Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 175gr | Lehigh Defense Controlled Chaos 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 70, Alliant Reloder-16 and Alliant Reloder-26.
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>> | 82% | 53,200 psi | 85% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,578 psi | 88% | 2795 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2831 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 53,635 psi | 86% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,099 psi | 87% | 2887 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,159 psi | 90% | 2864 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,795 psi | 86% | 2815 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,998 psi | 88% | 2923 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,750 psi | 85% | 2913 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,823 psi | 85% | 2933 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,462 psi | 87% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,766 psi | 88% | 2861 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,665 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,144 psi | 90% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,273 psi | 87% | 2913 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,401 psi | 82% | 2913 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,515 psi | 78% | 2851 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,250 psi | 68% | 2766 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,579 psi | 89% | 3045 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,057 psi | 90% | 2881 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2831 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 55,361 psi | 89% | 2858 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,401 psi | 82% | 2913 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 54,853 psi | 88% | 2838 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 55,695 psi | 89% | 2871 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 56,405 psi | 90% | 2940 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 56,115 psi | 90% | 2897 fps | 98.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2900 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,114 psi | 88% | 2867 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,417 psi | 86% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,649 psi | 84% | 2917 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 58% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,259 psi | 87% | 2818 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,229 psi | 85% | 2795 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,043 psi | 90% | 2835 fps | 99.1% |
| IMR 4350 | <<locked>> | 94% | 55,521 psi | 89% | 2867 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,142 psi | 85% | 2812 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 54,346 psi | 87% | 2877 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,188 psi | 90% | 2890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,592 psi | 88% | 2851 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 56,420 psi | 90% | 2831 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,984 psi | 88% | 2785 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,577 psi | 86% | 2795 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,289 psi | 90% | 2861 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 54,128 psi | 87% | 2848 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,960 psi | 69% | 2680 fps | 97.8% |
| Norma 201 | <<locked>> | 82% | 54,795 psi | 88% | 2802 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,463 psi | 89% | 2799 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,056 psi | 87% | 2848 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,231 psi | 90% | 2920 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,520 psi | 87% | 2999 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 56,202 psi | 90% | 2923 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,766 psi | 88% | 2874 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,013 psi | 88% | 2923 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,686 psi | 72% | 2766 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 59% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,782 psi | 89% | 2858 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,724 psi | 89% | 2930 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,666 psi | 89% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,853 psi | 86% | 2910 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,101 psi | 90% | 2992 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,579 psi | 89% | 2805 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,216 psi | 89% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,272 psi | 85% | 2841 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 98% | 53,534 psi | 86% | 2900 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 54,853 psi | 88% | 2838 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,289 psi | 90% | 2861 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,420 psi | 90% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,577 psi | 86% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,128 psi | 87% | 2848 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,345 psi | 86% | 2858 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,621 psi | 88% | 2835 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,637 psi | 89% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,434 psi | 90% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,202 psi | 90% | 2815 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,040 psi | 85% | 2894 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 55,347 psi | 89% | 2733 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,390 psi | 89% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,027 psi | 88% | 2831 fps | 95.8% |
| Somchem S365 | <<locked>> | 96% | 55,347 psi | 89% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,273 psi | 87% | 2877 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 56,159 psi | 90% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,869 psi | 90% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,985 psi | 90% | 2779 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,055 psi | 85% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,071 psi | 88% | 2867 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,864 psi | 80% | 2792 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 54,288 psi | 87% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,099 psi | 87% | 2871 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2927 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,969 psi | 88% | 2986 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,563 psi | 87% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,405 psi | 90% | 2940 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,685 psi | 70% | 2900 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,534 psi | 87% | 2841 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2867 fps | 97.7% |
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 2495 | <<locked>> | 80% | 49,864 psi | 80% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,834 psi | 77% | 2684 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 34,301 psi | 55% | 2497 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 47,210 psi | 76% | 2690 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,810 psi | 57% | 2546 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 80% | 52,750 psi | 85% | 2812 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,802 psi | 72% | 2664 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 45,324 psi | 73% | 2753 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 98% | 49,429 psi | 79% | 2854 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,008 psi | 79% | 2871 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,063 psi | 72% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,312 psi | 77% | 2756 fps | 99.9% |
| Alliant Reloder-16 | 55.2 gr | 80% | 35,143 psi | 56% | 2559 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,537 psi | 63% | 2680 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,904 psi | 72% | 2746 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,933 psi | 72% | 2792 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,340 psi | 44% | 2362 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,056 psi | 56% | 2592 fps | 95.9% |
| Alliant Reloder-26 | 63.9 gr | 84% | 31,140 psi | 50% | 2530 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,504 psi | 84% | 2825 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,077 psi | 71% | 2772 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,382 psi | 73% | 2700 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,933 psi | 72% | 2792 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 40,045 psi | 64% | 2566 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 45,774 psi | 73% | 2707 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 37,695 psi | 60% | 2592 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 43,497 psi | 70% | 2674 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,866 psi | 83% | 2844 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,590 psi | 52% | 2454 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,879 psi | 80% | 2802 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,450 psi | 63% | 2657 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 43% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,995 psi | 82% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,065 psi | 75% | 2697 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,313 psi | 79% | 2723 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 40,712 psi | 65% | 2602 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,495 psi | 67% | 2598 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 34,505 psi | 55% | 2503 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 49,559 psi | 79% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,300 psi | 82% | 2799 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 52,924 psi | 85% | 2785 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,692 psi | 83% | 2736 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,239 psi | 76% | 2694 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,957 psi | 62% | 2549 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 37,144 psi | 60% | 2523 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 35,447 psi | 57% | 2523 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,488 psi | 83% | 2753 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,054 psi | 83% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,688 psi | 76% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 88% | 46,122 psi | 74% | 2746 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 38,624 psi | 62% | 2687 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,607 psi | 57% | 2539 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 47,659 psi | 76% | 2759 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 34,606 psi | 55% | 2526 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 41,553 psi | 67% | 2703 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 44% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,759 psi | 73% | 2687 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,953 psi | 83% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,032 psi | 67% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,520 psi | 57% | 2562 fps | 97.1% |
| ReloadSwiss RS 70 | 60.3 gr | 80% | 34,563 psi | 55% | 2562 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,037 psi | 79% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,598 psi | 68% | 2641 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 49,995 psi | 80% | 2785 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 43,888 psi | 70% | 2730 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,045 psi | 64% | 2566 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,957 psi | 62% | 2549 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,924 psi | 85% | 2785 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,239 psi | 76% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,144 psi | 60% | 2523 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,729 psi | 70% | 2694 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,140 psi | 82% | 2779 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,446 psi | 84% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,251 psi | 71% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,218 psi | 61% | 2493 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,468 psi | 70% | 2723 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 52,054 psi | 83% | 2687 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,047 psi | 69% | 2641 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 51,488 psi | 83% | 2776 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,097 psi | 51% | 2497 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 39,059 psi | 63% | 2598 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 52,968 psi | 85% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,298 psi | 79% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,371 psi | 79% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,046 psi | 66% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,144 psi | 60% | 2546 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 41,002 psi | 66% | 2631 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 47,805 psi | 77% | 2680 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,593 psi | 59% | 2546 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 27,920 psi | 45% | 2382 fps | 95% |
| Vihtavuori N560 | <<locked>> | 98% | 51,300 psi | 82% | 2920 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,376 psi | 58% | 2516 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 37,855 psi | 61% | 2592 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,715 psi | 41% | 2385 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,024 psi | 82% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,063 psi | 71% | 2694 fps | 95.3% |
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 .300 Win. Mag. loaded with the .308 | 175gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,045 fps. Accurate 3100 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 (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 175.0 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 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 175gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.