Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 167gr | MRR Green Hunting bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country 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.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 53,011 psi | 87% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,781 psi | 90% | 2940 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,083 psi | 86% | 2976 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 53,563 psi | 88% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,534 psi | 90% | 3035 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 53,650 psi | 88% | 3127 fps | 97.3% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,462 psi | 89% | 3123 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 54,346 psi | 89% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,228 psi | 86% | 3022 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,548 psi | 88% | 3074 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,316 psi | 88% | 3084 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,243 psi | 86% | 3018 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,810 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 51,576 psi | 85% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 51,924 psi | 85% | 3038 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,026 psi | 87% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,984 psi | 90% | 3068 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,243 psi | 86% | 3068 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,182 psi | 81% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,685 psi | 70% | 2913 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,634 psi | 86% | 3140 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,703 psi | 78% | 2982 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 52,040 psi | 85% | 2946 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,243 psi | 86% | 3068 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 51,779 psi | 85% | 2930 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 84% | 52,576 psi | 86% | 2963 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,243 psi | 87% | 3031 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 53,127 psi | 87% | 2989 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 98% | 53,548 psi | 88% | 3012 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,373 psi | 86% | 2995 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,069 psi | 85% | 2959 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,722 psi | 88% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,461 psi | 88% | 3071 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 60% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,578 psi | 90% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,693 psi | 88% | 2943 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,997 psi | 87% | 2923 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 52,779 psi | 87% | 2963 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,505 psi | 88% | 2959 fps | 99% |
| IMR 4831 | <<locked>> | 94% | 54,984 psi | 90% | 3025 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,895 psi | 87% | 2979 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,895 psi | 85% | 2949 fps | 95.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,879 psi | 84% | 3038 fps | 96.3% |
| Lovex S062 | <<locked>> | 84% | 53,664 psi | 88% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,258 psi | 87% | 2953 fps | 99.7% |
| Lovex S070 | <<locked>> | 92% | 54,621 psi | 90% | 2999 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,076 psi | 71% | 2818 fps | 98.2% |
| Norma 201 | <<locked>> | 82% | 54,969 psi | 90% | 2946 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,447 psi | 89% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,229 psi | 87% | 3015 fps | 97.8% |
| Norma MRP | <<locked>> | 98% | 51,750 psi | 85% | 3094 fps | 99% |
| Norma URP | <<locked>> | 92% | 53,374 psi | 88% | 3022 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 51,547 psi | 85% | 2963 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,082 psi | 84% | 3051 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 92% | 52,156 psi | 86% | 3018 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,469 psi | 75% | 2920 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 61% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,489 psi | 86% | 2943 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,518 psi | 86% | 3058 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,447 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,055 psi | 87% | 3087 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,640 psi | 68% | 2930 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 52,243 psi | 86% | 2897 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,112 psi | 86% | 2940 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,012 psi | 89% | 2992 fps | 97% |
| Rottweil R 905 | <<locked>> | 98% | 54,288 psi | 89% | 3054 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 51,779 psi | 85% | 2930 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,258 psi | 87% | 2953 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 53,664 psi | 88% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,621 psi | 90% | 2999 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,780 psi | 88% | 3002 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,984 psi | 90% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,447 psi | 88% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,113 psi | 87% | 2904 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,809 psi | 88% | 3048 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 52,330 psi | 86% | 2940 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 52,533 psi | 86% | 3022 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,708 psi | 90% | 3025 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 52,460 psi | 86% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,040 psi | 87% | 2874 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,592 psi | 88% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 51,938 psi | 85% | 2959 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,473 psi | 83% | 2940 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 54,679 psi | 90% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,665 psi | 90% | 3022 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,085 psi | 90% | 3081 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,214 psi | 86% | 3081 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 51,532 psi | 85% | 2927 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,476 psi | 88% | 3035 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,237 psi | 73% | 3051 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,984 psi | 90% | 2986 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,271 psi | 84% | 2959 fps | 97.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 49,603 psi | 81% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,095 psi | 79% | 2825 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 34,214 psi | 56% | 2621 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,007 psi | 77% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,563 psi | 58% | 2674 fps | 97.8% |
| Accurate High Country | 74.7 gr | 94% | 46,398 psi | 76% | 2992 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 98% | 50,676 psi | 83% | 3058 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 44,875 psi | 74% | 2799 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 42,844 psi | 70% | 2841 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 49,835 psi | 82% | 3005 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,632 psi | 81% | 3022 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,772 psi | 70% | 2835 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,179 psi | 74% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,356 psi | 79% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,056 psi | 58% | 2690 fps | 97.9% |
| Alliant Reloder-17 | 63.9 gr | 80% | 39,798 psi | 65% | 2822 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,279 psi | 69% | 2828 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,583 psi | 70% | 2884 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,411 psi | 42% | 2421 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,996 psi | 54% | 2667 fps | 95.6% |
| Alliant Reloder-26 | 68.8 gr | 84% | 31,256 psi | 51% | 2664 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 41,785 psi | 69% | 2861 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 45,353 psi | 74% | 2835 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,583 psi | 70% | 2884 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 40,030 psi | 66% | 2700 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 45,788 psi | 75% | 2844 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 37,855 psi | 62% | 2726 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 80% | 40,944 psi | 67% | 2753 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 96% | 50,096 psi | 82% | 2953 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,994 psi | 80% | 2933 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,474 psi | 53% | 2575 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,140 psi | 82% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,639 psi | 65% | 2799 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 44% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,198 psi | 84% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,195 psi | 77% | 2835 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,545 psi | 81% | 2864 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 38,232 psi | 63% | 2680 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,597 psi | 68% | 2736 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 34,345 psi | 56% | 2628 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 49,588 psi | 81% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,689 psi | 80% | 2890 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 47,616 psi | 78% | 2976 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 47,384 psi | 78% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,943 psi | 64% | 2680 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 37,188 psi | 61% | 2657 fps | 95.8% |
| Lovex S071 | <<locked>> | 92% | 32,967 psi | 54% | 2592 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,576 psi | 85% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,703 psi | 78% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,279 psi | 71% | 2828 fps | 95.4% |
| Norma MRP | <<locked>> | 88% | 36,230 psi | 59% | 2766 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,766 psi | 59% | 2674 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,138 psi | 79% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,413 psi | 78% | 2982 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 34,606 psi | 57% | 2657 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 96% | 39,175 psi | 64% | 2785 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 45% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,079 psi | 76% | 2831 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,351 psi | 70% | 2881 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,433 psi | 58% | 2694 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,722 psi | 57% | 2700 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,798 psi | 64% | 2854 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 49,008 psi | 80% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,699 psi | 70% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,442 psi | 78% | 2877 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 41,263 psi | 68% | 2808 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,030 psi | 66% | 2700 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,943 psi | 64% | 2680 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 47,384 psi | 78% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,188 psi | 61% | 2657 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,947 psi | 72% | 2835 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,416 psi | 84% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,280 psi | 73% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,174 psi | 63% | 2621 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,872 psi | 67% | 2802 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 43,076 psi | 71% | 2779 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 32,126 psi | 53% | 2628 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 39,102 psi | 64% | 2730 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 49,298 psi | 81% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,734 psi | 82% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,220 psi | 68% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,101 psi | 61% | 2674 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 41,321 psi | 68% | 2766 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 47,834 psi | 79% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,477 psi | 60% | 2674 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 27,702 psi | 45% | 2500 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 96% | 48,660 psi | 80% | 3015 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,463 psi | 60% | 2648 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,000 psi | 62% | 2733 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,556 psi | 42% | 2510 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,372 psi | 84% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,539 psi | 68% | 2776 fps | 95.1% |
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 92 powders for .300 Blaser Mag. loaded with the .308 | 167gr | MRR Green Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,140 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:12.5 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, Accurate High Country, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 167gr | MRR Green Hunting 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.