Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 100gr | MEN SP bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon BL-C2 and Hodgdon LEVERevolution.
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>> | 86% | 42,975 psi | 90% | 2451 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 40,669 psi | 85% | 2441 fps | 98.9% |
| Accurate 2495 | <<locked>> | 92% | 41,379 psi | 86% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 41,234 psi | 86% | 2487 fps | 98.8% |
| Accurate 4064 | <<locked>> | 94% | 41,118 psi | 86% | 2507 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 41,582 psi | 87% | 2484 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,582 psi | 87% | 2457 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 88% | 42,047 psi | 88% | 2510 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 41,887 psi | 88% | 2539 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 41,046 psi | 86% | 2500 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 43,062 psi | 90% | 2461 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 98% | 41,597 psi | 87% | 2569 fps | 96% |
| Bofors RP3 | <<locked>> | 94% | 40,451 psi | 85% | 2500 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,582 psi | 87% | 2418 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,669 psi | 87% | 2516 fps | 98% |
| Hodgdon H322 | <<locked>> | 82% | 41,814 psi | 87% | 2477 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 82% | 42,032 psi | 88% | 2487 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 88% | 41,785 psi | 87% | 2497 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 42,859 psi | 90% | 2562 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,924 psi | 71% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 43,279 psi | 90% | 2503 fps | 96.9% |
| IMR 3031 | <<locked>> | 90% | 43,207 psi | 90% | 2559 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 43,192 psi | 90% | 2549 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 86% | 41,582 psi | 87% | 2457 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 84% | 43,279 psi | 90% | 2487 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 90% | 42,511 psi | 89% | 2520 fps | 99% |
| Lovex S060 | <<locked>> | 88% | 43,163 psi | 90% | 2441 fps | 96.3% |
| Lovex S062 | <<locked>> | 92% | 41,553 psi | 87% | 2477 fps | 97.4% |
| Norma 201 | <<locked>> | 88% | 40,828 psi | 85% | 2448 fps | 97.2% |
| Norma 202 | <<locked>> | 88% | 40,567 psi | 85% | 2461 fps | 99.1% |
| Norma 203B | <<locked>> | 92% | 41,437 psi | 87% | 2507 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 88% | 43,033 psi | 90% | 2520 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 42,612 psi | 89% | 2454 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,663 psi | 70% | 1614 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,104 psi | 86% | 2451 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,553 psi | 87% | 2585 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 86% | 42,264 psi | 88% | 2457 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 90% | 41,162 psi | 86% | 2444 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 98% | 42,859 psi | 90% | 2536 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 42,511 psi | 89% | 2520 fps | 99% |
| Shooters World Precision | <<locked>> | 92% | 41,553 psi | 87% | 2477 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 42,380 psi | 89% | 2539 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 42,830 psi | 89% | 2507 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 43,134 psi | 90% | 2421 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 42,308 psi | 88% | 2421 fps | 99.8% |
| Somchem S321 | <<locked>> | 84% | 41,655 psi | 87% | 2484 fps | 97.6% |
| Somchem S335 | <<locked>> | 88% | 42,192 psi | 88% | 2425 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 41,713 psi | 87% | 2500 fps | 96.6% |
| Vihtavuori N130 | <<locked>> | 82% | 40,654 psi | 85% | 2372 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,946 psi | 90% | 2425 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 42,250 psi | 88% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 40,944 psi | 86% | 2448 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 98% | 42,453 psi | 89% | 2487 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 41,278 psi | 86% | 2451 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 92% | 42,119 psi | 88% | 2484 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,032 psi | 88% | 2467 fps | 96.1% |
| Winchester 748 | <<locked>> | 88% | 42,772 psi | 89% | 2539 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,177 psi | 88% | 2513 fps | 96.8% |
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% | 35,592 psi | 74% | 2316 fps | 99.7% |
| Accurate 2460 | <<locked>> | 80% | 37,956 psi | 79% | 2388 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 27,702 psi | 58% | 2205 fps | 98.6% |
| Accurate 2520 | <<locked>> | 80% | 33,373 psi | 70% | 2333 fps | 96.9% |
| Accurate 4064 | <<locked>> | 80% | 26,281 psi | 55% | 2178 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 86% | 39,291 psi | 82% | 2441 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,287 psi | 72% | 2310 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 32,532 psi | 68% | 2336 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,001 psi | 81% | 2484 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,172 psi | 76% | 2405 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,596 psi | 85% | 2418 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,885 psi | 81% | 2510 fps | 95% |
| Bofors RP3 | <<locked>> | 90% | 35,505 psi | 74% | 2405 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,796 psi | 77% | 2323 fps | 96.6% |
| Hodgdon BL-C2 | 23.7 gr | 80% | 31,937 psi | 67% | 2316 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 38,957 psi | 81% | 2428 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 80% | 39,247 psi | 82% | 2438 fps | 98.9% |
| Hodgdon H4895 | <<locked>> | 84% | 36,898 psi | 77% | 2398 fps | 95.2% |
| Hodgdon LEVERevolution | 25 gr | 86% | 35,476 psi | 74% | 2411 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,005 psi | 52% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,203 psi | 80% | 2408 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 31,183 psi | 65% | 2320 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 40,306 psi | 84% | 2493 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 34,287 psi | 72% | 2310 fps | 95% |
| Lovex D073.5 | <<locked>> | 80% | 37,652 psi | 79% | 2385 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 80% | 30,139 psi | 63% | 2267 fps | 95.7% |
| Lovex S060 | <<locked>> | 86% | 40,364 psi | 84% | 2388 fps | 95.5% |
| Lovex S062 | <<locked>> | 86% | 34,200 psi | 71% | 2329 fps | 95.2% |
| Norma 201 | <<locked>> | 82% | 33,997 psi | 71% | 2306 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 31,763 psi | 66% | 2280 fps | 97% |
| Norma 203B | <<locked>> | 90% | 38,638 psi | 81% | 2454 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 40,234 psi | 84% | 2467 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,914 psi | 83% | 2405 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,903 psi | 52% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,827 psi | 81% | 2405 fps | 97.9% |
| ReloadSwiss RS 60 | 26.2 gr | 90% | 34,084 psi | 71% | 2415 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 35,288 psi | 74% | 2320 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 84% | 34,301 psi | 72% | 2306 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 94% | 37,550 psi | 78% | 2438 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,139 psi | 63% | 2267 fps | 95.7% |
| Shooters World Precision | <<locked>> | 86% | 34,200 psi | 71% | 2329 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 40,059 psi | 84% | 2497 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 40,089 psi | 84% | 2454 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,692 psi | 70% | 2244 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,296 psi | 57% | 2113 fps | 96.4% |
| Somchem S321 | <<locked>> | 80% | 36,390 psi | 76% | 2382 fps | 96.2% |
| Somchem S335 | <<locked>> | 80% | 32,967 psi | 69% | 2247 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 36,724 psi | 77% | 2402 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 38,334 psi | 80% | 2333 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,576 psi | 70% | 2254 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 28,616 psi | 60% | 2218 fps | 98.7% |
| Vihtavuori N140 | <<locked>> | 80% | 29,950 psi | 63% | 2221 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 90% | 32,822 psi | 69% | 2300 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 34,258 psi | 72% | 2310 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 28,645 psi | 60% | 2201 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,334 psi | 82% | 2418 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 32,909 psi | 69% | 2336 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 36,811 psi | 77% | 2408 fps | 95.2% |
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 58 powders for 6 x 52 R Bretschneider loaded with the .243 | 100gr | MEN SP. 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 TrailBoss gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Winchester 6.5 StaBALL 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, Hodgdon BL-C2, Hodgdon LEVERevolution rank at the top here: for 6 x 52 R Bretschneider with the .243 | 100gr | MEN SP 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.