Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 168gr | Reichenberg HDB Universal bullet and 87 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% | 53,940 psi | 89% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,315 psi | 86% | 2897 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 2992 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 54,433 psi | 89% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 51,938 psi | 85% | 2989 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,042 psi | 90% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,287 psi | 87% | 3038 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,491 psi | 89% | 3087 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,360 psi | 89% | 3097 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,417 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,547 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,113 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,302 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,591 psi | 86% | 3025 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,345 psi | 88% | 3084 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,285 psi | 83% | 3012 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,743 psi | 72% | 2933 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,070 psi | 89% | 3156 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,936 psi | 80% | 3002 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 53,040 psi | 87% | 2959 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,345 psi | 88% | 3084 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 52,649 psi | 86% | 2943 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 53,519 psi | 88% | 2976 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,360 psi | 89% | 3048 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,273 psi | 89% | 3009 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 54,781 psi | 90% | 3035 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,606 psi | 88% | 3015 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,301 psi | 88% | 2972 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,752 psi | 90% | 3012 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,772 psi | 70% | 2963 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 54,578 psi | 90% | 3084 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 59% | 1870 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,447 psi | 89% | 2953 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,635 psi | 88% | 2936 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 53,621 psi | 88% | 2976 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,346 psi | 89% | 2972 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 52,663 psi | 86% | 2986 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,925 psi | 89% | 2992 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,852 psi | 87% | 2963 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,880 psi | 85% | 3058 fps | 96.7% |
| Lovex S062 | <<locked>> | 84% | 54,650 psi | 90% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,375 psi | 89% | 2969 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 52,141 psi | 86% | 2953 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,150 psi | 72% | 2835 fps | 98.6% |
| Norma 203B | <<locked>> | 82% | 51,851 psi | 85% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,317 psi | 89% | 3028 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 52,881 psi | 87% | 3110 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 54,592 psi | 90% | 3035 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,489 psi | 86% | 2972 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,330 psi | 86% | 3074 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 53,258 psi | 87% | 3031 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,557 psi | 76% | 2940 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,577 psi | 88% | 2959 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,577 psi | 88% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 51,909 psi | 85% | 3015 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,404 psi | 89% | 3107 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,757 psi | 70% | 2956 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 53,055 psi | 87% | 2904 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,142 psi | 87% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,071 psi | 90% | 3009 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 51,619 psi | 85% | 3005 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 52,649 psi | 86% | 2943 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,375 psi | 89% | 2969 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 54,650 psi | 90% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,141 psi | 86% | 2953 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,998 psi | 90% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,418 psi | 89% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,940 psi | 89% | 2917 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,955 psi | 90% | 3064 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 53,084 psi | 87% | 2946 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,127 psi | 87% | 2943 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 53,838 psi | 88% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,330 psi | 86% | 2982 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 53,577 psi | 88% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,795 psi | 88% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,520 psi | 90% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,098 psi | 87% | 2976 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,721 psi | 85% | 2956 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 52,069 psi | 85% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,185 psi | 86% | 2976 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 52,750 psi | 87% | 3038 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,243 psi | 87% | 3097 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,750 psi | 87% | 2940 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,592 psi | 90% | 3051 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,382 psi | 75% | 3071 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,518 psi | 86% | 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% | 50,459 psi | 83% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,747 psi | 80% | 2835 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 32,692 psi | 54% | 2579 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 47,877 psi | 79% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,477 psi | 60% | 2690 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 45,571 psi | 75% | 2812 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 43,627 psi | 72% | 2854 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 96% | 47,587 psi | 78% | 2959 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,662 psi | 83% | 3035 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,137 psi | 76% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,327 psi | 81% | 2910 fps | 100% |
| Alliant Reloder-16 | 60.1 gr | 80% | 35,723 psi | 59% | 2703 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,669 psi | 67% | 2838 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,265 psi | 71% | 2848 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,640 psi | 67% | 2835 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,904 psi | 43% | 2441 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,560 psi | 52% | 2625 fps | 95.1% |
| Alliant Reloder-26 | 68.1 gr | 82% | 29,747 psi | 49% | 2615 fps | 95.2% |
| Bofors RP15 | <<locked>> | 96% | 42,743 psi | 70% | 2881 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 46,166 psi | 76% | 2844 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,640 psi | 67% | 2835 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,698 psi | 67% | 2713 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,673 psi | 77% | 2858 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,696 psi | 64% | 2743 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 41,611 psi | 68% | 2766 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 51,082 psi | 84% | 2969 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,980 psi | 82% | 2949 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,170 psi | 54% | 2592 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,140 psi | 84% | 2956 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,074 psi | 66% | 2894 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 37,681 psi | 62% | 2749 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 44% | 1670 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,935 psi | 79% | 2844 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,415 psi | 83% | 2881 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 39,015 psi | 64% | 2694 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,235 psi | 69% | 2746 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 35,186 psi | 58% | 2644 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 50,633 psi | 83% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,647 psi | 82% | 2907 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 48,544 psi | 80% | 2995 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 48,167 psi | 79% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,581 psi | 65% | 2690 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 37,840 psi | 62% | 2671 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 33,924 psi | 56% | 2612 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 48,660 psi | 80% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,278 psi | 68% | 2782 fps | 95% |
| Norma MRP | 70.9 gr | 88% | 37,130 psi | 61% | 2782 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,492 psi | 60% | 2690 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,037 psi | 81% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,179 psi | 74% | 2936 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,404 psi | 58% | 2674 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 40,001 psi | 66% | 2802 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,456 psi | 45% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,717 psi | 77% | 2838 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,308 psi | 71% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,318 psi | 60% | 2710 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,447 psi | 58% | 2717 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,883 psi | 61% | 2805 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 49,777 psi | 82% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,482 psi | 71% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,223 psi | 74% | 2831 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 42,279 psi | 69% | 2828 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 40,698 psi | 67% | 2713 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,581 psi | 65% | 2690 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 48,167 psi | 79% | 2841 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,840 psi | 62% | 2671 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,875 psi | 74% | 2848 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,020 psi | 74% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,783 psi | 64% | 2635 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,887 psi | 69% | 2822 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 43,830 psi | 72% | 2789 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,705 psi | 82% | 2881 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 32,822 psi | 54% | 2641 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 37,376 psi | 61% | 2690 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 50,183 psi | 82% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,517 psi | 83% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,916 psi | 69% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,956 psi | 62% | 2690 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 39,392 psi | 65% | 2723 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 48,747 psi | 80% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,304 psi | 61% | 2687 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 28,529 psi | 47% | 2520 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 49,661 psi | 82% | 3031 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,202 psi | 61% | 2661 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 38,696 psi | 64% | 2743 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,395 psi | 40% | 2461 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,279 psi | 69% | 2789 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 87 powders for .300 Blaser Mag. loaded with the .308 | 168gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,156 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.5 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, Norma MRP, Alliant Reloder-16 rank at the top here: for .300 Blaser Mag. with the .308 | 168gr | Reichenberg HDB Universal 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.