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 34,360 psi | 72% | 2615 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 90% | 40,219 psi | 84% | 2756 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 33,750 psi | 71% | 2664 fps | 95.5% |
| Shooters World Precision | <<locked>> | 90% | 38,087 psi | 80% | 2733 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,972 psi | 84% | 2720 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,856 psi | 83% | 2749 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,880 psi | 69% | 2533 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 28,297 psi | 59% | 2431 fps | 95.2% |
| Somchem S321 | <<locked>> | 82% | 38,116 psi | 80% | 2740 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 32,474 psi | 68% | 2543 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 80% | 37,420 psi | 78% | 2644 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 32,721 psi | 68% | 2549 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 27,746 psi | 58% | 2497 fps | 97.1% |
| Vihtavuori N140 | <<locked>> | 82% | 31,111 psi | 65% | 2552 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 94% | 36,521 psi | 76% | 2690 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 86% | 40,712 psi | 85% | 2769 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 84% | 31,807 psi | 66% | 2582 fps | 95.3% |
| Winchester 748 | 28.5 gr | 84% | 36,593 psi | 76% | 2743 fps | 95.4% |
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 44 powders for 6 x 52 R BB2 loaded with the .243 | 80gr | Hasler Hunting. IMR 3031 delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,841 fps to 2,887 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 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, Winchester 748 rank at the top here: for 6 x 52 R BB2 with the .243 | 80gr | Hasler Hunting 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.