Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Remington PSP Core-Lokt bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 52,388 psi | 86% | 2887 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 54,128 psi | 89% | 2927 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,490 psi | 88% | 3031 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 54,317 psi | 89% | 3028 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 52,808 psi | 87% | 2844 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,868 psi | 90% | 2976 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 52,591 psi | 86% | 2972 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,943 psi | 64% | 2756 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,708 psi | 88% | 2864 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,839 psi | 90% | 2986 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,388 psi | 86% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,375 psi | 89% | 2966 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,083 psi | 86% | 2972 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,968 psi | 87% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,892 psi | 80% | 2946 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,011 psi | 87% | 3041 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 3012 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 54,679 psi | 90% | 2884 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,730 psi | 73% | 2867 fps | 96.7% |
| Bofors RP5 | <<locked>> | 96% | 52,083 psi | 86% | 2972 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 53,911 psi | 89% | 2877 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,327 psi | 79% | 2890 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 54,824 psi | 90% | 2904 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,489 psi | 86% | 2927 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 52,098 psi | 86% | 2884 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 94% | 52,692 psi | 87% | 2913 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,590 psi | 85% | 2897 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,866 psi | 85% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,964 psi | 79% | 2999 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 52,475 psi | 86% | 2959 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 60% | 1821 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,085 psi | 90% | 2913 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,127 psi | 86% | 2848 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 54,534 psi | 90% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,157 psi | 89% | 2904 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 53,853 psi | 88% | 3009 fps | 98.1% |
| Lovex S065 | <<locked>> | 86% | 52,301 psi | 86% | 2844 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,664 psi | 88% | 2890 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,980 psi | 82% | 2848 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 52,156 psi | 86% | 2907 fps | 98.5% |
| Norma MRP | <<locked>> | 94% | 51,619 psi | 85% | 2995 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 52,707 psi | 87% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,244 psi | 89% | 3025 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 51,459 psi | 84% | 2910 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,402 psi | 86% | 2963 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 62% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,621 psi | 90% | 2887 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,692 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,027 psi | 89% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,243 psi | 86% | 2976 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,080 psi | 79% | 2995 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 54,766 psi | 90% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,939 psi | 87% | 2890 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 53,621 psi | 88% | 2953 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 53,911 psi | 89% | 2877 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,301 psi | 86% | 2844 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,664 psi | 88% | 2890 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,765 psi | 87% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,069 psi | 85% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,056 psi | 90% | 2848 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,171 psi | 87% | 2946 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,636 psi | 90% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,607 psi | 90% | 2884 fps | 97.4% |
| Somchem S365 | <<locked>> | 90% | 52,576 psi | 86% | 2913 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,331 psi | 89% | 2927 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 52,373 psi | 86% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,708 psi | 90% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,838 psi | 88% | 2904 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,838 psi | 88% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 51,996 psi | 85% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 51,779 psi | 85% | 2986 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,213 psi | 84% | 2959 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,244 psi | 89% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,721 psi | 87% | 2930 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,953 psi | 87% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,259 psi | 89% | 2920 fps | 98.9% |
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 3100 | <<locked>> | 80% | 30,443 psi | 50% | 2438 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 41,162 psi | 68% | 2703 fps | 99.6% |
| Accurate High Country | <<locked>> | 88% | 43,410 psi | 71% | 2841 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 92% | 47,224 psi | 78% | 2904 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 49,690 psi | 82% | 2792 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,566 psi | 65% | 2684 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 90% | 42,975 psi | 71% | 2785 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 34,243 psi | 56% | 2631 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,531 psi | 83% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,726 psi | 65% | 2710 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,411 psi | 75% | 2835 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,320 psi | 65% | 2677 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,333 psi | 61% | 2677 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,269 psi | 48% | 2467 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,283 psi | 48% | 2480 fps | 95.1% |
| Alliant Reloder-26 | 67.6 gr | 80% | 31,531 psi | 52% | 2592 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 39,407 psi | 65% | 2723 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 51,169 psi | 84% | 2831 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,989 psi | 69% | 2812 fps | 95.9% |
| Bofors RP5 | <<locked>> | 86% | 37,333 psi | 61% | 2677 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,556 psi | 73% | 2710 fps | 98% |
| Hodgdon H1000 | <<locked>> | 96% | 42,177 psi | 69% | 2766 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,358 psi | 84% | 2848 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,888 psi | 70% | 2749 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,774 psi | 75% | 2769 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 46,006 psi | 76% | 2795 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,063 psi | 74% | 2779 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,391 psi | 61% | 2598 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,854 psi | 61% | 2736 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 41,872 psi | 69% | 2766 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,499 psi | 45% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,234 psi | 66% | 2641 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,890 psi | 75% | 2736 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 39,392 psi | 65% | 2651 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,875 psi | 74% | 2736 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 44,135 psi | 72% | 2825 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 43,511 psi | 71% | 2687 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 41,800 psi | 69% | 2674 fps | 98.1% |
| Lovex S071 | <<locked>> | 84% | 29,921 psi | 49% | 2425 fps | 95% |
| Norma 204 | <<locked>> | 80% | 39,900 psi | 66% | 2671 fps | 95.6% |
| Norma MRP | 67.3 gr | 82% | 34,026 psi | 56% | 2621 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,625 psi | 67% | 2690 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 40,814 psi | 67% | 2766 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,552 psi | 65% | 2684 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 36,376 psi | 60% | 2644 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,050 psi | 46% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,053 psi | 84% | 2828 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,225 psi | 79% | 2881 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,944 psi | 67% | 2720 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,450 psi | 65% | 2733 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,736 psi | 55% | 2648 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,109 psi | 79% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,787 psi | 72% | 2723 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 38,479 psi | 63% | 2661 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,556 psi | 73% | 2710 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,511 psi | 71% | 2687 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 41,800 psi | 69% | 2674 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,472 psi | 81% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,907 psi | 80% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,569 psi | 70% | 2631 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,130 psi | 63% | 2654 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 48,167 psi | 79% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,628 psi | 73% | 2710 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,362 psi | 61% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,374 psi | 56% | 2533 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 46,093 psi | 76% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,047 psi | 69% | 2690 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,129 psi | 59% | 2569 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,539 psi | 68% | 2694 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,779 psi | 54% | 2549 fps | 98.4% |
| Vihtavuori N560 | 73.8 gr | 90% | 45,092 psi | 74% | 2858 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 44,556 psi | 73% | 2835 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,104 psi | 67% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,091 psi | 71% | 2753 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,020 psi | 43% | 2461 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,464 psi | 63% | 2628 fps | 95.3% |
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 83 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Remington PSP Core-Lokt. Winchester StaBALL HD delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,084 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | Remington PSP Core-Lokt they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N170 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.