Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 107gr | Nosler Custom Competition bullet and 63 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% | 40,654 psi | 85% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,786 psi | 89% | 2474 fps | 99.8% |
| Accurate 4064 | <<locked>> | 88% | 40,770 psi | 85% | 2454 fps | 99.9% |
| Accurate 4350 | <<locked>> | 98% | 41,887 psi | 88% | 2533 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 84% | 42,743 psi | 89% | 2477 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 88% | 40,973 psi | 86% | 2425 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,264 psi | 88% | 2441 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 82% | 41,350 psi | 86% | 2444 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,307 psi | 86% | 2539 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,786 psi | 89% | 2497 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 88% | 43,308 psi | 90% | 2507 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,409 psi | 89% | 2539 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,728 psi | 89% | 2579 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,481 psi | 87% | 2470 fps | 96.4% |
| Bofors RP3 | <<locked>> | 90% | 42,206 psi | 88% | 2497 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 84% | 43,250 psi | 90% | 2507 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 84% | 43,033 psi | 90% | 2487 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,234 psi | 86% | 2484 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,350 psi | 86% | 2507 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 73% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,423 psi | 87% | 2441 fps | 98% |
| IMR 3031 | <<locked>> | 84% | 41,785 psi | 87% | 2487 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 43,018 psi | 90% | 2457 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,004 psi | 90% | 2533 fps | 96.8% |
| IMR 4895 | <<locked>> | 86% | 41,611 psi | 87% | 2487 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 42,264 psi | 88% | 2441 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 84% | 41,220 psi | 86% | 2457 fps | 99.6% |
| Lovex S060 | <<locked>> | 82% | 40,843 psi | 85% | 2375 fps | 97.4% |
| Lovex S062 | <<locked>> | 88% | 42,757 psi | 89% | 2464 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 41,684 psi | 87% | 2431 fps | 98.7% |
| Norma 202 | <<locked>> | 84% | 42,018 psi | 88% | 2448 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 42,554 psi | 89% | 2493 fps | 97.9% |
| Norma URP | <<locked>> | 98% | 42,032 psi | 88% | 2526 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 88% | 42,482 psi | 89% | 2513 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 41,220 psi | 86% | 2454 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 73% | 1621 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 42,496 psi | 89% | 2556 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 42,482 psi | 89% | 2585 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 41,771 psi | 87% | 2546 fps | 96% |
| Rottweil R 901 | <<locked>> | 82% | 42,989 psi | 90% | 2431 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 86% | 42,409 psi | 89% | 2438 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 92% | 42,119 psi | 88% | 2487 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,220 psi | 86% | 2457 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 42,757 psi | 89% | 2464 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 41,060 psi | 86% | 2493 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 43,105 psi | 90% | 2461 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 41,060 psi | 86% | 2444 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 40,959 psi | 86% | 2352 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 43,062 psi | 90% | 2398 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,888 psi | 90% | 2398 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,322 psi | 88% | 2454 fps | 97.6% |
| Somchem S355 | <<locked>> | 92% | 43,192 psi | 90% | 2493 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,030 psi | 84% | 2530 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 82% | 41,031 psi | 86% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 41,249 psi | 86% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,192 psi | 88% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 41,350 psi | 86% | 2434 fps | 99% |
| Vihtavuori N160 | <<locked>> | 96% | 41,930 psi | 88% | 2484 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 42,351 psi | 88% | 2438 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 86% | 40,785 psi | 85% | 2421 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,772 psi | 89% | 2474 fps | 98.3% |
| Winchester 748 | <<locked>> | 82% | 41,249 psi | 86% | 2477 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 43,004 psi | 90% | 2497 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% | 33,707 psi | 70% | 2293 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,668 psi | 83% | 2421 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 31,894 psi | 67% | 2277 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 39,073 psi | 82% | 2480 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 37,710 psi | 79% | 2379 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 36,564 psi | 76% | 2336 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,726 psi | 83% | 2395 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 38,595 psi | 81% | 2398 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,841 psi | 81% | 2487 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,082 psi | 65% | 2254 fps | 95.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,853 psi | 75% | 2359 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,929 psi | 83% | 2490 fps | 95.7% |
| Alliant Reloder-17 | 28.1 gr | 88% | 34,838 psi | 73% | 2408 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,044 psi | 82% | 2421 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 30,168 psi | 63% | 2247 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,797 psi | 79% | 2408 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 80% | 37,985 psi | 79% | 2388 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,127 psi | 71% | 2339 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,953 psi | 71% | 2352 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,599 psi | 53% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,550 psi | 76% | 2346 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 36,912 psi | 77% | 2398 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,969 psi | 75% | 2320 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 37,840 psi | 79% | 2438 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,432 psi | 72% | 2339 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 39,726 psi | 83% | 2395 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 35,795 psi | 75% | 2356 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 38,435 psi | 80% | 2326 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 33,243 psi | 69% | 2274 fps | 96.7% |
| Norma 201 | <<locked>> | 80% | 37,144 psi | 78% | 2343 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 36,999 psi | 77% | 2356 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 33,069 psi | 69% | 2300 fps | 95% |
| Norma URP | <<locked>> | 96% | 39,479 psi | 82% | 2477 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 82% | 34,635 psi | 72% | 2352 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,754 psi | 81% | 2408 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,976 psi | 54% | 1450 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,912 psi | 77% | 2444 fps | 95.7% |
| ReloadSwiss RS 60 | 25.6 gr | 80% | 28,863 psi | 60% | 2260 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 39,233 psi | 82% | 2497 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 40,814 psi | 85% | 2392 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,143 psi | 73% | 2293 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 84% | 32,489 psi | 68% | 2293 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,795 psi | 75% | 2356 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 33,243 psi | 69% | 2274 fps | 96.7% |
| SNPE Vectan SP 11 | 26.4 gr | 84% | 33,808 psi | 71% | 2339 fps | 95% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,059 psi | 84% | 2405 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,274 psi | 76% | 2349 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,841 psi | 81% | 2316 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,821 psi | 66% | 2192 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 38,290 psi | 80% | 2320 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,985 psi | 77% | 2352 fps | 96.2% |
| Somchem S355 | <<locked>> | 82% | 31,517 psi | 66% | 2254 fps | 95% |
| Somchem S365 | <<locked>> | 90% | 29,341 psi | 61% | 2277 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 38,899 psi | 81% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,156 psi | 71% | 2297 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,853 psi | 73% | 2293 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,079 psi | 59% | 2156 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 94% | 38,972 psi | 81% | 2428 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 39,334 psi | 82% | 2382 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,518 psi | 70% | 2280 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,083 psi | 69% | 2274 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 38,290 psi | 80% | 2421 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,288 psi | 74% | 2346 fps | 96.5% |
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 63 powders for 6 x 52 R BB2 loaded with the .243 | 107gr | Nosler Custom Competition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,585 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,585 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 63 of the 63 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 107.0 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 | 107gr | Nosler Custom Competition 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.