Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 105gr | Speer Spitzer Soft Point bullet and 59 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% | 42,670 psi | 89% | 2493 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 42,641 psi | 89% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 40,930 psi | 86% | 2556 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 41,539 psi | 87% | 2493 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 88% | 42,540 psi | 89% | 2497 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 82% | 42,757 psi | 89% | 2503 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 43,033 psi | 90% | 2621 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 41,887 psi | 88% | 2520 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,351 psi | 88% | 2530 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,452 psi | 87% | 2566 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,626 psi | 87% | 2602 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,495 psi | 85% | 2493 fps | 96.3% |
| Bofors RP3 | <<locked>> | 88% | 41,220 psi | 86% | 2520 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,872 psi | 87% | 2523 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 88% | 42,467 psi | 89% | 2523 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 41,829 psi | 87% | 2507 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,743 psi | 89% | 2556 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 42,873 psi | 90% | 2575 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 73% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 43,149 psi | 90% | 2516 fps | 98.5% |
| IMR 3031 | <<locked>> | 82% | 40,814 psi | 85% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 42,105 psi | 88% | 2480 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 41,930 psi | 88% | 2556 fps | 96.7% |
| IMR 4895 | <<locked>> | 84% | 40,422 psi | 84% | 2507 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 84% | 43,018 psi | 90% | 2530 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 42,177 psi | 88% | 2441 fps | 97.8% |
| Lovex S062 | <<locked>> | 86% | 41,524 psi | 87% | 2484 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 40,596 psi | 85% | 2451 fps | 98.6% |
| Norma 202 | <<locked>> | 82% | 40,959 psi | 86% | 2467 fps | 99.9% |
| Norma 203B | <<locked>> | 86% | 41,626 psi | 87% | 2520 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 41,510 psi | 87% | 2556 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 86% | 41,278 psi | 86% | 2533 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,772 psi | 89% | 2526 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 73% | 1657 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,133 psi | 86% | 2569 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,452 psi | 87% | 2608 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,973 psi | 86% | 2572 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 84% | 41,249 psi | 86% | 2457 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 90% | 41,481 psi | 87% | 2516 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 43,018 psi | 90% | 2530 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 41,524 psi | 87% | 2484 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,757 psi | 89% | 2566 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,641 psi | 89% | 2513 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,569 psi | 89% | 2421 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 42,119 psi | 88% | 2421 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,742 psi | 87% | 2418 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,278 psi | 86% | 2477 fps | 97.6% |
| Somchem S355 | <<locked>> | 90% | 42,119 psi | 88% | 2516 fps | 98.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,814 psi | 87% | 2605 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 82% | 42,656 psi | 89% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,888 psi | 90% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,336 psi | 86% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 43,207 psi | 90% | 2507 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 41,002 psi | 86% | 2510 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 86% | 42,322 psi | 88% | 2487 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 42,772 psi | 89% | 2562 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,321 psi | 86% | 2490 fps | 98.2% |
| Winchester 748 | <<locked>> | 82% | 42,612 psi | 89% | 2543 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,974 psi | 88% | 2520 fps | 98.4% |
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% | 34,954 psi | 73% | 2356 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,069 psi | 69% | 2339 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 38,377 psi | 80% | 2507 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 39,146 psi | 82% | 2448 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 35,273 psi | 74% | 2349 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 40,059 psi | 84% | 2461 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,521 psi | 78% | 2503 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,184 psi | 67% | 2316 fps | 95.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,056 psi | 73% | 2379 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,117 psi | 82% | 2516 fps | 95.7% |
| Alliant Reloder-17 | 28.9 gr | 86% | 33,924 psi | 71% | 2428 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,826 psi | 79% | 2438 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,502 psi | 66% | 2313 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,030 psi | 82% | 2467 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 40,001 psi | 84% | 2474 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 39,421 psi | 82% | 2461 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,272 psi | 70% | 2359 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,128 psi | 73% | 2418 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,628 psi | 54% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,898 psi | 79% | 2411 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 38,276 psi | 80% | 2461 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,795 psi | 73% | 2333 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 37,130 psi | 78% | 2461 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,839 psi | 75% | 2408 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 80% | 37,260 psi | 78% | 2425 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,813 psi | 83% | 2395 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 34,650 psi | 72% | 2343 fps | 97.2% |
| Norma 201 | <<locked>> | 80% | 38,218 psi | 80% | 2405 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 38,130 psi | 80% | 2415 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,418 psi | 72% | 2369 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 38,682 psi | 81% | 2500 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 33,605 psi | 70% | 2369 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,943 psi | 83% | 2470 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,991 psi | 54% | 1483 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,955 psi | 75% | 2461 fps | 95.5% |
| ReloadSwiss RS 60 | 26.9 gr | 80% | 29,776 psi | 62% | 2329 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,232 psi | 80% | 2516 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 36,245 psi | 76% | 2356 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 31,705 psi | 66% | 2313 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,260 psi | 78% | 2425 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,650 psi | 72% | 2343 fps | 97.2% |
| SNPE Vectan SP 11 | 27.8 gr | 84% | 35,172 psi | 73% | 2411 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,565 psi | 78% | 2415 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,016 psi | 84% | 2375 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,880 psi | 69% | 2251 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 39,378 psi | 82% | 2379 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,508 psi | 80% | 2425 fps | 96.8% |
| Somchem S355 | <<locked>> | 82% | 32,808 psi | 69% | 2323 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 28,718 psi | 60% | 2300 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 40,118 psi | 84% | 2375 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,447 psi | 74% | 2359 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,274 psi | 76% | 2359 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 29,298 psi | 61% | 2221 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 38,232 psi | 80% | 2454 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,751 psi | 73% | 2343 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 39,914 psi | 83% | 2507 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,053 psi | 67% | 2290 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 40,089 psi | 84% | 2493 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,840 psi | 77% | 2418 fps | 97.1% |
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 59 powders for 6 x 52 R BB2 loaded with the .243 | 105gr | Speer Spitzer Soft Point. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,621 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,621 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 59 of the 59 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 1:10.0 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 | Speer Spitzer Soft Point 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.