Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Peregrine Glider (Glider GRM) bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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.
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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>> | 82% | 54,288 psi | 87% | 2940 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,055 psi | 85% | 2959 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,955 psi | 88% | 3031 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,043 psi | 90% | 3018 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,222 psi | 71% | 2900 fps | 96.6% |
| Accurate 4064 | <<locked>> | 88% | 53,272 psi | 85% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,766 psi | 86% | 3100 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 53,621 psi | 86% | 3045 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,810 psi | 88% | 3045 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,057 psi | 90% | 3048 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,563 psi | 86% | 2969 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,577 psi | 86% | 3169 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,056 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,506 psi | 89% | 3094 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,071 psi | 88% | 3166 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,721 psi | 85% | 3143 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,945 psi | 67% | 2930 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,572 psi | 76% | 3114 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,519 psi | 86% | 3054 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 55,767 psi | 89% | 3087 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,666 psi | 89% | 3058 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,215 psi | 87% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,782 psi | 89% | 3077 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,968 psi | 85% | 3041 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 52,982 psi | 85% | 3094 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 92% | 53,432 psi | 86% | 3058 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 54,172 psi | 87% | 3054 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,897 psi | 88% | 3084 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,954 psi | 87% | 3087 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,403 psi | 86% | 3127 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,637 psi | 89% | 3061 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,491 psi | 87% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,230 psi | 87% | 3028 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,114 psi | 87% | 3005 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 56,376 psi | 90% | 3087 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,143 psi | 87% | 3035 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 54,462 psi | 87% | 3094 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,490 psi | 86% | 3068 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 56,057 psi | 90% | 3048 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,548 psi | 86% | 3018 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,185 psi | 85% | 2972 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,172 psi | 87% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,650 psi | 86% | 3025 fps | 98.7% |
| Lovex S070 | <<locked>> | 96% | 54,520 psi | 87% | 3061 fps | 98% |
| Norma 201 | <<locked>> | 86% | 55,680 psi | 89% | 3041 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,362 psi | 90% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,694 psi | 88% | 3077 fps | 100% |
| Norma MRPᴾ | <<locked>> | 100% | 47,181 psi | 76% | 3064 fps | 96.2% |
| Norma URP | <<locked>> | 96% | 52,794 psi | 85% | 3084 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 88% | 55,666 psi | 89% | 3107 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,564 psi | 89% | 3143 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 52,750 psi | 85% | 3005 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,260 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,129 psi | 58% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,272 psi | 85% | 3022 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,318 psi | 90% | 3166 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,246 psi | 90% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,664 psi | 86% | 3123 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,953 psi | 85% | 3150 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 56,391 psi | 90% | 3018 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,188 psi | 90% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,637 psi | 89% | 3077 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,666 psi | 89% | 3058 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,650 psi | 86% | 3025 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,548 psi | 86% | 3018 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,172 psi | 87% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,520 psi | 87% | 3061 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,998 psi | 87% | 3087 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,766 psi | 88% | 3041 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,738 psi | 89% | 3071 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,664 psi | 86% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,201 psi | 87% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,693 psi | 86% | 2976 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 53,185 psi | 85% | 2923 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,534 psi | 87% | 3031 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,912 psi | 90% | 3074 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,911 psi | 88% | 3150 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,691 psi | 81% | 3018 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 84% | 54,056 psi | 87% | 2913 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,173 psi | 90% | 2999 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,621 psi | 86% | 2969 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,853 psi | 86% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,361 psi | 89% | 3087 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 52,910 psi | 85% | 2989 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,303 psi | 89% | 3015 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,346 psi | 87% | 3087 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,601 psi | 75% | 3015 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,666 psi | 89% | 3064 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,055 psi | 85% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,243 psi | 85% | 3100 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,695 psi | 60% | 2943 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,622 psi | 89% | 3077 fps | 100% |
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% | 50,908 psi | 82% | 2890 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,424 psi | 70% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,285 psi | 82% | 2972 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,023 psi | 79% | 2900 fps | 95.8% |
| Accurate 3100 | <<locked>> | 98% | 41,075 psi | 66% | 2838 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,133 psi | 66% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,983 psi | 56% | 2720 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 47,108 psi | 76% | 2930 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,016 psi | 64% | 2766 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,269 psi | 79% | 2936 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,053 psi | 80% | 2920 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,308 psi | 69% | 2966 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,856 psi | 64% | 2789 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,714 psi | 68% | 2858 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,027 psi | 56% | 2740 fps | 95.6% |
| Alliant Reloder-17 | 60.7 gr | 80% | 34,403 psi | 55% | 2749 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,342 psi | 49% | 2628 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,203 psi | 61% | 2900 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,688 psi | 75% | 2933 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 39,421 psi | 63% | 2789 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 45,861 psi | 74% | 2877 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,792 psi | 81% | 2920 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,530 psi | 78% | 2959 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,379 psi | 65% | 2795 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 43,265 psi | 69% | 2907 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 90% | 50,198 psi | 80% | 2999 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,587 psi | 76% | 2940 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,081 psi | 48% | 2569 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,918 psi | 70% | 2910 fps | 99.6% |
| Hodgdon Superformance | 72.2 gr | 90% | 46,064 psi | 74% | 2989 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 42% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,658 psi | 73% | 2887 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,688 psi | 76% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,003 psi | 67% | 2802 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,585 psi | 71% | 2828 fps | 95.5% |
| IMR 4350 | <<locked>> | 92% | 46,383 psi | 74% | 2910 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,802 psi | 72% | 2858 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 33,895 psi | 54% | 2677 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 43,787 psi | 70% | 2890 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 49,269 psi | 79% | 2936 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,586 psi | 75% | 2904 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,818 psi | 75% | 2858 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 41,858 psi | 67% | 2802 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,102 psi | 63% | 2743 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 42,235 psi | 68% | 2828 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,079 psi | 74% | 2874 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,601 psi | 75% | 2884 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,076 psi | 67% | 2844 fps | 98.7% |
| Norma MRP | <<locked>> | 98% | 44,019 psi | 71% | 2995 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 35,230 psi | 56% | 2723 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,047 psi | 67% | 2861 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,508 psi | 63% | 2831 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,226 psi | 79% | 2943 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,095 psi | 79% | 2966 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 43% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,625 psi | 65% | 2776 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,542 psi | 73% | 2976 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,666 psi | 59% | 2825 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,867 psi | 56% | 2740 fps | 95% |
| ReloadSwiss RS 70 | 66.3 gr | 86% | 37,260 psi | 60% | 2808 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 49,806 psi | 80% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,642 psi | 70% | 2822 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,144 psi | 60% | 2730 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 45,861 psi | 74% | 2877 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,102 psi | 63% | 2743 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,586 psi | 75% | 2904 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,858 psi | 67% | 2802 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,235 psi | 68% | 2828 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,334 psi | 61% | 2785 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,601 psi | 76% | 2917 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,687 psi | 73% | 2894 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,384 psi | 76% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,537 psi | 63% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,888 psi | 70% | 2799 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 46,992 psi | 75% | 2825 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,485 psi | 76% | 2913 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 37,942 psi | 61% | 2740 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 27,499 psi | 44% | 2546 fps | 95.7% |
| Somchem S385 | <<locked>> | 98% | 47,253 psi | 76% | 2956 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 47,834 psi | 77% | 2818 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,569 psi | 70% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,135 psi | 71% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,100 psi | 58% | 2667 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 34,534 psi | 55% | 2671 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 49,400 psi | 79% | 2933 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,554 psi | 68% | 2799 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,260 psi | 58% | 2726 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 33,040 psi | 53% | 2713 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,923 psi | 51% | 2585 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 49,545 psi | 79% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,265 psi | 69% | 2907 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,690 psi | 49% | 2720 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,426 psi | 73% | 2900 fps | 99.5% |
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 93 powders for .300 Win. Mag. loaded with the .308 | 150gr | Peregrine Glider (Glider GRM). ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,202 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Peregrine Glider (Glider GRM) they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.