Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 105gr | Geco SOFTPOINT bullet and 62 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 LEVERevolution and Bofors RP3.
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>> | 84% | 41,249 psi | 86% | 2359 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 42,061 psi | 88% | 2405 fps | 99.4% |
| Accurate 2495 | <<locked>> | 92% | 43,033 psi | 90% | 2448 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,844 psi | 90% | 2454 fps | 99.3% |
| Accurate 4064 | <<locked>> | 94% | 42,786 psi | 89% | 2474 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 40,553 psi | 85% | 2405 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,844 psi | 90% | 2421 fps | 98% |
| Alliant AR-Comp | <<locked>> | 86% | 40,959 psi | 86% | 2428 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 43,279 psi | 90% | 2503 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,612 psi | 89% | 2467 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 90% | 40,799 psi | 85% | 2431 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 42,583 psi | 89% | 2533 fps | 97% |
| Bofors RP3 | <<locked>> | 94% | 42,105 psi | 88% | 2474 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,670 psi | 89% | 2379 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 43,221 psi | 90% | 2484 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 84% | 41,684 psi | 87% | 2497 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 82% | 43,105 psi | 90% | 2438 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 86% | 40,756 psi | 85% | 2418 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 41,466 psi | 87% | 2480 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 71% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 42,163 psi | 88% | 2428 fps | 97.2% |
| IMR 3031 | <<locked>> | 88% | 41,684 psi | 87% | 2467 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 41,727 psi | 87% | 2464 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 86% | 42,844 psi | 90% | 2421 fps | 98% |
| Lovex D073.5 | <<locked>> | 82% | 41,742 psi | 87% | 2402 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 88% | 41,133 psi | 86% | 2438 fps | 99.1% |
| Lovex S060 | <<locked>> | 86% | 41,901 psi | 88% | 2362 fps | 96.6% |
| Lovex S062 | <<locked>> | 92% | 42,946 psi | 90% | 2441 fps | 98.2% |
| Norma 201 | <<locked>> | 88% | 42,134 psi | 88% | 2411 fps | 98% |
| Norma 202 | <<locked>> | 88% | 42,438 psi | 89% | 2434 fps | 99.6% |
| Norma 203B | <<locked>> | 92% | 42,917 psi | 90% | 2474 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 92% | 42,583 psi | 89% | 2480 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 41,611 psi | 87% | 2434 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 41,060 psi | 86% | 2369 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,272 psi | 72% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 42,337 psi | 88% | 2411 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 42,322 psi | 88% | 2523 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 43,033 psi | 90% | 2559 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 41,162 psi | 86% | 2375 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 90% | 42,496 psi | 89% | 2411 fps | 98% |
| Rottweil R 903 | <<locked>> | 96% | 42,003 psi | 88% | 2461 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 41,133 psi | 86% | 2438 fps | 99.1% |
| Shooters World Precision | <<locked>> | 92% | 42,946 psi | 90% | 2441 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 41,495 psi | 87% | 2470 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 41,408 psi | 87% | 2421 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,800 psi | 87% | 2339 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 41,089 psi | 86% | 2343 fps | 99.8% |
| Somchem S321 | <<locked>> | 84% | 43,033 psi | 90% | 2448 fps | 98.4% |
| Somchem S335 | <<locked>> | 86% | 41,089 psi | 86% | 2346 fps | 99.7% |
| Somchem S341 | <<locked>> | 88% | 43,033 psi | 90% | 2438 fps | 96.7% |
| Somchem S355 | <<locked>> | 96% | 43,192 psi | 90% | 2467 fps | 97.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,983 psi | 73% | 2385 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 82% | 42,206 psi | 88% | 2336 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 41,669 psi | 87% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 41,205 psi | 86% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 42,380 psi | 89% | 2408 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 96% | 41,553 psi | 87% | 2415 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 86% | 43,120 psi | 90% | 2425 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 90% | 40,756 psi | 85% | 2402 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 40,727 psi | 85% | 2392 fps | 96.4% |
| Winchester 748 | <<locked>> | 86% | 41,336 psi | 86% | 2454 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 40,799 psi | 85% | 2428 fps | 97% |
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% | 36,637 psi | 77% | 2280 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 39,653 psi | 83% | 2362 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 29,153 psi | 61% | 2185 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 34,606 psi | 72% | 2303 fps | 97.8% |
| Accurate 4064 | <<locked>> | 80% | 27,586 psi | 58% | 2159 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 84% | 38,319 psi | 80% | 2362 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,708 psi | 75% | 2287 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 33,591 psi | 70% | 2297 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,770 psi | 85% | 2457 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,346 psi | 74% | 2329 fps | 95.8% |
| Alliant Reloder-15 | <<locked>> | 88% | 38,537 psi | 81% | 2388 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 37,637 psi | 79% | 2434 fps | 95.3% |
| Bofors RP3 | 24.5 gr | 88% | 34,345 psi | 72% | 2323 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,695 psi | 79% | 2287 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,112 psi | 69% | 2287 fps | 96.1% |
| Hodgdon CFE223 | <<locked>> | 82% | 38,943 psi | 81% | 2444 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 40,132 psi | 84% | 2385 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 82% | 35,926 psi | 75% | 2323 fps | 95.5% |
| Hodgdon LEVERevolution | 24.2 gr | 84% | 34,272 psi | 72% | 2329 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,005 psi | 52% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 37,173 psi | 78% | 2329 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 32,198 psi | 67% | 2283 fps | 99.2% |
| IMR 4895 | <<locked>> | 86% | 36,753 psi | 77% | 2365 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 35,708 psi | 75% | 2287 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 80% | 39,392 psi | 82% | 2359 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 31,227 psi | 65% | 2241 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 37,043 psi | 77% | 2267 fps | 95.1% |
| Lovex S062 | <<locked>> | 84% | 33,344 psi | 70% | 2254 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 33,054 psi | 69% | 2231 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 32,779 psi | 68% | 2247 fps | 97.9% |
| Norma 203B | <<locked>> | 88% | 37,782 psi | 79% | 2379 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 90% | 39,813 psi | 83% | 2431 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,856 psi | 81% | 2385 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,464 psi | 80% | 2320 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,367 psi | 53% | 1414 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,958 psi | 83% | 2369 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 39,436 psi | 82% | 2467 fps | 95.2% |
| ReloadSwiss RS 60 | 24.9 gr | 86% | 31,198 psi | 65% | 2287 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 36,303 psi | 76% | 2283 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 33,388 psi | 70% | 2231 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 90% | 34,258 psi | 72% | 2313 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,227 psi | 65% | 2241 fps | 96.7% |
| Shooters World Precision | <<locked>> | 84% | 33,344 psi | 70% | 2254 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,812 psi | 81% | 2415 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,117 psi | 82% | 2379 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,998 psi | 73% | 2215 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,398 psi | 59% | 2090 fps | 97.4% |
| Somchem S321 | <<locked>> | 80% | 37,565 psi | 78% | 2346 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 34,316 psi | 72% | 2218 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 37,550 psi | 78% | 2339 fps | 95.1% |
| Somchem S355 | <<locked>> | 90% | 35,911 psi | 75% | 2329 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 33,054 psi | 69% | 2339 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 39,813 psi | 83% | 2297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,925 psi | 73% | 2224 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 29,936 psi | 63% | 2192 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 30,893 psi | 65% | 2188 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 88% | 32,024 psi | 67% | 2228 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 35,259 psi | 74% | 2277 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 29,588 psi | 62% | 2172 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,101 psi | 80% | 2343 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 33,968 psi | 71% | 2306 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,578 psi | 74% | 2326 fps | 95.4% |
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 62 powders for 6 x 52 R Bretschneider loaded with the .243 | 105gr | Geco SOFTPOINT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,559 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 105.0 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, Somchem S365 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 LEVERevolution, Bofors RP3 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 105gr | Geco SOFTPOINT 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.