Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 170gr | Sako Blade bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-17 and Norma MRP.
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% | 55,013 psi | 86% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,753 psi | 89% | 2913 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2953 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 55,724 psi | 87% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,942 psi | 89% | 3005 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,537 psi | 90% | 3107 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,173 psi | 88% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,389 psi | 85% | 2995 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 3048 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,666 psi | 87% | 3054 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,797 psi | 89% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,159 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,143 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,637 psi | 87% | 3035 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,479 psi | 90% | 3045 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3045 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 2972 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,744 psi | 70% | 2894 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,651 psi | 87% | 3117 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,067 psi | 78% | 2959 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,041 psi | 85% | 2913 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3045 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 57,217 psi | 90% | 2959 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,476 psi | 85% | 2933 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,564 psi | 87% | 3005 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,158 psi | 86% | 2963 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 55,912 psi | 88% | 2992 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,723 psi | 86% | 2972 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,520 psi | 85% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,985 psi | 88% | 2972 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,888 psi | 69% | 2923 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 56,072 psi | 88% | 3045 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,463 psi | 88% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,608 psi | 87% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,505 psi | 85% | 2894 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,708 psi | 86% | 2936 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,419 psi | 87% | 2933 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 57,435 psi | 90% | 2999 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,897 psi | 86% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,508 psi | 90% | 2982 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,171 psi | 83% | 3018 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 57,000 psi | 89% | 2897 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,608 psi | 87% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,259 psi | 87% | 2927 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,608 psi | 89% | 2969 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,266 psi | 71% | 2795 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 56,739 psi | 89% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,449 psi | 88% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,709 psi | 87% | 2992 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 54,346 psi | 85% | 3068 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,593 psi | 87% | 2992 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,363 psi | 90% | 2989 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3038 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 54,636 psi | 86% | 2995 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,805 psi | 75% | 2904 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,028 psi | 58% | 1886 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,433 psi | 85% | 2917 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,940 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,927 psi | 89% | 3028 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,608 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,845 psi | 69% | 2917 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 84% | 57,435 psi | 90% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,740 psi | 90% | 2963 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,159 psi | 88% | 2969 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 56,637 psi | 89% | 3028 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,217 psi | 90% | 2959 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,259 psi | 87% | 2927 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,608 psi | 87% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,608 psi | 89% | 2969 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,941 psi | 88% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,840 psi | 89% | 2946 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,551 psi | 90% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,303 psi | 87% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,969 psi | 86% | 2877 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,144 psi | 88% | 3022 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 57,232 psi | 90% | 2838 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,725 psi | 90% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,331 psi | 85% | 2904 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 55,187 psi | 86% | 2992 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,203 psi | 90% | 3002 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 54,389 psi | 85% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,723 psi | 86% | 2841 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,434 psi | 87% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,273 psi | 85% | 2933 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2917 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 56,492 psi | 89% | 2884 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,942 psi | 89% | 2992 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,665 psi | 86% | 3058 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,853 psi | 84% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,811 psi | 87% | 3009 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,007 psi | 74% | 3035 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,145 psi | 90% | 2956 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,653 psi | 90% | 2999 fps | 98.5% |
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% | 51,532 psi | 81% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,777 psi | 78% | 2799 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,504 psi | 53% | 2539 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 48,863 psi | 77% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,376 psi | 59% | 2651 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 98% | 53,432 psi | 84% | 3038 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 46,441 psi | 73% | 2769 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,599 psi | 70% | 2815 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,559 psi | 76% | 2920 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,692 psi | 81% | 2992 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,847 psi | 73% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,270 psi | 79% | 2867 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,492 psi | 57% | 2664 fps | 98.2% |
| Alliant Reloder-17 | 65.4 gr | 80% | 41,597 psi | 65% | 2795 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,237 psi | 69% | 2805 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,640 psi | 65% | 2795 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,542 psi | 42% | 2402 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,314 psi | 51% | 2585 fps | 95% |
| Alliant Reloder-26 | 70.4 gr | 84% | 32,837 psi | 51% | 2644 fps | 96.3% |
| Bofors RP15 | <<locked>> | 96% | 43,801 psi | 69% | 2841 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,108 psi | 74% | 2802 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,640 psi | 65% | 2795 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,452 psi | 65% | 2671 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,616 psi | 75% | 2818 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,537 psi | 62% | 2703 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,438 psi | 67% | 2726 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,127 psi | 82% | 2930 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,010 psi | 80% | 2910 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,982 psi | 53% | 2552 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,156 psi | 82% | 2913 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,002 psi | 64% | 2854 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,435 psi | 60% | 2707 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,069 psi | 83% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,805 psi | 76% | 2805 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,242 psi | 80% | 2838 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,769 psi | 62% | 2654 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,004 psi | 67% | 2707 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,013 psi | 56% | 2605 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,590 psi | 81% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,618 psi | 79% | 2867 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,574 psi | 78% | 2953 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 53,650 psi | 84% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,081 psi | 77% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,364 psi | 63% | 2651 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,624 psi | 61% | 2631 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 34,708 psi | 54% | 2569 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,301 psi | 84% | 2864 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,588 psi | 78% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,136 psi | 71% | 2802 fps | 95.8% |
| Norma MRP | 71.6 gr | 88% | 38,101 psi | 60% | 2743 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,304 psi | 58% | 2648 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 49,995 psi | 78% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,224 psi | 72% | 2897 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,172 psi | 57% | 2631 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 41,118 psi | 64% | 2769 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 43% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,776 psi | 75% | 2802 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,266 psi | 69% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,173 psi | 58% | 2667 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,172 psi | 57% | 2674 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,869 psi | 59% | 2769 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,720 psi | 79% | 2812 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,425 psi | 70% | 2749 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,253 psi | 72% | 2792 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,163 psi | 68% | 2785 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,452 psi | 65% | 2671 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,364 psi | 63% | 2651 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,081 psi | 77% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,624 psi | 61% | 2631 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,788 psi | 72% | 2805 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,272 psi | 83% | 2894 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,244 psi | 85% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,847 psi | 72% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,508 psi | 62% | 2595 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,772 psi | 67% | 2779 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 53,882 psi | 84% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,715 psi | 70% | 2749 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,691 psi | 79% | 2841 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,678 psi | 53% | 2598 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 38,334 psi | 60% | 2651 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 51,213 psi | 80% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,459 psi | 81% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,757 psi | 67% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,783 psi | 61% | 2651 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,364 psi | 63% | 2687 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,603 psi | 78% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,101 psi | 60% | 2648 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 29,196 psi | 46% | 2477 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 50,981 psi | 80% | 2992 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,898 psi | 59% | 2618 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,697 psi | 62% | 2703 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,932 psi | 39% | 2418 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,258 psi | 83% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,482 psi | 68% | 2756 fps | 95.5% |
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 101 powders for .300 Weath. Mag. loaded with the .308 | 170gr | Sako Blade. Alliant Reloder-26 delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,117 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:10.5 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. Alliant Reloder-26, Alliant Reloder-17, Norma MRP rank at the top here: for .300 Weath. Mag. with the .308 | 170gr | Sako Blade they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.