Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 105gr | 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 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% | 43,221 psi | 90% | 2434 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 42,873 psi | 90% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,771 psi | 87% | 2480 fps | 99.6% |
| Accurate 4064 | <<locked>> | 90% | 42,873 psi | 90% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 41,176 psi | 86% | 2543 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 42,279 psi | 88% | 2490 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 90% | 43,120 psi | 90% | 2487 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,872 psi | 87% | 2457 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 82% | 40,857 psi | 85% | 2461 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 40,828 psi | 85% | 2552 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,279 psi | 88% | 2510 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,815 psi | 89% | 2520 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,901 psi | 88% | 2552 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,192 psi | 88% | 2592 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,002 psi | 86% | 2484 fps | 96.1% |
| Bofors RP3 | <<locked>> | 90% | 41,640 psi | 87% | 2510 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,728 psi | 89% | 2523 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 90% | 43,120 psi | 90% | 2513 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 84% | 42,598 psi | 89% | 2500 fps | 98.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,683 psi | 85% | 2497 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 40,857 psi | 85% | 2520 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,476 psi | 72% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,988 psi | 86% | 2457 fps | 97.7% |
| IMR 3031 | <<locked>> | 84% | 41,249 psi | 86% | 2500 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,569 psi | 89% | 2470 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,380 psi | 89% | 2546 fps | 96.5% |
| IMR 4895 | <<locked>> | 86% | 41,147 psi | 86% | 2503 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 82% | 41,872 psi | 87% | 2457 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 84% | 40,683 psi | 85% | 2474 fps | 99.5% |
| Lovex S060 | <<locked>> | 84% | 43,033 psi | 90% | 2438 fps | 97.7% |
| Lovex S062 | <<locked>> | 88% | 42,293 psi | 88% | 2477 fps | 98.7% |
| Norma 201 | <<locked>> | 84% | 41,220 psi | 86% | 2444 fps | 98.5% |
| Norma 202 | <<locked>> | 84% | 41,553 psi | 87% | 2464 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 42,061 psi | 88% | 2510 fps | 97.6% |
| Norma URP | <<locked>> | 98% | 41,452 psi | 87% | 2536 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 88% | 41,945 psi | 88% | 2526 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,727 psi | 85% | 2470 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 73% | 1634 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,916 psi | 88% | 2566 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,945 psi | 88% | 2598 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 42,612 psi | 89% | 2448 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 41,974 psi | 88% | 2451 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 92% | 41,553 psi | 87% | 2500 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 40,683 psi | 85% | 2474 fps | 99.5% |
| Shooters World Precision | <<locked>> | 88% | 42,293 psi | 88% | 2477 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,553 psi | 85% | 2507 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,582 psi | 85% | 2457 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 43,265 psi | 90% | 2415 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,627 psi | 89% | 2415 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,438 psi | 89% | 2415 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 41,829 psi | 87% | 2467 fps | 97.3% |
| Somchem S355 | <<locked>> | 92% | 42,627 psi | 89% | 2507 fps | 98.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,436 psi | 82% | 2539 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 43,308 psi | 90% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 40,741 psi | 85% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 41,669 psi | 87% | 2444 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 40,843 psi | 85% | 2448 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 82% | 41,945 psi | 88% | 2454 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 88% | 42,902 psi | 90% | 2484 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 42,830 psi | 89% | 2546 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,206 psi | 88% | 2484 fps | 98% |
| Winchester 748 | <<locked>> | 82% | 40,756 psi | 85% | 2490 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 42,482 psi | 89% | 2510 fps | 98.2% |
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% | 40,553 psi | 85% | 2392 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,895 psi | 69% | 2300 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,218 psi | 82% | 2434 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 31,125 psi | 65% | 2283 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 38,435 psi | 80% | 2490 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 37,347 psi | 78% | 2392 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 38,130 psi | 80% | 2392 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,334 psi | 82% | 2408 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 38,145 psi | 80% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,406 psi | 80% | 2500 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,705 psi | 64% | 2267 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,476 psi | 74% | 2372 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,450 psi | 82% | 2500 fps | 95.3% |
| Alliant Reloder-17 | 28.2 gr | 88% | 34,418 psi | 72% | 2418 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,609 psi | 81% | 2434 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 32,126 psi | 67% | 2316 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,304 psi | 78% | 2418 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 88% | 40,495 psi | 85% | 2467 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,565 psi | 78% | 2402 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,707 psi | 70% | 2349 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,591 psi | 70% | 2365 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,425 psi | 53% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,158 psi | 76% | 2359 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 36,056 psi | 75% | 2405 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 37,521 psi | 78% | 2372 fps | 95.7% |
| IMR 4831 | <<locked>> | 98% | 39,740 psi | 83% | 2497 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 34,026 psi | 71% | 2352 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 39,334 psi | 82% | 2408 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 35,360 psi | 74% | 2372 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 38,087 psi | 80% | 2343 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 32,895 psi | 69% | 2287 fps | 96.3% |
| Norma 201 | <<locked>> | 80% | 36,405 psi | 76% | 2349 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 36,622 psi | 77% | 2372 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 34,824 psi | 73% | 2362 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 38,957 psi | 81% | 2487 fps | 95.1% |
| Ramshot Big Game | 27.4 gr | 84% | 36,724 psi | 77% | 2421 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,942 psi | 79% | 2415 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 54% | 1460 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,477 psi | 76% | 2454 fps | 95.3% |
| ReloadSwiss RS 60 | 25.7 gr | 80% | 28,529 psi | 60% | 2270 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 40,016 psi | 84% | 2402 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,809 psi | 73% | 2310 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 32,039 psi | 67% | 2306 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,360 psi | 74% | 2372 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,895 psi | 69% | 2287 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,868 psi | 75% | 2408 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,911 psi | 75% | 2362 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,058 psi | 80% | 2323 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,183 psi | 65% | 2198 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 37,550 psi | 78% | 2326 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 36,564 psi | 76% | 2369 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 33,185 psi | 69% | 2316 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 30,777 psi | 64% | 2339 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 38,116 psi | 80% | 2326 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,359 psi | 70% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,447 psi | 72% | 2306 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 29,573 psi | 62% | 2215 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,928 psi | 81% | 2398 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 33,141 psi | 69% | 2293 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 40,263 psi | 84% | 2497 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,650 psi | 72% | 2329 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 37,840 psi | 79% | 2434 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,838 psi | 73% | 2359 fps | 96.1% |
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 63 powders for 6 x 52 R BB2 loaded with the .243 | 105gr | Nosler Custom Competition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,598 fps; across all powders the maximum-charge window runs from 1,598 fps to 2,598 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 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, Ramshot Big Game rank at the top here: for 6 x 52 R BB2 with the .243 | 105gr | 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.