Load Specifications
Load data in caliber 6 x 52 R BB2 with .243 | 108gr | Berger BT Target bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and SNPE Vectan SP 11.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 42,351 psi | 88% | 2444 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 42,351 psi | 88% | 2477 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 40,596 psi | 85% | 2507 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 41,147 psi | 86% | 2444 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 88% | 42,337 psi | 88% | 2448 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 43,279 psi | 90% | 2457 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 82% | 42,685 psi | 89% | 2457 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,612 psi | 89% | 2569 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 41,205 psi | 86% | 2464 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,119 psi | 88% | 2484 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,104 psi | 86% | 2516 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,944 psi | 86% | 2546 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,844 psi | 90% | 2493 fps | 97.1% |
| Bofors RP3 | <<locked>> | 88% | 41,060 psi | 86% | 2474 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,669 psi | 87% | 2477 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 88% | 42,380 psi | 89% | 2477 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 82% | 41,495 psi | 87% | 2457 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,467 psi | 89% | 2507 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 42,786 psi | 89% | 2530 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,795 psi | 73% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,873 psi | 90% | 2464 fps | 98.5% |
| IMR 3031 | <<locked>> | 82% | 40,770 psi | 85% | 2464 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,814 psi | 87% | 2434 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 41,698 psi | 87% | 2510 fps | 96.8% |
| IMR 4895 | <<locked>> | 86% | 43,134 psi | 90% | 2513 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 82% | 43,279 psi | 90% | 2457 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 84% | 42,351 psi | 88% | 2474 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 41,785 psi | 87% | 2392 fps | 97.9% |
| Lovex S062 | <<locked>> | 86% | 41,220 psi | 86% | 2434 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 43,134 psi | 90% | 2454 fps | 99.1% |
| Norma 202 | <<locked>> | 84% | 43,105 psi | 90% | 2464 fps | 100% |
| Norma 203B | <<locked>> | 86% | 41,437 psi | 87% | 2474 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 40,727 psi | 85% | 2500 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 86% | 40,828 psi | 85% | 2480 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,612 psi | 89% | 2480 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 73% | 1624 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 40,915 psi | 85% | 2523 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,133 psi | 86% | 2559 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 40,886 psi | 85% | 2405 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 90% | 40,944 psi | 86% | 2464 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 42,351 psi | 88% | 2474 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 41,220 psi | 86% | 2434 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,322 psi | 88% | 2516 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,424 psi | 89% | 2467 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,047 psi | 88% | 2369 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,814 psi | 87% | 2375 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,742 psi | 87% | 2375 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,147 psi | 86% | 2431 fps | 97.6% |
| Somchem S355 | <<locked>> | 90% | 41,959 psi | 88% | 2470 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,191 psi | 86% | 2552 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 42,148 psi | 88% | 2369 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,438 psi | 89% | 2438 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,017 psi | 86% | 2405 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,743 psi | 89% | 2454 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 96% | 43,221 psi | 90% | 2507 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 41,771 psi | 87% | 2434 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 42,090 psi | 88% | 2507 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,263 psi | 86% | 2448 fps | 98.2% |
| Winchester 748 | <<locked>> | 82% | 42,380 psi | 89% | 2493 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,800 psi | 87% | 2470 fps | 98.4% |
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 2495 | <<locked>> | 80% | 34,867 psi | 73% | 2313 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,982 psi | 69% | 2297 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 37,550 psi | 78% | 2448 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 38,754 psi | 81% | 2398 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 35,259 psi | 74% | 2306 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,727 psi | 85% | 2411 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,900 psi | 83% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,376 psi | 78% | 2457 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,111 psi | 67% | 2277 fps | 96.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,679 psi | 72% | 2329 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,711 psi | 81% | 2464 fps | 95.7% |
| Alliant Reloder-17 | 28.1 gr | 86% | 33,852 psi | 71% | 2385 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,623 psi | 79% | 2392 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 31,473 psi | 66% | 2274 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,783 psi | 81% | 2425 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 39,407 psi | 82% | 2421 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,030 psi | 82% | 2408 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,156 psi | 69% | 2316 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,867 psi | 73% | 2372 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 54% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,507 psi | 78% | 2362 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 38,159 psi | 80% | 2415 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,693 psi | 72% | 2290 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 36,753 psi | 77% | 2411 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,447 psi | 74% | 2359 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 40,727 psi | 85% | 2411 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 37,275 psi | 78% | 2382 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,334 psi | 82% | 2346 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 34,229 psi | 72% | 2293 fps | 97.2% |
| Norma 201 | <<locked>> | 80% | 38,174 psi | 80% | 2362 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 38,058 psi | 80% | 2372 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 34,055 psi | 71% | 2320 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 38,290 psi | 80% | 2451 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 33,373 psi | 70% | 2323 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,697 psi | 83% | 2425 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 55% | 1453 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,650 psi | 74% | 2411 fps | 95.6% |
| ReloadSwiss RS 60 | 26.1 gr | 80% | 29,573 psi | 62% | 2283 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 80% | 36,143 psi | 76% | 2313 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,372 psi | 66% | 2264 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,275 psi | 78% | 2382 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,229 psi | 72% | 2293 fps | 97.2% |
| SNPE Vectan SP 11 | 27 gr | 84% | 34,983 psi | 73% | 2365 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,231 psi | 78% | 2365 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,436 psi | 82% | 2323 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,430 psi | 68% | 2198 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 39,305 psi | 82% | 2333 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,334 psi | 80% | 2379 fps | 96.9% |
| Somchem S355 | <<locked>> | 80% | 30,806 psi | 64% | 2234 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 28,282 psi | 59% | 2247 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 39,552 psi | 83% | 2326 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,896 psi | 73% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,839 psi | 75% | 2310 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 28,935 psi | 60% | 2175 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 37,811 psi | 79% | 2405 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,432 psi | 72% | 2297 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 39,595 psi | 83% | 2461 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,778 psi | 66% | 2244 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 39,784 psi | 83% | 2448 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,230 psi | 76% | 2362 fps | 97.1% |
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 60 powders for 6 x 52 R BB2 loaded with the .243 | 108gr | Berger BT Target. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,569 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,569 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 108.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 6 x 52 R BB2 with the .243 | 108gr | Berger BT Target 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.