Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 165gr | Hornady InterBond bullet and 78 powders. The key underlying parameters are shown in the table above.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,724 psi | 87% | 3045 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 57,334 psi | 90% | 3091 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,334 psi | 90% | 3199 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 94% | 54,331 psi | 85% | 3133 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 82% | 55,056 psi | 86% | 2999 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,404 psi | 85% | 3081 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 96% | 55,883 psi | 88% | 3140 fps | 97.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,688 psi | 73% | 2956 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,582 psi | 65% | 2910 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,578 psi | 86% | 3077 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,202 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,447 psi | 85% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,579 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,609 psi | 90% | 3130 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,666 psi | 87% | 3136 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,521 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,246 psi | 90% | 3205 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,636 psi | 86% | 3117 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 57,363 psi | 90% | 3041 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,356 psi | 76% | 3031 fps | 97% |
| Bofors RP5 | <<locked>> | 96% | 55,666 psi | 87% | 3136 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 56,231 psi | 88% | 3031 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 3051 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 57,464 psi | 90% | 3061 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,332 psi | 87% | 3084 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 54,607 psi | 86% | 3041 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 94% | 55,796 psi | 87% | 3074 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,737 psi | 86% | 3058 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,824 psi | 86% | 3012 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,314 psi | 80% | 3169 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 55,869 psi | 88% | 3123 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 58% | 1936 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,346 psi | 85% | 3015 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,740 psi | 90% | 3058 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 57,493 psi | 90% | 3077 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,884 psi | 89% | 3061 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 57,363 psi | 90% | 3179 fps | 98.2% |
| Lovex S065 | <<locked>> | 86% | 54,897 psi | 86% | 3002 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 56,318 psi | 88% | 3048 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,229 psi | 83% | 3005 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 55,085 psi | 86% | 3068 fps | 98.6% |
| Norma MRP | <<locked>> | 94% | 55,434 psi | 87% | 3159 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 55,579 psi | 87% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,128 psi | 85% | 3133 fps | 98% |
| Ramshot Hunter | <<locked>> | 88% | 54,520 psi | 85% | 3071 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,565 psi | 89% | 3130 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,681 psi | 59% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,043 psi | 89% | 3045 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,882 psi | 86% | 3094 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,348 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,709 psi | 87% | 3140 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 3166 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 57,638 psi | 90% | 3038 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,782 psi | 87% | 3051 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 57,101 psi | 89% | 3117 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 56,231 psi | 88% | 3031 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,897 psi | 86% | 3002 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 56,318 psi | 88% | 3048 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,477 psi | 87% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,450 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,201 psi | 85% | 2949 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,637 psi | 89% | 3114 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 57,276 psi | 90% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,479 psi | 90% | 3041 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 55,811 psi | 87% | 3071 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,595 psi | 90% | 3087 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 54,998 psi | 86% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,624 psi | 90% | 3064 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,087 psi | 89% | 3064 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 56,811 psi | 89% | 3068 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,390 psi | 87% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,361 psi | 87% | 3150 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 3123 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,276 psi | 90% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,535 psi | 87% | 3087 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,693 psi | 84% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,882 psi | 84% | 3022 fps | 98.5% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 32,343 psi | 51% | 2569 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 43,511 psi | 68% | 2848 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 46,485 psi | 73% | 2999 fps | 96% |
| Accurate MAGPRO | <<locked>> | 92% | 50,560 psi | 79% | 3061 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 51,750 psi | 81% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,713 psi | 65% | 2831 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 90% | 45,469 psi | 71% | 2940 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 98% | 43,729 psi | 69% | 2890 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 36,463 psi | 57% | 2776 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 42,076 psi | 66% | 2831 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,823 psi | 83% | 2969 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,756 psi | 65% | 2858 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,196 psi | 76% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,655 psi | 65% | 2825 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,697 psi | 62% | 2818 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,053 psi | 49% | 2598 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,009 psi | 49% | 2615 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,707 psi | 53% | 2730 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 41,959 psi | 66% | 2871 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 53,650 psi | 84% | 2986 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,018 psi | 66% | 2900 fps | 95.1% |
| Bofors RP5 | <<locked>> | 86% | 39,697 psi | 62% | 2818 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,557 psi | 73% | 2854 fps | 98% |
| Hodgdon H1000 | <<locked>> | 94% | 41,887 psi | 66% | 2854 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 53,795 psi | 84% | 3002 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,324 psi | 71% | 2900 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 47,906 psi | 75% | 2920 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 48,660 psi | 76% | 2946 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,732 psi | 75% | 2930 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,320 psi | 62% | 2736 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,305 psi | 62% | 2887 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 44,614 psi | 70% | 2917 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 43% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,163 psi | 66% | 2782 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,993 psi | 75% | 2887 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 41,582 psi | 65% | 2795 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 47,210 psi | 74% | 2887 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 46,775 psi | 73% | 2979 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 45,556 psi | 71% | 2835 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 43,874 psi | 69% | 2818 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 33,895 psi | 53% | 2608 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,916 psi | 66% | 2812 fps | 95.5% |
| Norma MRP | <<locked>> | 82% | 36,100 psi | 57% | 2759 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 42,888 psi | 67% | 2838 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 43,468 psi | 68% | 2923 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 41,640 psi | 65% | 2825 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 38,943 psi | 61% | 2792 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 44% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,548 psi | 84% | 2986 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,126 psi | 80% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,424 psi | 68% | 2867 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,698 psi | 65% | 2877 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,143 psi | 57% | 2795 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 50,618 psi | 79% | 2930 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,050 psi | 72% | 2871 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 40,828 psi | 64% | 2805 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,557 psi | 73% | 2854 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,556 psi | 71% | 2835 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 80% | 43,874 psi | 69% | 2818 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,808 psi | 81% | 2986 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,836 psi | 80% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,585 psi | 70% | 2779 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,466 psi | 63% | 2802 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 79% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,123 psi | 74% | 2861 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 39,740 psi | 62% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,812 psi | 61% | 2730 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,341 psi | 76% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,208 psi | 69% | 2835 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 38,305 psi | 60% | 2710 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,729 psi | 69% | 2838 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 34,853 psi | 55% | 2684 fps | 98.3% |
| Vihtavuori N560 | <<locked>> | 90% | 48,138 psi | 75% | 3015 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 44,686 psi | 70% | 2927 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,337 psi | 68% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,484 psi | 71% | 2904 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,514 psi | 43% | 2585 fps | 97.9% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,814 psi | 64% | 2772 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 78 powders for .300 Norma Mag. loaded with the .308 | 165gr | Hornady InterBond. Alliant Reloder-26 delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,205 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.