Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 95gr | Nosler Partition bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Accurate 4064.
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>> | 88% | 43,308 psi | 90% | 2516 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 41,350 psi | 86% | 2510 fps | 98.6% |
| Accurate 2495 | <<locked>> | 94% | 41,394 psi | 86% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 41,408 psi | 87% | 2549 fps | 98.3% |
| Accurate 4064 | <<locked>> | 96% | 41,031 psi | 86% | 2566 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 43,207 psi | 90% | 2562 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 41,989 psi | 88% | 2520 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 90% | 42,772 psi | 89% | 2585 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 42,177 psi | 88% | 2602 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 41,278 psi | 86% | 2559 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 82% | 40,988 psi | 86% | 2487 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 40,553 psi | 85% | 2559 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 42,105 psi | 88% | 2477 fps | 97.3% |
| Hodgdon BL-C2 | <<locked>> | 90% | 42,380 psi | 89% | 2585 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 84% | 42,192 psi | 88% | 2546 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 84% | 42,844 psi | 90% | 2559 fps | 99% |
| Hodgdon H4895 | <<locked>> | 90% | 42,612 psi | 89% | 2566 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 43,178 psi | 90% | 2621 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,533 psi | 70% | 1617 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 40,350 psi | 84% | 2569 fps | 99.7% |
| IMR 4198 | <<locked>> | 82% | 41,959 psi | 88% | 2461 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 41,989 psi | 88% | 2520 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 84% | 41,060 psi | 86% | 2503 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 92% | 42,598 psi | 89% | 2582 fps | 98.5% |
| Lovex S062 | <<locked>> | 94% | 41,843 psi | 87% | 2536 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 41,147 psi | 86% | 2507 fps | 96.6% |
| Norma 202 | <<locked>> | 90% | 41,336 psi | 86% | 2533 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,214 psi | 69% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 42,003 psi | 88% | 2520 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 42,032 psi | 88% | 2641 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 88% | 42,612 psi | 89% | 2520 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 92% | 41,481 psi | 87% | 2503 fps | 96.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,033 psi | 90% | 2595 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 92% | 42,598 psi | 89% | 2582 fps | 98.5% |
| Shooters World Precision | <<locked>> | 94% | 41,843 psi | 87% | 2536 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 41,495 psi | 87% | 2474 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 41,350 psi | 86% | 2490 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 41,205 psi | 86% | 2444 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 42,728 psi | 89% | 2484 fps | 99.5% |
| Somchem S321 | <<locked>> | 86% | 42,424 psi | 89% | 2552 fps | 97.2% |
| Somchem S335 | <<locked>> | 90% | 42,612 psi | 89% | 2487 fps | 99.4% |
| Somchem S355 | <<locked>> | 98% | 41,901 psi | 88% | 2559 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 84% | 41,597 psi | 87% | 2448 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 40,915 psi | 85% | 2448 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 94% | 42,409 psi | 89% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 41,263 psi | 86% | 2510 fps | 99% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,772 psi | 89% | 2546 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 88% | 42,221 psi | 88% | 2520 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 94% | 42,467 psi | 89% | 2546 fps | 98.9% |
| Winchester 748 | <<locked>> | 90% | 43,076 psi | 90% | 2602 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 42,482 psi | 89% | 2572 fps | 96.1% |
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% | 33,721 psi | 70% | 2336 fps | 99.2% |
| Accurate 2460 | <<locked>> | 80% | 35,969 psi | 75% | 2405 fps | 97.4% |
| Accurate 2495 | <<locked>> | 80% | 25,918 psi | 54% | 2215 fps | 97.4% |
| Accurate 2520 | <<locked>> | 80% | 31,459 psi | 66% | 2343 fps | 95.5% |
| Accurate 4064 | 22.6 gr | 84% | 28,036 psi | 59% | 2280 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 40,219 psi | 84% | 2510 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 37,014 psi | 77% | 2421 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 30,763 psi | 64% | 2352 fps | 99.9% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 39,682 psi | 83% | 2552 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 38,479 psi | 80% | 2507 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,595 psi | 81% | 2444 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 37,753 psi | 79% | 2503 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,157 psi | 73% | 2339 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 84% | 34,360 psi | 72% | 2425 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 36,999 psi | 77% | 2444 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 80% | 37,275 psi | 78% | 2454 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 88% | 39,755 psi | 83% | 2510 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 38,145 psi | 80% | 2520 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,613 psi | 51% | 1440 fps | 100% |
| IMR 3031 | 21.3 gr | 80% | 29,486 psi | 62% | 2326 fps | 97.4% |
| IMR 4198 | <<locked>> | 80% | 39,494 psi | 83% | 2418 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 37,014 psi | 77% | 2421 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 80% | 35,694 psi | 75% | 2398 fps | 96% |
| Lovex D073.6 | <<locked>> | 84% | 32,343 psi | 68% | 2375 fps | 95.8% |
| Lovex S062 | <<locked>> | 90% | 36,854 psi | 77% | 2438 fps | 95.4% |
| Norma 201 | <<locked>> | 86% | 36,230 psi | 76% | 2408 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 29,718 psi | 62% | 2280 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,903 psi | 52% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,535 psi | 76% | 2415 fps | 96.7% |
| ReloadSwiss RS 60 | 27.1 gr | 94% | 36,724 psi | 77% | 2520 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 33,562 psi | 70% | 2333 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 88% | 36,564 psi | 76% | 2408 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 98% | 40,451 psi | 85% | 2549 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 32,343 psi | 68% | 2375 fps | 95.8% |
| Shooters World Precision | <<locked>> | 90% | 36,854 psi | 77% | 2438 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 38,711 psi | 81% | 2418 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,899 psi | 81% | 2444 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,097 psi | 67% | 2257 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,005 psi | 54% | 2126 fps | 95% |
| Somchem S321 | <<locked>> | 82% | 37,014 psi | 77% | 2444 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 31,401 psi | 66% | 2260 fps | 97% |
| Somchem S355 | <<locked>> | 96% | 39,088 psi | 82% | 2503 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 36,550 psi | 76% | 2356 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 31,923 psi | 67% | 2270 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 80% | 26,919 psi | 56% | 2228 fps | 97.5% |
| Vihtavuori N140 | <<locked>> | 80% | 28,398 psi | 59% | 2231 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 94% | 35,418 psi | 74% | 2405 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 84% | 37,043 psi | 77% | 2418 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 84% | 30,792 psi | 64% | 2306 fps | 95.7% |
| Winchester 748 | <<locked>> | 84% | 35,433 psi | 74% | 2448 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 39,682 psi | 83% | 2516 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 51 powders for 6 x 52 R Bretschneider loaded with the .243 | 95gr | Nosler Partition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,641 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,641 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Rottweil R 903 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, IMR 3031, Accurate 4064 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 95gr | Nosler Partition 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.