Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 105gr | Berger BT Target 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>> | 86% | 41,423 psi | 87% | 2467 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 41,481 psi | 87% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 42,699 psi | 89% | 2579 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 40,872 psi | 85% | 2474 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 88% | 41,597 psi | 87% | 2470 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 43,018 psi | 90% | 2487 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 82% | 41,872 psi | 87% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,148 psi | 88% | 2595 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 40,828 psi | 85% | 2493 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,307 psi | 86% | 2503 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 98% | 43,134 psi | 90% | 2589 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,422 psi | 84% | 2569 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,409 psi | 89% | 2520 fps | 96.7% |
| Bofors RP3 | <<locked>> | 90% | 43,207 psi | 90% | 2549 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 40,828 psi | 85% | 2497 fps | 99% |
| Hodgdon H4895 | <<locked>> | 82% | 41,176 psi | 86% | 2487 fps | 98% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,930 psi | 88% | 2530 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,887 psi | 88% | 2549 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,708 psi | 73% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,119 psi | 88% | 2487 fps | 98.1% |
| IMR 3031 | <<locked>> | 84% | 42,714 psi | 89% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,060 psi | 86% | 2454 fps | 97% |
| IMR 4831 | <<locked>> | 98% | 41,060 psi | 86% | 2533 fps | 96.3% |
| IMR 4895 | <<locked>> | 86% | 42,264 psi | 88% | 2533 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 82% | 43,018 psi | 90% | 2487 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 84% | 41,872 psi | 87% | 2503 fps | 99.7% |
| Lovex S060 | <<locked>> | 82% | 41,597 psi | 87% | 2421 fps | 97.6% |
| Lovex S062 | <<locked>> | 86% | 40,872 psi | 85% | 2464 fps | 98.6% |
| Norma 201 | <<locked>> | 84% | 42,438 psi | 89% | 2477 fps | 98.8% |
| Norma 202 | <<locked>> | 84% | 42,757 psi | 89% | 2493 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 43,163 psi | 90% | 2543 fps | 98% |
| Norma URP | <<locked>> | 98% | 42,757 psi | 89% | 2572 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 88% | 42,859 psi | 90% | 2556 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 41,814 psi | 87% | 2500 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 73% | 1650 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 43,105 psi | 90% | 2602 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 43,192 psi | 90% | 2635 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 42,772 psi | 89% | 2598 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 86% | 42,699 psi | 89% | 2474 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 92% | 43,120 psi | 90% | 2539 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,872 psi | 87% | 2503 fps | 99.7% |
| Shooters World Precision | <<locked>> | 86% | 40,872 psi | 85% | 2464 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 41,858 psi | 87% | 2543 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 41,626 psi | 87% | 2487 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,843 psi | 87% | 2402 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,060 psi | 86% | 2398 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,075 psi | 86% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 43,265 psi | 90% | 2507 fps | 97.9% |
| Somchem S355 | <<locked>> | 90% | 41,553 psi | 87% | 2500 fps | 98.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,611 psi | 85% | 2575 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 82% | 41,916 psi | 88% | 2402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 41,640 psi | 87% | 2464 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,815 psi | 89% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,250 psi | 88% | 2484 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 96% | 42,670 psi | 89% | 2533 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 42,656 psi | 89% | 2477 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 86% | 41,321 psi | 86% | 2467 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 96% | 41,495 psi | 87% | 2533 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 43,221 psi | 90% | 2516 fps | 98.4% |
| Winchester 748 | <<locked>> | 82% | 41,945 psi | 88% | 2523 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 40,973 psi | 86% | 2493 fps | 98% |
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% | 34,156 psi | 71% | 2336 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,314 psi | 68% | 2316 fps | 98.9% |
| Accurate 4350 | <<locked>> | 94% | 36,941 psi | 77% | 2470 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 38,101 psi | 80% | 2418 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 36,840 psi | 77% | 2375 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,074 psi | 84% | 2434 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 39,175 psi | 82% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 39,320 psi | 82% | 2533 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,488 psi | 66% | 2293 fps | 95.5% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,550 psi | 76% | 2405 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,290 psi | 80% | 2490 fps | 95.2% |
| Alliant Reloder-17 | 28.3 gr | 86% | 33,185 psi | 69% | 2398 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,898 psi | 77% | 2411 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 30,821 psi | 64% | 2293 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,392 psi | 80% | 2451 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 80% | 38,363 psi | 80% | 2431 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,822 psi | 69% | 2339 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,243 psi | 72% | 2388 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,860 psi | 54% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,898 psi | 77% | 2385 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 37,478 psi | 78% | 2441 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,361 psi | 76% | 2359 fps | 95.6% |
| IMR 4831 | <<locked>> | 96% | 38,609 psi | 81% | 2484 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 34,809 psi | 73% | 2379 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 40,074 psi | 84% | 2434 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 36,535 psi | 76% | 2405 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 38,783 psi | 81% | 2369 fps | 96.9% |
| Lovex S062 | <<locked>> | 80% | 33,663 psi | 70% | 2316 fps | 96.8% |
| Norma 201 | <<locked>> | 80% | 37,565 psi | 78% | 2385 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 37,420 psi | 78% | 2395 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 33,431 psi | 70% | 2339 fps | 95.2% |
| Norma URP | <<locked>> | 94% | 37,855 psi | 79% | 2477 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 35,128 psi | 73% | 2395 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,986 psi | 81% | 2448 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,817 psi | 54% | 1470 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 37,608 psi | 79% | 2490 fps | 95.9% |
| ReloadSwiss RS 60 | 26.4 gr | 80% | 29,327 psi | 61% | 2306 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 39,813 psi | 83% | 2543 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 35,578 psi | 74% | 2336 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 31,096 psi | 65% | 2290 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,535 psi | 76% | 2405 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 33,663 psi | 70% | 2316 fps | 96.8% |
| SNPE Vectan SP 11 | 27.2 gr | 84% | 34,301 psi | 72% | 2382 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,564 psi | 76% | 2385 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,305 psi | 82% | 2356 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,242 psi | 67% | 2228 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 38,696 psi | 81% | 2359 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 37,594 psi | 79% | 2398 fps | 96.4% |
| Somchem S355 | <<locked>> | 82% | 32,184 psi | 67% | 2303 fps | 95.3% |
| Somchem S365 | <<locked>> | 90% | 29,747 psi | 62% | 2323 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 39,378 psi | 82% | 2359 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,664 psi | 72% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,592 psi | 74% | 2339 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 28,703 psi | 60% | 2201 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 94% | 39,697 psi | 83% | 2477 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 40,089 psi | 84% | 2431 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,142 psi | 71% | 2326 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 94% | 39,088 psi | 82% | 2484 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,301 psi | 70% | 2310 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 38,986 psi | 81% | 2467 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,882 psi | 75% | 2392 fps | 96.7% |
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 | Berger BT Target. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,635 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,635 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 73–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 6 x 52 R BB2 with the .243 | 105gr | 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.