Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 152gr | Hasler ARIETE bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 57,696 psi | 90% | 3077 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,768 psi | 89% | 3192 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 86% | 55,550 psi | 87% | 3117 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 57,682 psi | 90% | 3192 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 98% | 56,115 psi | 88% | 3163 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 3202 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,811 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 55,071 psi | 86% | 3104 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 54,070 psi | 85% | 3120 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 55,825 psi | 87% | 3084 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 56,130 psi | 88% | 3159 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,405 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 53,664 psi | 84% | 3186 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,708 psi | 86% | 3087 fps | 97.8% |
| Bofors RP15 | <<locked>> | 92% | 57,261 psi | 90% | 3173 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 55,738 psi | 87% | 3173 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 54,070 psi | 85% | 3120 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 94% | 53,693 psi | 84% | 3123 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 56,782 psi | 89% | 3120 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 55,709 psi | 87% | 3104 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 55,767 psi | 87% | 3018 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 55,129 psi | 86% | 3248 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1982 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,389 psi | 85% | 3035 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 54,737 psi | 86% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,392 psi | 90% | 3100 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 55,927 psi | 88% | 3169 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,792 psi | 78% | 3087 fps | 99.3% |
| Lovex S070 | <<locked>> | 82% | 56,405 psi | 88% | 3064 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,506 psi | 87% | 3045 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,390 psi | 87% | 3094 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 50,691 psi | 79% | 3114 fps | 100% |
| Norma MRP | <<locked>> | 86% | 54,056 psi | 85% | 3136 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,405 psi | 88% | 3081 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 57,087 psi | 89% | 3196 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 55,317 psi | 87% | 3087 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,579 psi | 87% | 3120 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,450 psi | 60% | 2031 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,232 psi | 90% | 3156 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 55,985 psi | 88% | 3238 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 55,100 psi | 86% | 3196 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 86% | 56,101 psi | 88% | 3084 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 86% | 54,665 psi | 86% | 3094 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 82% | 56,405 psi | 88% | 3064 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,840 psi | 89% | 3015 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,273 psi | 85% | 3091 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 57,682 psi | 90% | 3077 fps | 99.5% |
| Somchem S365 | <<locked>> | 84% | 57,667 psi | 90% | 3081 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 54,940 psi | 86% | 3061 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 55,056 psi | 86% | 3048 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 53,867 psi | 84% | 3058 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 82% | 57,014 psi | 89% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 53,969 psi | 85% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,653 psi | 90% | 3205 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 92% | 54,389 psi | 85% | 3130 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 96% | 55,869 psi | 88% | 3199 fps | 99% |
| Vihtavuori N570 | <<locked>> | 98% | 56,884 psi | 89% | 3264 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,551 psi | 90% | 3015 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 55,622 psi | 87% | 3176 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 54,998 psi | 86% | 3058 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 40,828 psi | 64% | 2782 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 80% | 42,569 psi | 67% | 2917 fps | 96.5% |
| ADI AR 2209 | <<locked>> | 80% | 45,237 psi | 71% | 2930 fps | 99% |
| ADI AR 2213 | <<locked>> | 80% | 40,553 psi | 64% | 2861 fps | 97% |
| ADI AR 2217 | <<locked>> | 84% | 34,345 psi | 54% | 2703 fps | 95% |
| ADI AR 2218 | <<locked>> | 98% | 48,617 psi | 76% | 3123 fps | 96.3% |
| ADI AR 2225 | <<locked>> | 82% | 29,240 psi | 46% | 2598 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,040 psi | 82% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,179 psi | 71% | 2920 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,133 psi | 64% | 2867 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,711 psi | 62% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,287 psi | 54% | 2733 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,918 psi | 70% | 2979 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 46,064 psi | 72% | 3035 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 45,078 psi | 71% | 2900 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 38,145 psi | 60% | 2795 fps | 97.4% |
| Bofors RP30 | <<locked>> | 82% | 34,127 psi | 53% | 2717 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 41,133 psi | 64% | 2867 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 82% | 35,012 psi | 55% | 2723 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 80% | 43,062 psi | 67% | 2861 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,395 psi | 66% | 2848 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,950 psi | 77% | 2913 fps | 100% |
| Hodgdon Retumbo | 71.4 gr | 80% | 33,475 psi | 52% | 2766 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 44% | 1775 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,937 psi | 80% | 2976 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 51,155 psi | 80% | 2979 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,295 psi | 69% | 2858 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 80% | 39,160 psi | 61% | 2838 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 90% | 34,998 psi | 55% | 2759 fps | 95.4% |
| Lovex S070 | <<locked>> | 80% | 52,837 psi | 83% | 3005 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,969 psi | 55% | 2648 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 51,764 psi | 81% | 3031 fps | 99.7% |
| Norma 217 | <<locked>> | 86% | 30,647 psi | 48% | 2657 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 43,613 psi | 68% | 2943 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 52,721 psi | 83% | 3022 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,102 psi | 61% | 2848 fps | 97% |
| Ramshot Hunter | <<locked>> | 80% | 51,735 psi | 81% | 3028 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,882 psi | 55% | 2710 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 45% | 1818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,171 psi | 83% | 3094 fps | 100% |
| ReloadSwiss RS 76 | 76.4 gr | 80% | 32,605 psi | 51% | 2733 fps | 97.5% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 40,306 psi | 63% | 2900 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 46,180 psi | 72% | 2904 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 80% | 44,730 psi | 70% | 2910 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 52,837 psi | 83% | 3005 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,200 psi | 83% | 2956 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,411 psi | 70% | 2907 fps | 99% |
| Somchem S361 | <<locked>> | 80% | 47,021 psi | 74% | 2887 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 50,357 psi | 79% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,092 psi | 71% | 2884 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 80% | 39,247 psi | 62% | 2749 fps | 98.3% |
| Vihtavuori N170 | <<locked>> | 92% | 50,343 psi | 79% | 2992 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 53,417 psi | 84% | 3018 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,193 psi | 69% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,424 psi | 68% | 2936 fps | 97.3% |
| Vihtavuori N565 | <<locked>> | 82% | 38,218 psi | 60% | 2799 fps | 96% |
| Vihtavuori N568 | <<locked>> | 88% | 41,568 psi | 65% | 2917 fps | 95.7% |
| Vihtavuori N570 | 87 gr | 94% | 49,066 psi | 77% | 3117 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,679 psi | 84% | 2959 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,478 psi | 59% | 2854 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,437 psi | 65% | 2805 fps | 98.3% |
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 68 powders for 7-.300 Norma Mag. loaded with the .284 | 152gr | Hasler ARIETE. Vihtavuori N570 delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,264 fps. Accurate 8700 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, 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. Hodgdon Retumbo, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for 7-.300 Norma Mag. with the .284 | 152gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, IMR 7977 Enduron, Lovex D100 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.