Load Specifications
Load data in caliber 6 mm BRA with .243 | 105gr | Berger VLD Target bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 53,737 psi | 89% | 2651 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,098 psi | 87% | 2674 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,404 psi | 90% | 2710 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,635 psi | 89% | 2733 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 53,838 psi | 89% | 2746 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,021 psi | 76% | 2700 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 82% | 53,447 psi | 89% | 2598 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,853 psi | 89% | 2621 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 52,779 psi | 88% | 2736 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 96% | 53,505 psi | 89% | 2730 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 53,679 psi | 89% | 2710 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 51,895 psi | 86% | 2690 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 51,634 psi | 86% | 2677 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,243 psi | 88% | 2792 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 51,474 psi | 86% | 2828 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 52,692 psi | 88% | 2749 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,693 psi | 89% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,258 psi | 88% | 2766 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,730 psi | 76% | 2703 fps | 97.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,200 psi | 88% | 2858 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 52,504 psi | 87% | 2595 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 52,199 psi | 87% | 2746 fps | 98.7% |
| Bofors RP3 | <<locked>> | 96% | 52,721 psi | 88% | 2759 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,230 psi | 90% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,215 psi | 90% | 2772 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,214 psi | 87% | 2808 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 84% | 52,605 psi | 87% | 2694 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,635 psi | 89% | 2720 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 50,966 psi | 85% | 2720 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 90% | 53,243 psi | 88% | 2749 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,930 psi | 70% | 2592 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 51,314 psi | 85% | 2769 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 58% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,375 psi | 90% | 2746 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 52,359 psi | 87% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,214 psi | 88% | 2717 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,766 psi | 89% | 2690 fps | 96.2% |
| IMR 4198 | <<locked>> | 84% | 53,925 psi | 90% | 2618 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,866 psi | 88% | 2707 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,077 psi | 73% | 2648 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 51,488 psi | 86% | 2749 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 51,895 psi | 86% | 2690 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 51,851 psi | 86% | 2680 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 51,271 psi | 85% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,069 psi | 88% | 2671 fps | 99.4% |
| Lovex S062 | <<locked>> | 94% | 52,301 psi | 87% | 2710 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2697 fps | 97.2% |
| Norma 201 | <<locked>> | 90% | 51,271 psi | 85% | 2684 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 51,793 psi | 86% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 94% | 52,402 psi | 87% | 2753 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 45,876 psi | 76% | 2690 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 94% | 52,750 psi | 88% | 2779 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 52,112 psi | 87% | 2700 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 51,590 psi | 86% | 2726 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 52,953 psi | 88% | 2694 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 58% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 51,358 psi | 85% | 2674 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 51,851 psi | 86% | 2703 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,417 psi | 89% | 2835 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,055 psi | 88% | 2864 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,614 psi | 76% | 2713 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2736 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 88% | 52,678 psi | 88% | 2674 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 51,590 psi | 86% | 2677 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 52,576 psi | 87% | 2749 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2697 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 51,271 psi | 85% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 52,301 psi | 87% | 2710 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 51,372 psi | 85% | 2648 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,302 psi | 90% | 2723 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 50,995 psi | 85% | 2759 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,244 psi | 90% | 2674 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,925 psi | 90% | 2733 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,404 psi | 90% | 2756 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,693 psi | 89% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 52,982 psi | 88% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,982 psi | 86% | 2654 fps | 95.8% |
| Somchem S321 | <<locked>> | 86% | 53,055 psi | 88% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 52,460 psi | 87% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,403 psi | 89% | 2726 fps | 99.4% |
| Somchem S355 | <<locked>> | 98% | 53,577 psi | 89% | 2753 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,959 psi | 68% | 2644 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 86% | 53,171 psi | 88% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,621 psi | 89% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,041 psi | 90% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 52,199 psi | 87% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 51,459 psi | 85% | 2687 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,646 psi | 81% | 2697 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 88% | 52,286 psi | 87% | 2690 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 53,548 psi | 89% | 2710 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,601 psi | 79% | 2700 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,966 psi | 83% | 2687 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 51,242 psi | 85% | 2733 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 53,824 psi | 89% | 2762 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 41,916 psi | 70% | 2477 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,411 psi | 75% | 2572 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,156 psi | 57% | 2385 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,553 psi | 67% | 2526 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 32,343 psi | 54% | 2369 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 37,144 psi | 62% | 2533 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 50,444 psi | 84% | 2556 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,807 psi | 84% | 2575 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,348 psi | 64% | 2480 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 37,028 psi | 62% | 2434 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 50,546 psi | 84% | 2664 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,350 psi | 67% | 2493 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 80% | 39,595 psi | 66% | 2500 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,644 psi | 77% | 2684 fps | 99.1% |
| Alliant Power Pro 2000-MR | 28.3 gr | 82% | 36,985 psi | 61% | 2539 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,792 psi | 53% | 2356 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,137 psi | 78% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,301 psi | 57% | 2408 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,493 psi | 64% | 2552 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,388 psi | 55% | 2464 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,197 psi | 82% | 2549 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,304 psi | 62% | 2477 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 31,067 psi | 52% | 2349 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,380 psi | 70% | 2490 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,464 psi | 64% | 2510 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,047 psi | 70% | 2631 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 46,151 psi | 77% | 2598 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,847 psi | 78% | 2621 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 39,392 psi | 65% | 2513 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 38,653 psi | 64% | 2490 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,764 psi | 54% | 2392 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,679 psi | 58% | 2457 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,643 psi | 43% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,159 psi | 62% | 2444 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 37,463 psi | 62% | 2493 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,476 psi | 57% | 2372 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 90% | 50,314 psi | 84% | 2638 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 47,776 psi | 79% | 2533 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,516 psi | 82% | 2654 fps | 95.1% |
| IMR 4831 | <<locked>> | 96% | 38,696 psi | 64% | 2546 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 35,085 psi | 58% | 2441 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,350 psi | 67% | 2493 fps | 98.5% |
| Lovex D073.5 | <<locked>> | 80% | 45,237 psi | 75% | 2575 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 36,767 psi | 61% | 2461 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 39,117 psi | 65% | 2428 fps | 97.1% |
| Lovex S062 | <<locked>> | 80% | 33,982 psi | 56% | 2375 fps | 97.1% |
| Lovex S065 | <<locked>> | 94% | 42,917 psi | 71% | 2552 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 37,507 psi | 62% | 2438 fps | 98% |
| Norma 202 | <<locked>> | 80% | 37,724 psi | 63% | 2454 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 33,692 psi | 56% | 2398 fps | 95.5% |
| Norma URP | <<locked>> | 94% | 38,029 psi | 63% | 2539 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 35,462 psi | 59% | 2461 fps | 95.8% |
| Ramshot TAC | <<locked>> | 82% | 42,844 psi | 71% | 2539 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,421 psi | 65% | 2510 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,918 psi | 73% | 2543 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 43% | 1503 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,266 psi | 75% | 2579 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 45,353 psi | 75% | 2595 fps | 95% |
| ReloadSwiss RS 52 | 26.8 gr | 80% | 35,491 psi | 59% | 2500 fps | 95.4% |
| ReloadSwiss RS 60 | 27.2 gr | 80% | 29,414 psi | 49% | 2362 fps | 96.3% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,089 psi | 67% | 2608 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 43,918 psi | 73% | 2677 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,365 psi | 69% | 2490 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,911 psi | 60% | 2395 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 31,299 psi | 52% | 2349 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 42,917 psi | 71% | 2552 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,767 psi | 61% | 2461 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 33,982 psi | 56% | 2375 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,921 psi | 80% | 2595 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,749 psi | 84% | 2674 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,650 psi | 58% | 2448 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,037 psi | 80% | 2585 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,959 psi | 68% | 2513 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,072 psi | 62% | 2451 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,320 psi | 65% | 2408 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,314 psi | 54% | 2280 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 48,370 psi | 80% | 2598 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 43,352 psi | 72% | 2572 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 38,653 psi | 64% | 2411 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,014 psi | 63% | 2464 fps | 96.7% |
| Somchem S355 | <<locked>> | 82% | 32,401 psi | 54% | 2359 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 29,950 psi | 50% | 2382 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 44,599 psi | 74% | 2480 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,407 psi | 65% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,737 psi | 58% | 2388 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,534 psi | 59% | 2392 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 28,645 psi | 48% | 2247 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 94% | 39,842 psi | 66% | 2539 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 40,350 psi | 67% | 2490 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,316 psi | 57% | 2382 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 39,131 psi | 65% | 2543 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,663 psi | 56% | 2375 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,117 psi | 65% | 2526 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,984 psi | 60% | 2448 fps | 96.9% |
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 94 powders for 6 mm BRA loaded with the .243 | 105gr | Berger VLD Target. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,864 fps. Accurate 4350 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for 6 mm BRA with the .243 | 105gr | Berger VLD 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.