Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 165gr | NorthFork Bonded Core bullet and 86 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 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.
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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 2700 | <<locked>> | 82% | 52,866 psi | 87% | 2923 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,462 psi | 89% | 3025 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 52,156 psi | 86% | 2917 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,765 psi | 87% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 51,808 psi | 85% | 3110 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,446 psi | 86% | 2949 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,911 psi | 89% | 3064 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,085 psi | 90% | 3117 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,042 psi | 90% | 3130 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,027 psi | 89% | 3064 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,040 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,171 psi | 87% | 2992 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,548 psi | 88% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,737 psi | 90% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,301 psi | 88% | 3054 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 3114 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,053 psi | 84% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,353 psi | 73% | 2963 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,810 psi | 90% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,443 psi | 81% | 3031 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 53,853 psi | 88% | 2989 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 3114 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 53,301 psi | 88% | 2972 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 54,201 psi | 89% | 3005 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,897 psi | 90% | 3074 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 54,679 psi | 90% | 3031 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,027 psi | 89% | 3038 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,780 psi | 88% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,511 psi | 71% | 2995 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 88% | 51,329 psi | 84% | 3048 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 60% | 1886 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,880 psi | 85% | 2930 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,128 psi | 89% | 2959 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,288 psi | 89% | 3005 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,013 psi | 90% | 3002 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 53,301 psi | 88% | 3015 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,534 psi | 90% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,490 psi | 88% | 2992 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,547 psi | 86% | 3084 fps | 96.7% |
| Lovex S062 | <<locked>> | 82% | 52,025 psi | 85% | 2923 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,027 psi | 90% | 2995 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 53,026 psi | 87% | 2986 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,252 psi | 74% | 2871 fps | 98.6% |
| Norma 203B | <<locked>> | 82% | 52,504 psi | 86% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,013 psi | 90% | 3058 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 53,621 psi | 88% | 3140 fps | 99.2% |
| Norma URP | <<locked>> | 90% | 51,735 psi | 85% | 3009 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,258 psi | 87% | 3002 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,953 psi | 87% | 3104 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 92% | 53,940 psi | 89% | 3064 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,297 psi | 78% | 2972 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 61% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,143 psi | 89% | 2989 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,331 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,765 psi | 87% | 3048 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,839 psi | 90% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,526 psi | 71% | 2989 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 53,838 psi | 88% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,925 psi | 89% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,141 psi | 86% | 2979 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 96% | 52,373 psi | 86% | 3038 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 53,301 psi | 88% | 2972 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,027 psi | 90% | 2995 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 52,025 psi | 85% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,026 psi | 87% | 2986 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 51,938 psi | 85% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,882 psi | 90% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,737 psi | 90% | 2946 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,909 psi | 85% | 3031 fps | 97.9% |
| Somchem S355 | <<locked>> | 86% | 53,998 psi | 89% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,809 psi | 88% | 2969 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 54,389 psi | 89% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,142 psi | 87% | 3012 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 54,302 psi | 89% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,375 psi | 89% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,114 psi | 90% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,621 psi | 88% | 3002 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,417 psi | 86% | 2986 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 52,663 psi | 86% | 2904 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,750 psi | 87% | 3005 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 53,490 psi | 88% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,911 psi | 89% | 3127 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,171 psi | 87% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,561 psi | 85% | 3018 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,195 psi | 76% | 3104 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,026 psi | 87% | 3002 fps | 97.9% |
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 2700 | <<locked>> | 80% | 49,530 psi | 81% | 2867 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,692 psi | 55% | 2618 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,008 psi | 80% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,449 psi | 61% | 2726 fps | 98.2% |
| Accurate High Country | 74.4 gr | 92% | 45,020 psi | 74% | 2979 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,325 psi | 76% | 2841 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,150 psi | 72% | 2881 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,225 psi | 79% | 2989 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,126 psi | 84% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,582 psi | 68% | 2825 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,833 psi | 77% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,966 psi | 82% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,492 psi | 60% | 2736 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,321 psi | 68% | 2867 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,162 psi | 68% | 2818 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,249 psi | 68% | 2864 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,701 psi | 44% | 2477 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,271 psi | 53% | 2657 fps | 95.2% |
| Alliant Reloder-26 | 68.3 gr | 82% | 30,574 psi | 50% | 2651 fps | 95.3% |
| Bofors RP15 | <<locked>> | 96% | 43,569 psi | 72% | 2913 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,021 psi | 77% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,249 psi | 68% | 2864 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,423 psi | 68% | 2743 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 47,442 psi | 78% | 2887 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,363 psi | 65% | 2772 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,192 psi | 69% | 2792 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,633 psi | 83% | 2979 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,055 psi | 56% | 2628 fps | 98.8% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,683 psi | 67% | 2923 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,305 psi | 63% | 2779 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 45% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,704 psi | 80% | 2877 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,952 psi | 84% | 2907 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,610 psi | 65% | 2723 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,801 psi | 70% | 2772 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,013 psi | 59% | 2677 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,271 psi | 84% | 2969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,082 psi | 82% | 2930 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 48,994 psi | 80% | 3018 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 48,892 psi | 80% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,350 psi | 66% | 2723 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 38,638 psi | 63% | 2703 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 34,882 psi | 57% | 2648 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 49,342 psi | 81% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,817 psi | 74% | 2874 fps | 95.8% |
| Norma MRP | 71.1 gr | 88% | 37,811 psi | 62% | 2815 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,202 psi | 61% | 2720 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,632 psi | 81% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,919 psi | 75% | 2966 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,071 psi | 59% | 2703 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 40,828 psi | 67% | 2835 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 46% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,529 psi | 78% | 2871 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,888 psi | 72% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,101 psi | 61% | 2743 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,071 psi | 59% | 2746 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,681 psi | 62% | 2838 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 50,604 psi | 83% | 2884 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,367 psi | 73% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,788 psi | 75% | 2858 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 42,917 psi | 70% | 2858 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,423 psi | 68% | 2743 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,350 psi | 66% | 2723 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 48,892 psi | 80% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,638 psi | 63% | 2703 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,498 psi | 75% | 2877 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,585 psi | 75% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,523 psi | 65% | 2664 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,525 psi | 70% | 2851 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 44,628 psi | 73% | 2822 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,227 psi | 82% | 2907 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,576 psi | 55% | 2674 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,145 psi | 63% | 2720 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 50,937 psi | 84% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,126 psi | 84% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,627 psi | 70% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,638 psi | 63% | 2720 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 40,190 psi | 66% | 2756 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,371 psi | 81% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,058 psi | 62% | 2720 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,443 psi | 48% | 2559 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 96% | 50,372 psi | 83% | 3061 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,797 psi | 62% | 2687 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,537 psi | 65% | 2779 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,222 psi | 41% | 2503 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,062 psi | 71% | 2822 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 86 powders for .300 Blaser Mag. loaded with the .308 | 165gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,189 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 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 165.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Norma MRP rank at the top here: for .300 Blaser Mag. with the .308 | 165gr | NorthFork Bonded Core 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.