Load Specifications
Load data in caliber .30-06 Spring. with .308 | 168gr | Barnes TAC-X bullet and 94 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 Power Pro 2000-MR 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.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 51,010 psi | 87% | 2608 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,591 psi | 90% | 2671 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 51,474 psi | 88% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,923 psi | 87% | 2684 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 51,503 psi | 88% | 2703 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,166 psi | 80% | 2703 fps | 98% |
| ADI AR 2206H | <<locked>> | 88% | 50,198 psi | 85% | 2687 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 94% | 51,358 psi | 87% | 2687 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 52,794 psi | 90% | 2697 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 52,808 psi | 90% | 2680 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 50,923 psi | 87% | 2746 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,895 psi | 90% | 2841 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 50,415 psi | 86% | 2703 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 51,068 psi | 87% | 2615 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 51,329 psi | 87% | 2726 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,963 psi | 80% | 2717 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 98% | 50,850 psi | 87% | 2808 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,156 psi | 90% | 2595 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 49,661 psi | 85% | 2694 fps | 98.5% |
| Bofors RP3 | <<locked>> | 94% | 50,488 psi | 86% | 2717 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 51,619 psi | 88% | 2638 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 51,459 psi | 88% | 2720 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 49,835 psi | 85% | 2756 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 82% | 49,995 psi | 85% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 50,937 psi | 87% | 2671 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 52,185 psi | 89% | 2726 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,952 psi | 87% | 2756 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 50,618 psi | 86% | 2700 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,844 psi | 73% | 2598 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,808 psi | 90% | 2779 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 59% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 51,982 psi | 88% | 2703 fps | 99.7% |
| IMR 3031 | <<locked>> | 88% | 49,908 psi | 85% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 50,676 psi | 86% | 2667 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 90% | 51,430 psi | 88% | 2648 fps | 95.9% |
| IMR 4198 | <<locked>> | 82% | 51,648 psi | 88% | 2582 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,237 psi | 77% | 2654 fps | 97.7% |
| IMR 4895 | <<locked>> | 92% | 52,591 psi | 90% | 2756 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 52,794 psi | 90% | 2697 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 52,721 psi | 90% | 2684 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 52,547 psi | 89% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 50,502 psi | 86% | 2625 fps | 99.3% |
| Lovex S062 | <<locked>> | 92% | 50,009 psi | 85% | 2667 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,330 psi | 89% | 2700 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,676 psi | 85% | 2677 fps | 95.9% |
| Norma 201 | <<locked>> | 90% | 51,938 psi | 88% | 2684 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 52,591 psi | 90% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 92% | 50,459 psi | 86% | 2713 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 47,152 psi | 80% | 2700 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 92% | 50,604 psi | 86% | 2733 fps | 99.2% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,630 psi | 79% | 2690 fps | 95.9% |
| Ramshot TAC | <<locked>> | 86% | 49,980 psi | 85% | 2654 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 52,562 psi | 89% | 2730 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 50,560 psi | 86% | 2648 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,925 psi | 59% | 1690 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 52,344 psi | 89% | 2680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 52,823 psi | 90% | 2707 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 51,082 psi | 87% | 2782 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 50,894 psi | 87% | 2818 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,108 psi | 80% | 2726 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,080 psi | 82% | 2746 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 88% | 52,866 psi | 90% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 52,504 psi | 89% | 2684 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 50,343 psi | 86% | 2703 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,330 psi | 89% | 2700 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,547 psi | 89% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 50,009 psi | 85% | 2667 fps | 99.8% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,676 psi | 85% | 2677 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 52,315 psi | 89% | 2654 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 52,272 psi | 89% | 2762 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 52,112 psi | 89% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 51,256 psi | 87% | 2680 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 52,011 psi | 89% | 2710 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 50,952 psi | 87% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 50,792 psi | 86% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,953 psi | 90% | 2657 fps | 96.2% |
| Somchem S321 | <<locked>> | 84% | 50,357 psi | 86% | 2677 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 50,183 psi | 85% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 50,720 psi | 86% | 2677 fps | 99.2% |
| Somchem S355 | <<locked>> | 96% | 51,024 psi | 87% | 2707 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,872 psi | 71% | 2648 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 84% | 51,024 psi | 87% | 2569 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 51,097 psi | 87% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 51,822 psi | 88% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,055 psi | 90% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,779 psi | 90% | 2694 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,777 psi | 85% | 2703 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 86% | 49,763 psi | 85% | 2644 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 51,416 psi | 88% | 2671 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,863 psi | 83% | 2707 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,937 psi | 87% | 2690 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 52,489 psi | 89% | 2740 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,242 psi | 87% | 2762 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 90% | 51,416 psi | 88% | 2717 fps | 99.7% |
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% | 42,177 psi | 72% | 2474 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,050 psi | 78% | 2575 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,156 psi | 58% | 2379 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,046 psi | 70% | 2526 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 32,329 psi | 55% | 2362 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 38,145 psi | 65% | 2539 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 38,856 psi | 66% | 2484 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 35,288 psi | 60% | 2388 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,915 psi | 70% | 2500 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 40,176 psi | 68% | 2500 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,500 psi | 81% | 2690 fps | 99.3% |
| Alliant Power Pro 2000-MR | 47.3 gr | 82% | 37,579 psi | 64% | 2546 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,111 psi | 55% | 2356 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,747 psi | 81% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,679 psi | 59% | 2411 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,870 psi | 66% | 2552 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,866 psi | 58% | 2467 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,966 psi | 85% | 2552 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,855 psi | 64% | 2480 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 31,299 psi | 53% | 2349 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,859 psi | 73% | 2493 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,001 psi | 66% | 2510 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,062 psi | 73% | 2641 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 46,688 psi | 79% | 2598 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,703 psi | 81% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 39,682 psi | 68% | 2510 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 98% | 47,674 psi | 81% | 2703 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 39,131 psi | 67% | 2493 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,330 psi | 57% | 2402 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,983 psi | 60% | 2454 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 44% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,623 psi | 64% | 2448 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 38,087 psi | 65% | 2497 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,563 psi | 59% | 2369 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,254 psi | 82% | 2595 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 48,559 psi | 83% | 2539 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 36,825 psi | 63% | 2493 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,491 psi | 60% | 2441 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 40,915 psi | 70% | 2500 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 45,629 psi | 78% | 2575 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 37,130 psi | 63% | 2461 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,494 psi | 67% | 2431 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 34,200 psi | 58% | 2372 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 43,555 psi | 74% | 2556 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 46,804 psi | 80% | 2631 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 37,782 psi | 64% | 2438 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 38,145 psi | 65% | 2457 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 34,084 psi | 58% | 2402 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 38,740 psi | 66% | 2543 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 33,533 psi | 57% | 2405 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 98% | 43,671 psi | 74% | 2638 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 40,886 psi | 70% | 2493 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,074 psi | 68% | 2516 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,338 psi | 75% | 2543 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,904 psi | 44% | 1512 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,905 psi | 78% | 2582 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,427 psi | 79% | 2605 fps | 95.5% |
| ReloadSwiss RS 52 | 44.7 gr | 80% | 35,839 psi | 61% | 2500 fps | 95.6% |
| ReloadSwiss RS 60 | 45.4 gr | 80% | 29,559 psi | 50% | 2362 fps | 96.6% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,203 psi | 65% | 2556 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 41,901 psi | 71% | 2625 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 41,452 psi | 71% | 2487 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,911 psi | 61% | 2392 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,415 psi | 53% | 2346 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 43,555 psi | 74% | 2556 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,130 psi | 63% | 2461 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,200 psi | 58% | 2372 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 98% | 46,804 psi | 80% | 2631 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,660 psi | 83% | 2598 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,041 psi | 60% | 2448 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,675 psi | 83% | 2589 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,481 psi | 71% | 2516 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,405 psi | 64% | 2451 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,595 psi | 67% | 2411 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,474 psi | 55% | 2277 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,400 psi | 84% | 2605 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 43,961 psi | 75% | 2572 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 39,015 psi | 66% | 2411 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,566 psi | 66% | 2464 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 32,590 psi | 55% | 2356 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 28,384 psi | 48% | 2329 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 44,962 psi | 77% | 2480 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,798 psi | 68% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,998 psi | 60% | 2388 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,984 psi | 61% | 2392 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 28,906 psi | 49% | 2247 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 38,247 psi | 65% | 2497 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 40,901 psi | 70% | 2493 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 34,534 psi | 59% | 2379 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 40,016 psi | 68% | 2549 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,850 psi | 54% | 2323 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,871 psi | 68% | 2530 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 47,921 psi | 82% | 2710 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,492 psi | 62% | 2451 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 107 powders for .30-06 Spring. loaded with the .308 | 168gr | Barnes TAC-X. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,841 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .30-06 Spring. with the .308 | 168gr | Barnes TAC-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-26, Hodgdon H4350, IMR 4350 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.