Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 171gr | Peregrine VLR-5 bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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 2495 | <<locked>> | 84% | 54,462 psi | 87% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,259 psi | 87% | 2818 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,690 psi | 80% | 2838 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 54,853 psi | 88% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,825 psi | 90% | 2953 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,621 psi | 88% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,753 psi | 89% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,664 psi | 86% | 2940 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,853 psi | 88% | 3005 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,011 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,113 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,171 psi | 85% | 2959 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,447 psi | 87% | 2986 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2982 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,792 psi | 80% | 2920 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,717 psi | 75% | 2858 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,828 psi | 65% | 2769 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 3051 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,679 psi | 88% | 2900 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 53,374 psi | 86% | 2867 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,792 psi | 80% | 2920 fps | 96.9% |
| Bofors RP7 | <<locked>> | 90% | 53,171 psi | 85% | 2848 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 86% | 54,070 psi | 87% | 2884 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 56,014 psi | 90% | 2972 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 56,420 psi | 90% | 2940 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,216 psi | 89% | 2887 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,432 psi | 86% | 2884 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,637 psi | 89% | 2930 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,882 psi | 88% | 2989 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 58% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,317 psi | 89% | 2877 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,404 psi | 87% | 2848 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,665 psi | 88% | 2858 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,679 psi | 86% | 2831 fps | 98.7% |
| IMR 4350 | <<locked>> | 94% | 54,085 psi | 87% | 2884 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,969 psi | 88% | 2881 fps | 98.8% |
| IMR 4831 | <<locked>> | 98% | 53,592 psi | 86% | 2904 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,520 psi | 87% | 2904 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,504 psi | 84% | 2959 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 82% | 54,737 psi | 88% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,664 psi | 86% | 2805 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,274 psi | 89% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,752 psi | 88% | 2874 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 56,101 psi | 90% | 2917 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,002 psi | 66% | 2680 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 53,142 psi | 85% | 2822 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,867 psi | 86% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,057 psi | 90% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,868 psi | 88% | 2936 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 52,779 psi | 85% | 3005 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 54,766 psi | 88% | 2940 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,040 psi | 85% | 2887 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,289 psi | 90% | 3031 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 53,563 psi | 86% | 2940 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,791 psi | 78% | 2881 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 59% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,085 psi | 87% | 2867 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,940 psi | 86% | 2943 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,012 psi | 87% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,738 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,607 psi | 88% | 3009 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 53,925 psi | 86% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,476 psi | 86% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,463 psi | 89% | 2910 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,288 psi | 89% | 2966 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 53,171 psi | 85% | 2848 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,752 psi | 88% | 2874 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,737 psi | 88% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,274 psi | 89% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,101 psi | 90% | 2917 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,245 psi | 89% | 2927 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,854 psi | 90% | 2884 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,069 psi | 85% | 2848 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,273 psi | 87% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,216 psi | 89% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,694 psi | 88% | 2828 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,795 psi | 88% | 2959 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 53,853 psi | 86% | 2753 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,622 psi | 89% | 2871 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,606 psi | 86% | 2861 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,447 psi | 86% | 2940 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,130 psi | 90% | 2943 fps | 98.7% |
| Unknown powder | <<locked>> | 92% | 55,564 psi | 89% | 2946 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 84% | 54,346 psi | 87% | 2736 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,215 psi | 87% | 2785 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,693 psi | 86% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,259 psi | 89% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,912 psi | 90% | 2913 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,572 psi | 75% | 2772 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 84% | 53,534 psi | 86% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,275 psi | 90% | 2963 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2940 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,200 psi | 85% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,014 psi | 90% | 2972 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,018 psi | 67% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,723 psi | 88% | 2910 fps | 97.6% |
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 2495 | <<locked>> | 80% | 47,674 psi | 76% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,727 psi | 67% | 2595 fps | 95.4% |
| Accurate 3100 | <<locked>> | 90% | 34,867 psi | 56% | 2546 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,208 psi | 72% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,055 psi | 55% | 2543 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 51,271 psi | 82% | 2825 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,511 psi | 70% | 2677 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 46,876 psi | 75% | 2818 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,645 psi | 76% | 2884 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,569 psi | 70% | 2697 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,789 psi | 75% | 2769 fps | 99.7% |
| Alliant Reloder-16 | 55.8 gr | 80% | 33,866 psi | 54% | 2559 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,189 psi | 61% | 2687 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,468 psi | 70% | 2753 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,482 psi | 70% | 2799 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,717 psi | 44% | 2411 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,605 psi | 54% | 2585 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,981 psi | 51% | 2589 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,908 psi | 82% | 2838 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,598 psi | 70% | 2703 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 43,482 psi | 70% | 2799 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 41,220 psi | 66% | 2625 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 44,193 psi | 71% | 2713 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 80% | 39,610 psi | 64% | 2671 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 43,845 psi | 70% | 2713 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 51,851 psi | 83% | 2838 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,212 psi | 50% | 2454 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,440 psi | 73% | 2766 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,959 psi | 66% | 2726 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 43% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,934 psi | 74% | 2720 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,819 psi | 77% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,670 psi | 68% | 2651 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,959 psi | 67% | 2618 fps | 96.3% |
| IMR 4350 | <<locked>> | 86% | 41,887 psi | 67% | 2661 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,277 psi | 65% | 2608 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 29,747 psi | 48% | 2415 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 48,008 psi | 77% | 2799 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 49,124 psi | 79% | 2897 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 51,097 psi | 82% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,459 psi | 81% | 2753 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,701 psi | 73% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,521 psi | 60% | 2552 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 38,218 psi | 61% | 2585 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 35,955 psi | 58% | 2572 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,893 psi | 80% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,531 psi | 81% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,122 psi | 74% | 2756 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,454 psi | 71% | 2749 fps | 95% |
| Norma MRP | <<locked>> | 92% | 39,769 psi | 64% | 2749 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,142 psi | 55% | 2543 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,267 psi | 74% | 2776 fps | 99.8% |
| Ramshot Grand | <<locked>> | 96% | 48,283 psi | 77% | 2890 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 82% | 35,563 psi | 57% | 2585 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 96% | 41,582 psi | 67% | 2736 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 44% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,454 psi | 71% | 2700 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,227 psi | 81% | 2884 fps | 99.9% |
| ReloadSwiss RS 60 | 60.1 gr | 80% | 40,654 psi | 65% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,866 psi | 54% | 2559 fps | 96.3% |
| ReloadSwiss RS 70 | 61 gr | 80% | 33,330 psi | 53% | 2562 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 47,456 psi | 76% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,915 psi | 66% | 2648 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,559 psi | 78% | 2795 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 45,252 psi | 73% | 2792 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 41,220 psi | 66% | 2625 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,521 psi | 60% | 2552 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,097 psi | 82% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,701 psi | 73% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,218 psi | 61% | 2585 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,206 psi | 68% | 2703 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,909 psi | 83% | 2825 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,647 psi | 80% | 2795 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,140 psi | 82% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,989 psi | 69% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,262 psi | 63% | 2549 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,831 psi | 72% | 2785 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,604 psi | 81% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,793 psi | 83% | 2815 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,495 psi | 67% | 2651 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,719 psi | 49% | 2497 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 40,030 psi | 64% | 2654 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 37,130 psi | 60% | 2605 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 80% | 48,225 psi | 77% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,718 psi | 77% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,268 psi | 76% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,462 psi | 57% | 2497 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 37,043 psi | 59% | 2575 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 98% | 43,584 psi | 70% | 2713 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,036 psi | 75% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,623 psi | 60% | 2618 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 84% | 30,298 psi | 49% | 2484 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,983 psi | 56% | 2520 fps | 98.9% |
| Winchester 760 | <<locked>> | 80% | 39,610 psi | 64% | 2671 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,107 psi | 42% | 2431 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,743 psi | 70% | 2723 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 108 powders for .300 Win. Mag. loaded with the .308 | 171gr | Peregrine VLR-5. Alliant Reloder-26 delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,051 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 171.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .300 Win. Mag. with the .308 | 171gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H4831 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.