Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 100gr | Norma SSP bullet and 57 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 Lovex D073.6.
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% | 42,380 psi | 89% | 2438 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 40,582 psi | 85% | 2438 fps | 98.9% |
| Accurate 2495 | <<locked>> | 92% | 41,350 psi | 86% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 40,712 psi | 85% | 2477 fps | 98.7% |
| Accurate 4064 | <<locked>> | 94% | 41,002 psi | 86% | 2503 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 41,539 psi | 87% | 2480 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 41,524 psi | 87% | 2457 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 88% | 41,959 psi | 88% | 2507 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 41,307 psi | 86% | 2526 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 40,567 psi | 85% | 2490 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 42,946 psi | 90% | 2457 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 42,902 psi | 90% | 2543 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 41,031 psi | 86% | 2405 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,640 psi | 87% | 2513 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 82% | 41,249 psi | 86% | 2467 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 82% | 41,974 psi | 88% | 2484 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 88% | 41,742 psi | 87% | 2493 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 42,366 psi | 89% | 2552 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,663 psi | 70% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 43,250 psi | 90% | 2500 fps | 96.9% |
| IMR 3031 | <<locked>> | 90% | 42,612 psi | 89% | 2546 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 42,627 psi | 89% | 2536 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 86% | 41,524 psi | 87% | 2457 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 84% | 43,192 psi | 90% | 2484 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 90% | 41,945 psi | 88% | 2510 fps | 98.9% |
| Lovex S060 | <<locked>> | 88% | 42,641 psi | 89% | 2428 fps | 96.1% |
| Lovex S062 | <<locked>> | 92% | 41,017 psi | 86% | 2464 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 43,134 psi | 90% | 2487 fps | 97.7% |
| Norma 202 | <<locked>> | 90% | 42,960 psi | 90% | 2500 fps | 99.4% |
| Norma 203B | <<locked>> | 92% | 40,886 psi | 85% | 2493 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 43,033 psi | 90% | 2516 fps | 96.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 42,583 psi | 89% | 2451 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,895 psi | 71% | 1617 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 41,060 psi | 86% | 2448 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,133 psi | 86% | 2572 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 42,192 psi | 88% | 2451 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 90% | 41,118 psi | 86% | 2441 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 98% | 42,815 psi | 89% | 2533 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 41,945 psi | 88% | 2510 fps | 98.9% |
| Shooters World Precision | <<locked>> | 92% | 41,017 psi | 86% | 2464 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 42,366 psi | 89% | 2539 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 42,830 psi | 89% | 2503 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 43,105 psi | 90% | 2418 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 41,727 psi | 87% | 2411 fps | 99.7% |
| Somchem S321 | <<locked>> | 84% | 41,640 psi | 87% | 2480 fps | 97.6% |
| Somchem S335 | <<locked>> | 88% | 42,148 psi | 88% | 2421 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 41,176 psi | 86% | 2487 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 84% | 42,975 psi | 90% | 2408 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,873 psi | 90% | 2421 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 41,626 psi | 87% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 40,901 psi | 85% | 2444 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 98% | 42,496 psi | 89% | 2484 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 41,234 psi | 86% | 2448 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 92% | 42,134 psi | 88% | 2480 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,640 psi | 87% | 2457 fps | 95.9% |
| Winchester 748 | <<locked>> | 88% | 42,293 psi | 88% | 2530 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 41,669 psi | 87% | 2500 fps | 96.6% |
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% | 35,056 psi | 73% | 2306 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 37,840 psi | 79% | 2385 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 27,586 psi | 58% | 2201 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 33,272 psi | 70% | 2329 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 26,136 psi | 55% | 2175 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 86% | 39,233 psi | 82% | 2434 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,200 psi | 71% | 2306 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 32,460 psi | 68% | 2329 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,870 psi | 81% | 2477 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 35,679 psi | 75% | 2392 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,987 psi | 84% | 2408 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 34,998 psi | 73% | 2392 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,695 psi | 77% | 2320 fps | 96.5% |
| Hodgdon BL-C2 | 24.1 gr | 82% | 33,779 psi | 71% | 2356 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 38,841 psi | 81% | 2421 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 80% | 39,175 psi | 82% | 2434 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 84% | 36,825 psi | 77% | 2395 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 37,420 psi | 78% | 2451 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,729 psi | 52% | 1404 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,145 psi | 80% | 2405 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 30,719 psi | 64% | 2303 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 40,248 psi | 84% | 2493 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 34,200 psi | 71% | 2306 fps | 95% |
| Lovex D073.5 | <<locked>> | 80% | 37,608 psi | 79% | 2382 fps | 97.2% |
| Lovex D073.6 | 22.8 gr | 80% | 30,008 psi | 63% | 2264 fps | 95.6% |
| Lovex S060 | <<locked>> | 86% | 40,364 psi | 84% | 2385 fps | 95.5% |
| Lovex S062 | <<locked>> | 86% | 34,142 psi | 71% | 2326 fps | 95.2% |
| Norma 201 | <<locked>> | 82% | 33,910 psi | 71% | 2303 fps | 95% |
| Norma 202 | <<locked>> | 80% | 31,328 psi | 65% | 2267 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 38,609 psi | 81% | 2451 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 40,219 psi | 84% | 2464 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,885 psi | 83% | 2402 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,063 psi | 52% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,319 psi | 80% | 2395 fps | 97.8% |
| ReloadSwiss RS 60 | 26.1 gr | 90% | 34,084 psi | 71% | 2411 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 35,186 psi | 74% | 2313 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 34,214 psi | 71% | 2303 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 94% | 37,492 psi | 78% | 2434 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,008 psi | 63% | 2264 fps | 95.6% |
| Shooters World Precision | <<locked>> | 86% | 34,142 psi | 71% | 2326 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,624 psi | 83% | 2487 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 40,059 psi | 84% | 2451 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,634 psi | 70% | 2238 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,224 psi | 57% | 2110 fps | 96.4% |
| Somchem S321 | <<locked>> | 80% | 36,332 psi | 76% | 2375 fps | 96.2% |
| Somchem S335 | <<locked>> | 80% | 32,909 psi | 69% | 2241 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 36,680 psi | 77% | 2398 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 38,232 psi | 80% | 2326 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,475 psi | 70% | 2251 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 28,485 psi | 60% | 2211 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 29,863 psi | 62% | 2215 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 90% | 32,735 psi | 68% | 2297 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 36,216 psi | 76% | 2349 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 28,572 psi | 60% | 2198 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,972 psi | 81% | 2408 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 32,489 psi | 68% | 2326 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 36,376 psi | 76% | 2398 fps | 95% |
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 57 powders for 6 x 52 R Bretschneider loaded with the .243 | 100gr | Norma SSP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,572 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 57 of the 57 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 1:10.5 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, Lovex D073.6 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 100gr | Norma SSP 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.