Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 168gr | Nosler RDF 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, Norma MRP and Alliant Reloder-16.
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 2495 | <<locked>> | 82% | 55,085 psi | 90% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,736 psi | 87% | 2894 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 2995 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 52,112 psi | 86% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,707 psi | 87% | 2995 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 52,185 psi | 86% | 2920 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,737 psi | 88% | 3038 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 98% | 51,372 psi | 84% | 3025 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,926 psi | 90% | 3100 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,069 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,200 psi | 87% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,505 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,795 psi | 90% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,156 psi | 87% | 3025 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,998 psi | 89% | 3087 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,966 psi | 84% | 3015 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,266 psi | 73% | 2936 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,607 psi | 90% | 3159 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,385 psi | 81% | 3005 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 53,708 psi | 88% | 2959 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,998 psi | 89% | 3087 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 53,156 psi | 87% | 2940 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 54,099 psi | 89% | 2976 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,926 psi | 90% | 3048 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,621 psi | 90% | 3005 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 55,114 psi | 90% | 3028 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,954 psi | 89% | 3009 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,795 psi | 88% | 2972 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,468 psi | 71% | 2969 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 88% | 51,184 psi | 84% | 3022 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 60% | 1864 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,969 psi | 90% | 2949 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,157 psi | 89% | 2936 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,041 psi | 89% | 2976 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,897 psi | 90% | 2972 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 53,258 psi | 87% | 2986 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,563 psi | 90% | 2992 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,330 psi | 88% | 2963 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,489 psi | 86% | 3058 fps | 96.8% |
| Lovex S062 | <<locked>> | 82% | 51,982 psi | 85% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,940 psi | 90% | 2969 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 52,939 psi | 87% | 2959 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,078 psi | 74% | 2844 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 52,504 psi | 86% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,824 psi | 90% | 3031 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 53,577 psi | 88% | 3114 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,085 psi | 90% | 3035 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,142 psi | 87% | 2976 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,794 psi | 87% | 3074 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 53,795 psi | 88% | 3035 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,152 psi | 77% | 2943 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 61% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,041 psi | 89% | 2959 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,244 psi | 89% | 3071 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,547 psi | 86% | 3015 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,752 psi | 90% | 3104 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,250 psi | 71% | 2959 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 53,969 psi | 89% | 2910 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,780 psi | 88% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 51,924 psi | 85% | 2949 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 96% | 52,257 psi | 86% | 3009 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 53,156 psi | 87% | 2940 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,940 psi | 90% | 2969 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 51,982 psi | 85% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,939 psi | 87% | 2959 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 51,837 psi | 85% | 2963 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,897 psi | 90% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,723 psi | 90% | 2920 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,793 psi | 85% | 3002 fps | 98% |
| Somchem S355 | <<locked>> | 86% | 53,795 psi | 88% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,577 psi | 88% | 2940 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 54,447 psi | 89% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,026 psi | 87% | 2986 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 54,186 psi | 89% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,375 psi | 89% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,013 psi | 90% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,592 psi | 88% | 2972 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,170 psi | 86% | 2956 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 52,721 psi | 87% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,765 psi | 87% | 2979 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 53,316 psi | 88% | 3041 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,940 psi | 89% | 3100 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,084 psi | 87% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,547 psi | 85% | 2992 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,035 psi | 76% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,953 psi | 87% | 2976 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 2495 | <<locked>> | 80% | 51,634 psi | 85% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,400 psi | 81% | 2838 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,576 psi | 55% | 2592 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 48,907 psi | 80% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,420 psi | 61% | 2703 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 46,224 psi | 76% | 2815 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 41,379 psi | 68% | 2795 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 48,138 psi | 79% | 2963 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,227 psi | 84% | 3038 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,775 psi | 77% | 2841 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,937 psi | 82% | 2910 fps | 100% |
| Alliant Reloder-16 | 59.5 gr | 80% | 36,463 psi | 60% | 2713 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,350 psi | 68% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,089 psi | 67% | 2792 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,249 psi | 68% | 2841 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,672 psi | 44% | 2454 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,242 psi | 53% | 2635 fps | 95.4% |
| Alliant Reloder-26 | 67.3 gr | 82% | 30,516 psi | 50% | 2631 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 40,698 psi | 67% | 2825 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 47,007 psi | 77% | 2851 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,249 psi | 68% | 2841 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,350 psi | 68% | 2717 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 47,398 psi | 78% | 2861 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,378 psi | 65% | 2749 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,177 psi | 69% | 2769 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 51,648 psi | 85% | 2972 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,531 psi | 83% | 2953 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,968 psi | 56% | 2602 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,640 psi | 67% | 2900 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 38,247 psi | 63% | 2756 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 45% | 1670 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,631 psi | 80% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,937 psi | 84% | 2881 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 39,595 psi | 65% | 2700 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,743 psi | 70% | 2746 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 35,969 psi | 59% | 2654 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 51,242 psi | 84% | 2940 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,140 psi | 82% | 2907 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 96% | 45,861 psi | 75% | 2930 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 48,834 psi | 80% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,292 psi | 66% | 2697 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,580 psi | 63% | 2677 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 32,706 psi | 54% | 2569 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 49,298 psi | 81% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,771 psi | 69% | 2785 fps | 95.1% |
| Norma MRP | 70.1 gr | 88% | 37,811 psi | 62% | 2792 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 37,159 psi | 61% | 2697 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 49,676 psi | 82% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,672 psi | 75% | 2936 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,071 psi | 59% | 2680 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 40,596 psi | 67% | 2808 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 46% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,384 psi | 78% | 2841 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,932 psi | 72% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,101 psi | 61% | 2717 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,143 psi | 59% | 2726 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,739 psi | 62% | 2818 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 50,720 psi | 83% | 2858 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,295 psi | 73% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,730 psi | 75% | 2831 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 40,132 psi | 66% | 2772 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,350 psi | 68% | 2717 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,292 psi | 66% | 2697 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 48,834 psi | 80% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,580 psi | 63% | 2677 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,513 psi | 75% | 2851 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,484 psi | 75% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,508 psi | 65% | 2638 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,482 psi | 70% | 2828 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 44,541 psi | 73% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,154 psi | 82% | 2881 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 33,533 psi | 55% | 2651 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,232 psi | 63% | 2700 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 50,807 psi | 83% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,053 psi | 84% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,612 psi | 70% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,609 psi | 63% | 2697 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,030 psi | 66% | 2730 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 49,400 psi | 81% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,043 psi | 62% | 2697 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,414 psi | 48% | 2536 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 96% | 50,299 psi | 83% | 3038 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,681 psi | 62% | 2664 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,378 psi | 65% | 2749 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,150 psi | 41% | 2484 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,931 psi | 70% | 2795 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 93 powders for .300 Blaser Mag. loaded with the .308 | 168gr | Nosler RDF. Alliant Reloder-26 delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,159 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 (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2217, ADI AR 2225 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, Norma MRP, Alliant Reloder-16 rank at the top here: for .300 Blaser Mag. with the .308 | 168gr | Nosler RDF 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.