Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 100gr | Berger BT Target bullet and 60 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 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% | 42,453 psi | 89% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 42,148 psi | 88% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,205 psi | 86% | 2536 fps | 99.3% |
| Accurate 4064 | <<locked>> | 90% | 42,119 psi | 88% | 2569 fps | 99.9% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,931 psi | 90% | 2638 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 41,365 psi | 86% | 2536 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 90% | 42,598 psi | 89% | 2539 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,046 psi | 86% | 2507 fps | 98% |
| Alliant AR-Comp | <<locked>> | 84% | 42,699 psi | 89% | 2559 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 43,134 psi | 90% | 2661 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,234 psi | 86% | 2556 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,148 psi | 88% | 2572 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,278 psi | 86% | 2635 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,279 psi | 90% | 2589 fps | 96.2% |
| Bofors RP3 | <<locked>> | 90% | 40,857 psi | 85% | 2562 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 43,178 psi | 90% | 2503 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 41,626 psi | 87% | 2566 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,859 psi | 90% | 2641 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 84% | 41,684 psi | 87% | 2549 fps | 97.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,842 psi | 83% | 2543 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,670 psi | 89% | 2618 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,301 psi | 72% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 43,105 psi | 90% | 2559 fps | 97.8% |
| IMR 3031 | <<locked>> | 86% | 43,076 psi | 90% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,076 psi | 88% | 2526 fps | 96.6% |
| IMR 4895 | <<locked>> | 88% | 43,149 psi | 90% | 2605 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 82% | 41,046 psi | 86% | 2507 fps | 98% |
| Lovex D073.6 | <<locked>> | 86% | 42,641 psi | 89% | 2575 fps | 99.5% |
| Lovex S060 | <<locked>> | 84% | 42,264 psi | 88% | 2487 fps | 97.1% |
| Lovex S062 | <<locked>> | 88% | 41,278 psi | 86% | 2526 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 40,422 psi | 84% | 2493 fps | 98% |
| Norma 202 | <<locked>> | 86% | 43,279 psi | 90% | 2559 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 41,423 psi | 87% | 2562 fps | 97% |
| Ramshot Big Game | <<locked>> | 88% | 41,147 psi | 86% | 2572 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 42,685 psi | 89% | 2569 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,548 psi | 72% | 1683 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 40,814 psi | 85% | 2612 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,133 psi | 86% | 2644 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 41,887 psi | 88% | 2500 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 86% | 41,089 psi | 86% | 2500 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 92% | 40,770 psi | 85% | 2552 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 42,641 psi | 89% | 2575 fps | 99.5% |
| Shooters World Precision | <<locked>> | 88% | 41,278 psi | 86% | 2526 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,250 psi | 88% | 2602 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,511 psi | 89% | 2556 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 42,554 psi | 89% | 2467 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,119 psi | 88% | 2470 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 41,611 psi | 87% | 2467 fps | 99.9% |
| Somchem S341 | <<locked>> | 84% | 41,147 psi | 86% | 2520 fps | 96.7% |
| Somchem S355 | <<locked>> | 92% | 41,945 psi | 88% | 2559 fps | 97.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,522 psi | 80% | 2582 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 84% | 42,569 psi | 89% | 2467 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 42,511 psi | 89% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 40,756 psi | 85% | 2493 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 94% | 42,728 psi | 89% | 2546 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 41,046 psi | 86% | 2500 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 88% | 42,235 psi | 88% | 2536 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,292 psi | 86% | 2526 fps | 97.3% |
| Winchester 748 | <<locked>> | 84% | 42,337 psi | 88% | 2585 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 86% | 41,756 psi | 87% | 2559 fps | 97.7% |
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% | 39,856 psi | 83% | 2444 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,155 psi | 67% | 2349 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 38,261 psi | 80% | 2480 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 30,443 psi | 64% | 2326 fps | 97.9% |
| Accurate 4350 | <<locked>> | 98% | 40,103 psi | 84% | 2585 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 36,651 psi | 77% | 2438 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 86% | 37,724 psi | 79% | 2444 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,624 psi | 81% | 2457 fps | 97.5% |
| Alliant AR-Comp | <<locked>> | 80% | 37,333 psi | 78% | 2470 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 40,190 psi | 84% | 2598 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,053 psi | 67% | 2359 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,927 psi | 77% | 2467 fps | 95% |
| Alliant Reloder-17 | 29.5 gr | 90% | 36,260 psi | 76% | 2520 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,408 psi | 84% | 2533 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 33,417 psi | 70% | 2405 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,698 psi | 85% | 2457 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,405 psi | 76% | 2464 fps | 97.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,885 psi | 83% | 2579 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 80% | 36,854 psi | 77% | 2451 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,273 psi | 74% | 2441 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,866 psi | 69% | 2405 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,440 psi | 53% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,505 psi | 74% | 2405 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 35,331 psi | 74% | 2457 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 36,796 psi | 77% | 2418 fps | 95% |
| IMR 4895 | <<locked>> | 82% | 35,476 psi | 74% | 2444 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,624 psi | 81% | 2457 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 80% | 34,505 psi | 72% | 2415 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 37,507 psi | 78% | 2392 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 32,271 psi | 67% | 2333 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 35,737 psi | 75% | 2398 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 35,882 psi | 75% | 2418 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 36,260 psi | 76% | 2454 fps | 95.5% |
| Ramshot Big Game | 28.6 gr | 86% | 38,406 psi | 80% | 2516 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,434 psi | 78% | 2464 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,773 psi | 54% | 1506 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 38,319 psi | 80% | 2559 fps | 95.4% |
| ReloadSwiss RS 60 | 26.8 gr | 82% | 29,602 psi | 62% | 2356 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 39,392 psi | 82% | 2454 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 34,171 psi | 71% | 2356 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 33,330 psi | 70% | 2395 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,505 psi | 72% | 2415 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 32,271 psi | 67% | 2333 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,492 psi | 78% | 2503 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,362 psi | 78% | 2454 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,521 psi | 78% | 2375 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,676 psi | 64% | 2244 fps | 98.5% |
| Somchem S335 | <<locked>> | 80% | 36,898 psi | 77% | 2375 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 36,071 psi | 75% | 2418 fps | 95.2% |
| Somchem S355 | <<locked>> | 86% | 34,882 psi | 73% | 2415 fps | 95.6% |
| Somchem S365 | <<locked>> | 94% | 32,097 psi | 67% | 2428 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 37,565 psi | 78% | 2379 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,721 psi | 68% | 2352 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,794 psi | 71% | 2356 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 30,850 psi | 64% | 2300 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,174 psi | 80% | 2448 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 32,430 psi | 68% | 2339 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,434 psi | 76% | 2425 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 36,970 psi | 77% | 2480 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,026 psi | 71% | 2402 fps | 95.3% |
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 60 powders for 6 x 52 R BB2 loaded with the .243 | 100gr | Berger BT Target. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,661 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,661 fps. Accurate 4350 gives the best case fill at 100 %, and 60 of the 60 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 100.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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, Ramshot Big Game rank at the top here: for 6 x 52 R BB2 with the .243 | 100gr | Berger BT 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.