Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 161gr | Peregrine VLR-4 bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo 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>> | 88% | 55,216 psi | 87% | 2963 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 57,305 psi | 90% | 3133 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 86% | 54,186 psi | 85% | 3074 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 86% | 56,811 psi | 89% | 3061 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 55,216 psi | 87% | 3074 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 98% | 57,566 psi | 90% | 3110 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 53,925 psi | 85% | 3163 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 56,246 psi | 88% | 3130 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,927 psi | 89% | 3054 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 56,927 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 57,130 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 56,318 psi | 88% | 3048 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 55,521 psi | 87% | 3068 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 57,290 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 57,508 psi | 90% | 3100 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 54,012 psi | 85% | 3058 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 55,405 psi | 87% | 3143 fps | 98.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3048 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 55,956 psi | 88% | 3035 fps | 98.5% |
| Bofors RP15 | <<locked>> | 90% | 54,737 psi | 86% | 3054 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 57,174 psi | 90% | 3120 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 55,521 psi | 87% | 3068 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 55,288 psi | 87% | 3074 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 54,288 psi | 85% | 3002 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 57,087 psi | 89% | 3048 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 57,101 psi | 89% | 2959 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 56,637 psi | 89% | 3196 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,681 psi | 59% | 1926 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 55,390 psi | 87% | 2972 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 56,057 psi | 88% | 2972 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 54,882 psi | 86% | 2982 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 90% | 57,334 psi | 90% | 3117 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 51,271 psi | 80% | 3041 fps | 99.7% |
| Lovex S070 | <<locked>> | 82% | 57,624 psi | 90% | 3005 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 56,739 psi | 89% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 82% | 56,782 psi | 89% | 3038 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 86% | 55,637 psi | 87% | 3084 fps | 100% |
| Norma URP | <<locked>> | 82% | 57,725 psi | 90% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,549 psi | 85% | 3077 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 56,739 psi | 89% | 3031 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 57,116 psi | 90% | 3064 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,508 psi | 60% | 1969 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 57,653 psi | 90% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 56,753 psi | 89% | 3146 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 57,479 psi | 90% | 3028 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 86% | 55,927 psi | 88% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 57,624 psi | 90% | 3005 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 55,535 psi | 87% | 3031 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 54,955 psi | 86% | 2959 fps | 99.5% |
| Somchem S365 | <<locked>> | 82% | 55,201 psi | 87% | 2963 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 56,246 psi | 88% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 56,289 psi | 88% | 2992 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 55,158 psi | 86% | 3012 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 86% | 55,245 psi | 87% | 2999 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 55,158 psi | 86% | 3087 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 55,709 psi | 87% | 3077 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 96% | 57,305 psi | 90% | 3150 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 96% | 54,621 psi | 86% | 3150 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 90% | 57,450 psi | 90% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 56,231 psi | 88% | 3005 fps | 100% |
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% | 41,930 psi | 66% | 2736 fps | 99.9% |
| Accurate High Country | <<locked>> | 80% | 46,253 psi | 72% | 2933 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 80% | 43,729 psi | 69% | 2874 fps | 97.3% |
| ADI AR 2209 | <<locked>> | 80% | 46,340 psi | 73% | 2877 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 41,495 psi | 65% | 2815 fps | 97.8% |
| ADI AR 2217 | <<locked>> | 82% | 33,025 psi | 52% | 2605 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 96% | 46,456 psi | 73% | 3009 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 28,065 psi | 44% | 2500 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,702 psi | 73% | 2877 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,702 psi | 73% | 2877 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 53,476 psi | 84% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,267 psi | 73% | 2871 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,105 psi | 66% | 2818 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,973 psi | 64% | 2756 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,288 psi | 55% | 2690 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,267 psi | 73% | 2930 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 43,932 psi | 69% | 2923 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 46,731 psi | 73% | 2976 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 43,091 psi | 68% | 2789 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 39,160 psi | 61% | 2749 fps | 98.1% |
| Bofors RP30 | <<locked>> | 80% | 32,735 psi | 51% | 2615 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 42,105 psi | 66% | 2818 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 80% | 33,504 psi | 53% | 2621 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 80% | 44,150 psi | 69% | 2815 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,294 psi | 68% | 2799 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,024 psi | 78% | 2854 fps | 100% |
| Hodgdon Retumbo | 70.1 gr | 80% | 34,505 psi | 54% | 2730 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,210 psi | 44% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 51,996 psi | 81% | 2917 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 52,330 psi | 82% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,237 psi | 71% | 2808 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 80% | 40,277 psi | 63% | 2795 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 88% | 33,750 psi | 53% | 2664 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 53,911 psi | 84% | 2946 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,998 psi | 56% | 2608 fps | 99.3% |
| Norma 204 | <<locked>> | 80% | 53,011 psi | 83% | 2976 fps | 99.9% |
| Norma 217 | <<locked>> | 84% | 29,501 psi | 46% | 2562 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 44,773 psi | 70% | 2894 fps | 99.9% |
| Norma URP | <<locked>> | 80% | 53,896 psi | 84% | 2959 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,234 psi | 63% | 2805 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 80% | 53,026 psi | 83% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,100 psi | 57% | 2677 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 45% | 1762 fps | 100% |
| ReloadSwiss RS 76 | 75 gr | 80% | 33,605 psi | 53% | 2703 fps | 98.5% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 38,580 psi | 60% | 2792 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 47,166 psi | 74% | 2851 fps | 99% |
| Rottweil R 905 | <<locked>> | 80% | 45,847 psi | 72% | 2861 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 53,911 psi | 84% | 2946 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,513 psi | 71% | 2854 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 48,022 psi | 75% | 2838 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 51,634 psi | 81% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 46,021 psi | 72% | 2828 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 40,248 psi | 63% | 2703 fps | 98.9% |
| Vihtavuori N170 | <<locked>> | 90% | 48,124 psi | 75% | 2884 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 45,310 psi | 71% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,541 psi | 70% | 2887 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 80% | 36,724 psi | 58% | 2694 fps | 96.1% |
| Vihtavuori N568 | <<locked>> | 86% | 39,842 psi | 62% | 2812 fps | 95.8% |
| Vihtavuori N570 | 81.8 gr | 90% | 43,700 psi | 68% | 2933 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,986 psi | 61% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,540 psi | 67% | 2762 fps | 98.9% |
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 61 powders for 7-.300 Norma Mag. loaded with the .284 | 161gr | Peregrine VLR-4. Hodgdon Retumbo delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,196 fps. ADI AR 2218 gives the best case fill at 100 %, and 61 of the 61 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 161.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7-.300 Norma Mag. with the .284 | 161gr | Peregrine VLR-4 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.