Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Norma Kalahari bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Ramshot Hunter.
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>> | 86% | 56,115 psi | 90% | 2999 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,057 psi | 90% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,912 psi | 90% | 3005 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,224 psi | 76% | 2956 fps | 97.4% |
| Accurate 4064 | <<locked>> | 88% | 56,405 psi | 90% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,968 psi | 85% | 3084 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 55,782 psi | 89% | 3077 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,664 psi | 86% | 3028 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,607 psi | 88% | 3120 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,781 psi | 88% | 3028 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,159 psi | 90% | 3002 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,144 psi | 90% | 3212 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 53,925 psi | 86% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,331 psi | 87% | 3074 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,041 psi | 87% | 3150 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,303 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 3104 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,483 psi | 71% | 2982 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,517 psi | 81% | 3173 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,985 psi | 90% | 3097 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 54,737 psi | 88% | 3068 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,520 psi | 87% | 3038 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,028 psi | 90% | 3005 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,433 psi | 87% | 3054 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,405 psi | 89% | 3081 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 90% | 53,345 psi | 86% | 3100 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 53,925 psi | 86% | 3064 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,434 psi | 90% | 3091 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,983 psi | 87% | 3071 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,069 psi | 85% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,130 psi | 90% | 3179 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1919 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,127 psi | 85% | 3022 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,477 psi | 89% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,811 psi | 89% | 3054 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,027 psi | 88% | 3025 fps | 98% |
| IMR 4350 | <<locked>> | 96% | 55,013 psi | 88% | 3064 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,130 psi | 90% | 3068 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 3091 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 55,724 psi | 89% | 3107 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,781 psi | 88% | 3028 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,057 psi | 90% | 3054 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,129 psi | 88% | 3005 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,434 psi | 90% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,927 psi | 90% | 3064 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 53,751 psi | 86% | 3048 fps | 98% |
| Norma 201 | <<locked>> | 84% | 54,665 psi | 88% | 3025 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,172 psi | 88% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,592 psi | 86% | 3058 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 55,782 psi | 89% | 3117 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 49,937 psi | 80% | 3120 fps | 97% |
| Norma URP | <<locked>> | 96% | 55,434 psi | 89% | 3130 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 54,375 psi | 87% | 3087 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 54,273 psi | 87% | 3123 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 54,868 psi | 88% | 3045 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,737 psi | 88% | 3064 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 58% | 1965 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,492 psi | 89% | 3061 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,143 psi | 88% | 3146 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,781 psi | 88% | 3179 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,939 psi | 85% | 3110 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,724 psi | 89% | 3199 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 55,419 psi | 89% | 3002 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,158 psi | 88% | 3022 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,810 psi | 88% | 3064 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 3084 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 92% | 54,520 psi | 87% | 3038 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,927 psi | 90% | 3064 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,057 psi | 90% | 3054 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,434 psi | 90% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,751 psi | 86% | 3048 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,765 psi | 85% | 3068 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,592 psi | 86% | 3022 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,447 psi | 87% | 3048 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,840 psi | 90% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,098 psi | 85% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,144 psi | 90% | 3015 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,996 psi | 83% | 3081 fps | 96% |
| Somchem S335 | <<locked>> | 84% | 55,347 psi | 89% | 2956 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,243 psi | 85% | 3012 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 54,766 psi | 88% | 3058 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,099 psi | 87% | 3133 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,374 psi | 86% | 3064 fps | 97.2% |
| Unknown powder | <<locked>> | 94% | 56,304 psi | 90% | 3136 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 86% | 55,535 psi | 89% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,390 psi | 89% | 2989 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,114 psi | 88% | 2992 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,289 psi | 90% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,374 psi | 86% | 3051 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 86% | 54,737 psi | 88% | 3015 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,592 psi | 86% | 3097 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,472 psi | 79% | 3064 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,215 psi | 87% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,345 psi | 86% | 3100 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,001 psi | 64% | 3005 fps | 99.8% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 3091 fps | 96.5% |
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% | 46,209 psi | 74% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,243 psi | 84% | 2995 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,759 psi | 73% | 2828 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 41,031 psi | 66% | 2831 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,729 psi | 70% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 34,998 psi | 56% | 2717 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,298 psi | 79% | 2966 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 41,756 psi | 67% | 2802 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 51,111 psi | 82% | 3054 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,343 psi | 82% | 2972 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,620 psi | 84% | 2953 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,339 psi | 73% | 3009 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,872 psi | 67% | 2828 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,918 psi | 72% | 2900 fps | 98.9% |
| Alliant Reloder-16 | 59.1 gr | 82% | 34,664 psi | 56% | 2726 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,463 psi | 58% | 2802 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 50,241 psi | 81% | 3045 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,385 psi | 49% | 2628 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 37,869 psi | 61% | 2890 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,863 psi | 78% | 2972 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 41,843 psi | 67% | 2835 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 45,078 psi | 72% | 2861 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,808 psi | 85% | 2956 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,778 psi | 81% | 2995 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,554 psi | 68% | 2841 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 84% | 43,352 psi | 70% | 2910 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 47,601 psi | 76% | 2949 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,821 psi | 80% | 2979 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,023 psi | 48% | 2562 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,482 psi | 70% | 2897 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 88% | 45,179 psi | 72% | 2972 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 43% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,222 psi | 71% | 2858 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 45,745 psi | 73% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,046 psi | 66% | 2782 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,178 psi | 69% | 2799 fps | 95.2% |
| IMR 4350 | <<locked>> | 90% | 45,614 psi | 73% | 2894 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,947 psi | 70% | 2841 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 34,751 psi | 56% | 2694 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,035 psi | 74% | 2933 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 51,343 psi | 82% | 2972 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,081 psi | 79% | 2946 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,762 psi | 78% | 2897 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,106 psi | 71% | 2844 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 38,566 psi | 62% | 2726 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 41,698 psi | 67% | 2815 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 48,211 psi | 77% | 2913 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,646 psi | 78% | 2917 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,280 psi | 71% | 2887 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 52,170 psi | 84% | 3054 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 43,482 psi | 70% | 2986 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 35,041 psi | 56% | 2717 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,092 psi | 71% | 2900 fps | 99% |
| Ramshot Hunter | 67.2 gr | 88% | 41,582 psi | 67% | 2877 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,343 psi | 82% | 2982 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,155 psi | 82% | 3002 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 43% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,786 psi | 69% | 2822 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,921 psi | 77% | 3018 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,827 psi | 62% | 2874 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,708 psi | 56% | 2730 fps | 95.1% |
| ReloadSwiss RS 70 | 66.2 gr | 84% | 36,724 psi | 59% | 2795 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,214 psi | 84% | 2953 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,963 psi | 74% | 2864 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 39,334 psi | 63% | 2776 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 48,994 psi | 79% | 3022 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 45,078 psi | 72% | 2861 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,566 psi | 62% | 2726 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,081 psi | 79% | 2946 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,106 psi | 71% | 2844 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 41,698 psi | 67% | 2815 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,379 psi | 65% | 2828 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,009 psi | 80% | 2959 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,747 psi | 77% | 2933 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,298 psi | 79% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,379 psi | 66% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,308 psi | 69% | 2785 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 48,515 psi | 78% | 3015 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 48,994 psi | 79% | 2854 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,719 psi | 80% | 2953 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 40,001 psi | 64% | 2782 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 29,443 psi | 47% | 2602 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 46,717 psi | 75% | 2946 fps | 95.6% |
| Unknown powder | <<locked>> | 82% | 37,985 psi | 61% | 2779 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 46,586 psi | 75% | 2799 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,818 psi | 73% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,498 psi | 73% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,156 psi | 55% | 2618 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 80% | 35,520 psi | 57% | 2690 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 45,179 psi | 72% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,129 psi | 58% | 2736 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 33,127 psi | 53% | 2707 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,750 psi | 54% | 2631 fps | 97.4% |
| Winchester 760 | <<locked>> | 84% | 43,352 psi | 70% | 2910 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,661 psi | 49% | 2720 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,735 psi | 83% | 3025 fps | 95.6% |
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 111 powders for .300 Win. Mag. loaded with the .308 | 150gr | Norma Kalahari. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,212 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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. Alliant Reloder-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Norma Kalahari they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Bofors RP15 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.