Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 105gr | Hornady A-MAX bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and SNPE Vectan SP 11.
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 2495 | <<locked>> | 88% | 43,265 psi | 90% | 2490 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,134 psi | 88% | 2490 fps | 99.7% |
| Accurate 4064 | <<locked>> | 90% | 43,221 psi | 90% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 41,510 psi | 87% | 2552 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 84% | 42,627 psi | 89% | 2500 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 88% | 40,843 psi | 85% | 2448 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,177 psi | 88% | 2464 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 82% | 40,785 psi | 85% | 2464 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,104 psi | 86% | 2562 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,656 psi | 89% | 2520 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 88% | 43,134 psi | 90% | 2530 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,148 psi | 88% | 2559 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,424 psi | 89% | 2598 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,698 psi | 87% | 2500 fps | 96.3% |
| Bofors RP3 | <<locked>> | 90% | 42,003 psi | 88% | 2520 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 84% | 43,091 psi | 90% | 2530 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 84% | 42,917 psi | 90% | 2513 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,930 psi | 86% | 2503 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,133 psi | 86% | 2530 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,606 psi | 72% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,321 psi | 86% | 2467 fps | 97.9% |
| IMR 3031 | <<locked>> | 84% | 41,698 psi | 87% | 2513 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,902 psi | 90% | 2480 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,641 psi | 89% | 2552 fps | 96.6% |
| IMR 4895 | <<locked>> | 86% | 41,481 psi | 87% | 2510 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 82% | 42,177 psi | 88% | 2464 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 84% | 41,017 psi | 86% | 2480 fps | 99.5% |
| Lovex S060 | <<locked>> | 82% | 40,785 psi | 85% | 2398 fps | 97.3% |
| Lovex S062 | <<locked>> | 88% | 42,627 psi | 89% | 2487 fps | 98.8% |
| Norma 201 | <<locked>> | 84% | 41,582 psi | 87% | 2454 fps | 98.6% |
| Norma 202 | <<locked>> | 84% | 41,930 psi | 88% | 2474 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 42,366 psi | 89% | 2520 fps | 97.7% |
| Norma URP | <<locked>> | 98% | 42,177 psi | 88% | 2556 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 88% | 42,206 psi | 88% | 2533 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 41,060 psi | 86% | 2477 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 73% | 1640 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 42,308 psi | 88% | 2579 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 42,163 psi | 88% | 2608 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 42,989 psi | 90% | 2457 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 42,337 psi | 88% | 2461 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 92% | 41,843 psi | 87% | 2510 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,017 psi | 86% | 2480 fps | 99.5% |
| Shooters World Precision | <<locked>> | 88% | 42,627 psi | 89% | 2487 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,785 psi | 85% | 2513 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,886 psi | 85% | 2467 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 40,959 psi | 86% | 2379 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,960 psi | 90% | 2421 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,772 psi | 89% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,569 psi | 89% | 2487 fps | 97.6% |
| Somchem S355 | <<locked>> | 92% | 42,960 psi | 90% | 2516 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,089 psi | 84% | 2556 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 41,017 psi | 86% | 2379 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 41,133 psi | 86% | 2448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,018 psi | 88% | 2454 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 41,104 psi | 86% | 2457 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 96% | 41,655 psi | 87% | 2507 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 41,800 psi | 87% | 2454 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 88% | 43,178 psi | 90% | 2490 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,380 psi | 89% | 2490 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 41,104 psi | 86% | 2500 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 42,830 psi | 89% | 2520 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 2495 | <<locked>> | 80% | 33,286 psi | 70% | 2313 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,581 psi | 83% | 2444 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 31,459 psi | 66% | 2293 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 38,769 psi | 81% | 2500 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 37,681 psi | 79% | 2402 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 36,114 psi | 75% | 2352 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,653 psi | 83% | 2418 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 38,537 psi | 81% | 2425 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,653 psi | 81% | 2510 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,038 psi | 65% | 2277 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,795 psi | 75% | 2382 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,711 psi | 83% | 2510 fps | 95.5% |
| Alliant Reloder-17 | 28.4 gr | 88% | 34,664 psi | 72% | 2428 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,885 psi | 81% | 2444 fps | 95.5% |
| Bofors RP3 | <<locked>> | 82% | 32,111 psi | 67% | 2316 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,623 psi | 79% | 2428 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,913 psi | 79% | 2415 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,982 psi | 71% | 2359 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,895 psi | 71% | 2375 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,614 psi | 54% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,492 psi | 76% | 2369 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 36,477 psi | 76% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,549 psi | 74% | 2336 fps | 95.1% |
| IMR 4831 | <<locked>> | 96% | 37,594 psi | 79% | 2454 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 34,360 psi | 72% | 2362 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 39,653 psi | 83% | 2418 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 35,723 psi | 75% | 2379 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 38,421 psi | 80% | 2352 fps | 96.6% |
| Lovex S062 | <<locked>> | 80% | 33,214 psi | 69% | 2300 fps | 96.5% |
| Norma 201 | <<locked>> | 80% | 36,709 psi | 77% | 2359 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 36,956 psi | 77% | 2379 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 35,157 psi | 73% | 2372 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 39,610 psi | 83% | 2503 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 82% | 34,505 psi | 72% | 2375 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,232 psi | 80% | 2425 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,976 psi | 54% | 1467 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,811 psi | 77% | 2467 fps | 95.5% |
| ReloadSwiss RS 60 | 25.9 gr | 80% | 28,761 psi | 60% | 2280 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 40,451 psi | 85% | 2411 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 35,114 psi | 73% | 2320 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 32,343 psi | 68% | 2316 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,723 psi | 75% | 2379 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 33,214 psi | 69% | 2300 fps | 96.5% |
| SNPE Vectan SP 11 | 27.4 gr | 86% | 36,114 psi | 75% | 2418 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,172 psi | 76% | 2372 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,406 psi | 80% | 2333 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,473 psi | 66% | 2208 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 37,884 psi | 79% | 2336 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,869 psi | 77% | 2375 fps | 96% |
| Somchem S355 | <<locked>> | 84% | 33,460 psi | 70% | 2326 fps | 95.6% |
| Somchem S365 | <<locked>> | 92% | 31,024 psi | 65% | 2349 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 38,508 psi | 80% | 2336 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,779 psi | 71% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,795 psi | 73% | 2316 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 80% | 28,007 psi | 59% | 2175 fps | 95% |
| Vihtavuori N160 | <<locked>> | 94% | 39,131 psi | 82% | 2457 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 39,247 psi | 82% | 2408 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 33,417 psi | 70% | 2303 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,824 psi | 73% | 2336 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 38,189 psi | 80% | 2444 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,143 psi | 73% | 2369 fps | 96.3% |
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 61 powders for 6 x 52 R BB2 loaded with the .243 | 105gr | Hornady A-MAX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,608 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 61 of the 61 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 1:8.5 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. ReloadSwiss RS 60, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 6 x 52 R BB2 with the .243 | 105gr | Hornady A-MAX 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.