Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 165gr | Remington PSP Core-Lokt bullet and 79 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 ReloadSwiss RS 70.
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 2700 | <<locked>> | 82% | 55,114 psi | 90% | 2976 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 53,983 psi | 89% | 3031 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,708 psi | 90% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,243 psi | 86% | 3022 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 54,505 psi | 89% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,982 psi | 87% | 3068 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 54,491 psi | 89% | 3123 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,112 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,997 psi | 87% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,143 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,504 psi | 86% | 3054 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,737 psi | 88% | 3120 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,152 psi | 77% | 3035 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,563 psi | 90% | 3192 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,504 psi | 86% | 3097 fps | 98.2% |
| Bofors RP3 | <<locked>> | 82% | 52,837 psi | 87% | 2982 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,737 psi | 88% | 3120 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 52,402 psi | 86% | 2972 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,644 psi | 77% | 2963 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 52,997 psi | 87% | 2999 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,114 psi | 89% | 3074 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 53,766 psi | 88% | 3031 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 54,418 psi | 89% | 3061 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,301 psi | 88% | 3041 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,345 psi | 88% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,180 psi | 76% | 3074 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 88% | 54,302 psi | 89% | 3110 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 60% | 1913 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,882 psi | 88% | 2976 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,374 psi | 88% | 3005 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,809 psi | 88% | 2999 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 52,649 psi | 86% | 3015 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,489 psi | 86% | 2992 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 98% | 51,851 psi | 85% | 3091 fps | 96.9% |
| Lovex S062 | <<locked>> | 82% | 54,317 psi | 89% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,056 psi | 89% | 2995 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 52,141 psi | 86% | 2986 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,964 psi | 79% | 2930 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 54,955 psi | 90% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,128 psi | 89% | 3061 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 53,403 psi | 88% | 3146 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 54,433 psi | 89% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,359 psi | 86% | 3110 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 90% | 53,301 psi | 88% | 3064 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,343 psi | 83% | 3041 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 61% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,026 psi | 87% | 2986 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,592 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,040 psi | 85% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,157 psi | 89% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,311 psi | 76% | 3068 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 84% | 53,084 psi | 87% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,752 psi | 90% | 3038 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 94% | 51,909 psi | 85% | 3041 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 86% | 52,402 psi | 86% | 2972 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,056 psi | 89% | 2995 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 54,317 psi | 89% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,141 psi | 86% | 2986 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,389 psi | 89% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,708 psi | 88% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,577 psi | 88% | 2943 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,984 psi | 90% | 3094 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 52,910 psi | 87% | 2976 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,837 psi | 87% | 2969 fps | 96.3% |
| Somchem S365 | <<locked>> | 92% | 54,012 psi | 89% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,562 psi | 86% | 3018 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 86% | 54,230 psi | 89% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,924 psi | 87% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,851 psi | 85% | 2989 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 54,897 psi | 90% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 52,054 psi | 85% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,185 psi | 87% | 3071 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,534 psi | 88% | 3133 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,081 psi | 81% | 3035 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,359 psi | 86% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,331 psi | 89% | 3081 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,285 psi | 83% | 3176 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,315 psi | 86% | 3005 fps | 98% |
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% | 51,605 psi | 85% | 2917 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 33,417 psi | 55% | 2618 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 51,503 psi | 85% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,639 psi | 65% | 2782 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 48,254 psi | 79% | 2890 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,857 psi | 67% | 2822 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 47,543 psi | 78% | 2992 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,921 psi | 80% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,334 psi | 63% | 2795 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,569 psi | 72% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,495 psi | 66% | 2815 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,988 psi | 67% | 2867 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,253 psi | 46% | 2536 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,039 psi | 53% | 2664 fps | 95.5% |
| Alliant Reloder-26 | 69.8 gr | 80% | 30,182 psi | 50% | 2651 fps | 95.5% |
| Bofors RP15 | <<locked>> | 92% | 40,437 psi | 66% | 2854 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 49,487 psi | 81% | 2930 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,988 psi | 67% | 2867 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 43,337 psi | 71% | 2799 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 43,656 psi | 72% | 2900 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 49,734 psi | 82% | 2943 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,510 psi | 68% | 2831 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 44,295 psi | 73% | 2854 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 92% | 47,514 psi | 78% | 2936 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,937 psi | 82% | 2982 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,795 psi | 59% | 2677 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,480 psi | 66% | 2936 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 40,393 psi | 66% | 2841 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 45% | 1709 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,763 psi | 83% | 2927 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,856 psi | 64% | 2720 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,686 psi | 73% | 2828 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 37,855 psi | 62% | 2730 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,356 psi | 81% | 2933 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 45,440 psi | 75% | 2963 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 51,024 psi | 84% | 2920 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,279 psi | 69% | 2776 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 40,524 psi | 67% | 2759 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 32,619 psi | 54% | 2595 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 51,590 psi | 85% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,220 psi | 68% | 2808 fps | 95.1% |
| Norma MRP | 72.9 gr | 86% | 37,507 psi | 62% | 2818 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 39,262 psi | 64% | 2776 fps | 98.8% |
| Ramshot Grand | <<locked>> | 94% | 45,295 psi | 74% | 2969 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 38,058 psi | 62% | 2762 fps | 97% |
| Ramshot Magnum | <<locked>> | 92% | 37,608 psi | 62% | 2776 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 46% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,661 psi | 82% | 2927 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,267 psi | 76% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,407 psi | 65% | 2802 fps | 98.6% |
| ReloadSwiss RS 70 | 69.2 gr | 80% | 38,029 psi | 62% | 2808 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,318 psi | 61% | 2844 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 46,644 psi | 77% | 2874 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,208 psi | 74% | 2864 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 39,668 psi | 65% | 2795 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 43,337 psi | 71% | 2799 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,279 psi | 69% | 2776 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 51,024 psi | 84% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,524 psi | 67% | 2759 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,776 psi | 78% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,413 psi | 78% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,307 psi | 68% | 2717 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,018 psi | 69% | 2851 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 46,818 psi | 77% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,487 psi | 81% | 2910 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,708 psi | 59% | 2730 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,840 psi | 62% | 2723 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 44,715 psi | 73% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,669 psi | 67% | 2776 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 39,769 psi | 65% | 2759 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 51,590 psi | 85% | 2897 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,118 psi | 66% | 2776 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 31,314 psi | 51% | 2615 fps | 97.2% |
| Vihtavuori N560 | <<locked>> | 92% | 46,630 psi | 77% | 3002 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 98% | 45,730 psi | 75% | 2969 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,668 psi | 65% | 2740 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,510 psi | 68% | 2831 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,976 psi | 41% | 2503 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,583 psi | 70% | 2825 fps | 95.8% |
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 | 165gr | Remington PSP Core-Lokt. Alliant Reloder-26 delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,192 fps. ADI AR 2217 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 54–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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, ReloadSwiss RS 70 rank at the top here: for .300 Blaser Mag. with the .308 | 165gr | Remington PSP Core-Lokt they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.