Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 100gr | Hornady InterLock RN bullet and 59 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% | 41,133 psi | 86% | 2428 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 41,698 psi | 87% | 2464 fps | 99.2% |
| Accurate 2495 | <<locked>> | 92% | 42,511 psi | 89% | 2510 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 42,264 psi | 88% | 2513 fps | 99% |
| Accurate 4064 | <<locked>> | 94% | 42,134 psi | 88% | 2530 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 42,496 psi | 89% | 2510 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 42,525 psi | 89% | 2484 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 88% | 43,236 psi | 90% | 2533 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 42,540 psi | 89% | 2559 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,003 psi | 88% | 2526 fps | 97.3% |
| Alliant Reloder-15 | <<locked>> | 92% | 43,178 psi | 90% | 2543 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 98% | 42,192 psi | 88% | 2592 fps | 96.5% |
| Bofors RP3 | <<locked>> | 94% | 41,408 psi | 87% | 2526 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,076 psi | 88% | 2434 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 88% | 42,569 psi | 89% | 2539 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 82% | 42,424 psi | 89% | 2497 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 82% | 43,018 psi | 90% | 2513 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 88% | 42,786 psi | 89% | 2523 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,857 psi | 85% | 2533 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,620 psi | 70% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,350 psi | 86% | 2477 fps | 96.6% |
| IMR 3031 | <<locked>> | 88% | 41,292 psi | 86% | 2533 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 43,047 psi | 90% | 2493 fps | 95.9% |
| IMR 4895 | <<locked>> | 90% | 41,249 psi | 86% | 2520 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 86% | 42,525 psi | 89% | 2484 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 82% | 41,321 psi | 86% | 2461 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 88% | 40,582 psi | 85% | 2493 fps | 98.8% |
| Lovex S060 | <<locked>> | 86% | 41,292 psi | 86% | 2415 fps | 96% |
| Lovex S062 | <<locked>> | 92% | 42,032 psi | 88% | 2493 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 41,800 psi | 87% | 2474 fps | 97.6% |
| Norma 202 | <<locked>> | 88% | 41,597 psi | 87% | 2487 fps | 99.3% |
| Norma 203B | <<locked>> | 92% | 42,351 psi | 88% | 2533 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 92% | 42,279 psi | 88% | 2543 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 86% | 41,104 psi | 86% | 2493 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,866 psi | 71% | 1627 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 42,134 psi | 88% | 2477 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,206 psi | 88% | 2608 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 42,888 psi | 90% | 2474 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 90% | 42,119 psi | 88% | 2470 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 96% | 41,307 psi | 86% | 2516 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 40,582 psi | 85% | 2493 fps | 98.8% |
| Shooters World Precision | <<locked>> | 92% | 42,032 psi | 88% | 2493 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 40,901 psi | 85% | 2477 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 41,234 psi | 86% | 2398 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 43,221 psi | 90% | 2444 fps | 99.9% |
| Somchem S321 | <<locked>> | 84% | 42,540 psi | 89% | 2507 fps | 98% |
| Somchem S335 | <<locked>> | 88% | 43,149 psi | 90% | 2448 fps | 99.8% |
| Somchem S341 | <<locked>> | 88% | 42,424 psi | 89% | 2493 fps | 96.1% |
| Somchem S355 | <<locked>> | 96% | 42,598 psi | 89% | 2523 fps | 97% |
| Vihtavuori N130 | <<locked>> | 82% | 41,727 psi | 87% | 2398 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 41,075 psi | 86% | 2402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 42,859 psi | 90% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 41,916 psi | 88% | 2470 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 96% | 40,872 psi | 85% | 2467 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 86% | 42,264 psi | 88% | 2477 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 92% | 42,989 psi | 90% | 2507 fps | 99.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,931 psi | 90% | 2497 fps | 96.6% |
| Winchester 748 | <<locked>> | 86% | 40,886 psi | 85% | 2513 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 42,989 psi | 90% | 2536 fps | 97.1% |
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% | 36,260 psi | 76% | 2339 fps | 99.8% |
| Accurate 2460 | <<locked>> | 80% | 38,957 psi | 81% | 2415 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 28,660 psi | 60% | 2234 fps | 98.9% |
| Accurate 2520 | <<locked>> | 80% | 34,345 psi | 72% | 2359 fps | 97.3% |
| Accurate 4064 | <<locked>> | 80% | 27,151 psi | 57% | 2208 fps | 96% |
| ADI AR 2206H | <<locked>> | 86% | 40,219 psi | 84% | 2467 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,201 psi | 74% | 2339 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 33,170 psi | 69% | 2352 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,132 psi | 84% | 2513 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,621 psi | 72% | 2379 fps | 95.1% |
| Alliant Reloder-15 | <<locked>> | 90% | 40,350 psi | 84% | 2490 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 39,494 psi | 83% | 2536 fps | 95.5% |
| Bofors RP3 | 25.2 gr | 88% | 33,910 psi | 71% | 2375 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,289 psi | 78% | 2343 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,445 psi | 68% | 2336 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 39,566 psi | 83% | 2448 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 40,219 psi | 84% | 2461 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 84% | 37,840 psi | 79% | 2428 fps | 95.7% |
| Hodgdon LEVERevolution | 25.4 gr | 86% | 35,853 psi | 75% | 2428 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,918 psi | 52% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,535 psi | 76% | 2382 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 31,792 psi | 66% | 2339 fps | 98.8% |
| IMR 4064 | <<locked>> | 90% | 40,234 psi | 84% | 2441 fps | 95.1% |
| IMR 4895 | <<locked>> | 88% | 38,580 psi | 81% | 2467 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 35,201 psi | 74% | 2339 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 80% | 38,638 psi | 81% | 2411 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 30,676 psi | 64% | 2287 fps | 96.1% |
| Lovex S060 | <<locked>> | 84% | 38,667 psi | 81% | 2365 fps | 95.2% |
| Lovex S062 | <<locked>> | 86% | 35,099 psi | 73% | 2356 fps | 95.7% |
| Norma 201 | <<locked>> | 82% | 34,519 psi | 72% | 2326 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 32,343 psi | 68% | 2300 fps | 97.4% |
| Norma 203B | <<locked>> | 90% | 39,552 psi | 83% | 2477 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 90% | 39,218 psi | 82% | 2484 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,464 psi | 80% | 2441 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,222 psi | 53% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,363 psi | 82% | 2425 fps | 98.2% |
| ReloadSwiss RS 60 | 26.1 gr | 88% | 32,532 psi | 68% | 2385 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 35,940 psi | 75% | 2339 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 34,838 psi | 73% | 2326 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 92% | 36,303 psi | 76% | 2418 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,676 psi | 64% | 2287 fps | 96.1% |
| Shooters World Precision | <<locked>> | 86% | 35,099 psi | 73% | 2356 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 38,319 psi | 80% | 2428 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,287 psi | 72% | 2264 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,775 psi | 58% | 2133 fps | 96.8% |
| Somchem S321 | <<locked>> | 80% | 37,289 psi | 78% | 2405 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 33,866 psi | 71% | 2274 fps | 98.5% |
| Somchem S341 | <<locked>> | 86% | 39,653 psi | 83% | 2444 fps | 95.4% |
| Somchem S355 | <<locked>> | 92% | 37,623 psi | 79% | 2431 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 38,986 psi | 81% | 2349 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,185 psi | 71% | 2274 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 29,211 psi | 61% | 2238 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 80% | 30,458 psi | 64% | 2238 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 90% | 33,605 psi | 70% | 2323 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 34,780 psi | 73% | 2329 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 29,109 psi | 61% | 2218 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 40,277 psi | 84% | 2448 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 33,373 psi | 70% | 2356 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 86% | 37,623 psi | 79% | 2434 fps | 95.6% |
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 59 powders for 6 x 52 R Bretschneider loaded with the .243 | 100gr | Hornady InterLock RN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,608 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 59 of the 59 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 1:12.0 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 LEVERevolution, Bofors RP3 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 100gr | Hornady InterLock RN 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.