Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 105gr | Berger Hybrid Target bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Ramshot Big Game.
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% | 43,120 psi | 90% | 2434 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 43,149 psi | 90% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,134 psi | 88% | 2490 fps | 99.6% |
| Accurate 4064 | <<locked>> | 90% | 43,192 psi | 90% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 41,017 psi | 86% | 2543 fps | 96% |
| ADI AR 2206H | <<locked>> | 84% | 42,148 psi | 88% | 2490 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 88% | 40,857 psi | 85% | 2448 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,742 psi | 87% | 2454 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 82% | 40,727 psi | 85% | 2461 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,147 psi | 86% | 2562 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,192 psi | 88% | 2510 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 88% | 43,105 psi | 90% | 2526 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,814 psi | 87% | 2549 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,032 psi | 88% | 2589 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,307 psi | 86% | 2490 fps | 96.2% |
| Bofors RP3 | <<locked>> | 90% | 41,974 psi | 88% | 2516 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,641 psi | 89% | 2523 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 84% | 42,453 psi | 89% | 2500 fps | 98.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,553 psi | 85% | 2497 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 40,712 psi | 85% | 2520 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,418 psi | 72% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,321 psi | 86% | 2464 fps | 97.8% |
| IMR 3031 | <<locked>> | 84% | 41,611 psi | 87% | 2510 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,859 psi | 90% | 2477 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,206 psi | 88% | 2546 fps | 96.4% |
| IMR 4895 | <<locked>> | 86% | 41,002 psi | 86% | 2500 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 82% | 41,742 psi | 87% | 2454 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 84% | 40,553 psi | 85% | 2474 fps | 99.5% |
| Lovex S060 | <<locked>> | 84% | 42,902 psi | 90% | 2434 fps | 97.7% |
| Lovex S062 | <<locked>> | 88% | 42,148 psi | 88% | 2477 fps | 98.7% |
| Norma 201 | <<locked>> | 84% | 41,568 psi | 87% | 2451 fps | 98.6% |
| Norma 202 | <<locked>> | 84% | 41,452 psi | 87% | 2464 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 42,366 psi | 89% | 2516 fps | 97.7% |
| Norma URP | <<locked>> | 98% | 41,756 psi | 87% | 2543 fps | 96% |
| Ramshot Big Game | <<locked>> | 88% | 41,785 psi | 87% | 2523 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,625 psi | 85% | 2467 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,708 psi | 73% | 1634 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,843 psi | 87% | 2566 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 42,250 psi | 88% | 2605 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 42,946 psi | 90% | 2454 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 41,858 psi | 87% | 2451 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 92% | 41,887 psi | 88% | 2510 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 40,553 psi | 85% | 2474 fps | 99.5% |
| Shooters World Precision | <<locked>> | 88% | 42,148 psi | 88% | 2477 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,799 psi | 85% | 2513 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,915 psi | 85% | 2464 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 43,134 psi | 90% | 2415 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,917 psi | 90% | 2421 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,772 psi | 89% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,148 psi | 88% | 2477 fps | 97.4% |
| Somchem S355 | <<locked>> | 92% | 42,989 psi | 90% | 2516 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,740 psi | 83% | 2546 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 43,192 psi | 90% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 40,611 psi | 85% | 2438 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,003 psi | 88% | 2451 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 41,118 psi | 86% | 2454 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 41,800 psi | 87% | 2451 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 88% | 42,743 psi | 89% | 2480 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 43,105 psi | 90% | 2552 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,467 psi | 89% | 2490 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 40,625 psi | 85% | 2490 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 42,815 psi | 89% | 2516 fps | 98.3% |
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% | 40,451 psi | 85% | 2392 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,185 psi | 69% | 2310 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,073 psi | 82% | 2434 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 31,401 psi | 66% | 2290 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 38,319 psi | 80% | 2490 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 37,231 psi | 78% | 2392 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 84% | 36,100 psi | 75% | 2349 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,218 psi | 82% | 2408 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 38,029 psi | 79% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,276 psi | 80% | 2497 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,647 psi | 64% | 2267 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,360 psi | 74% | 2372 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,320 psi | 82% | 2500 fps | 95.3% |
| Alliant Reloder-17 | 28.3 gr | 88% | 34,650 psi | 72% | 2425 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,479 psi | 80% | 2434 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 32,024 psi | 67% | 2313 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,231 psi | 78% | 2418 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,507 psi | 78% | 2405 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,968 psi | 71% | 2356 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,489 psi | 70% | 2362 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 54% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,056 psi | 75% | 2359 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 36,405 psi | 76% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,520 psi | 74% | 2333 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 39,639 psi | 83% | 2497 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 33,968 psi | 71% | 2352 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 39,218 psi | 82% | 2408 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 35,650 psi | 74% | 2379 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 37,971 psi | 79% | 2339 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 32,808 psi | 69% | 2287 fps | 96.3% |
| Norma 201 | <<locked>> | 80% | 36,695 psi | 77% | 2356 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 36,506 psi | 76% | 2369 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 34,751 psi | 73% | 2362 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 39,218 psi | 82% | 2493 fps | 95.2% |
| Ramshot Big Game | 27.4 gr | 84% | 36,666 psi | 77% | 2421 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,203 psi | 80% | 2421 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,744 psi | 54% | 1460 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,347 psi | 76% | 2454 fps | 95.3% |
| ReloadSwiss RS 60 | 25.7 gr | 80% | 28,471 psi | 59% | 2267 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 40,350 psi | 84% | 2408 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 34,708 psi | 73% | 2306 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 32,300 psi | 67% | 2313 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,650 psi | 74% | 2379 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 32,808 psi | 69% | 2287 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,766 psi | 75% | 2408 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,795 psi | 75% | 2359 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,377 psi | 80% | 2329 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,430 psi | 66% | 2201 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 37,826 psi | 79% | 2333 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,825 psi | 77% | 2375 fps | 96% |
| Somchem S355 | <<locked>> | 84% | 33,431 psi | 70% | 2323 fps | 95.6% |
| Somchem S365 | <<locked>> | 92% | 30,705 psi | 64% | 2336 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 38,450 psi | 80% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,649 psi | 70% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,403 psi | 72% | 2306 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 29,863 psi | 62% | 2221 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 39,233 psi | 82% | 2405 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 33,054 psi | 69% | 2293 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 40,495 psi | 85% | 2503 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,896 psi | 73% | 2336 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 38,145 psi | 80% | 2441 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,766 psi | 73% | 2359 fps | 96.1% |
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 62 powders for 6 x 52 R BB2 loaded with the .243 | 105gr | Berger Hybrid Target. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,605 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,605 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 62 of the 62 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 105.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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. Alliant Reloder-17, ReloadSwiss RS 60, Ramshot Big Game rank at the top here: for 6 x 52 R BB2 with the .243 | 105gr | Berger Hybrid Target 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.