Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 120gr | Osprey Virtus bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Bofors RP5 and Winchester StaBALL HD.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,592 psi | 86% | 3343 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 55,550 psi | 87% | 3386 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,507 psi | 89% | 3514 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 94% | 57,537 psi | 90% | 3510 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 56,710 psi | 89% | 3356 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,014 psi | 89% | 3455 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 54,824 psi | 86% | 3448 fps | 98% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 3317 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,859 psi | 69% | 3264 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,101 psi | 89% | 3445 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,884 psi | 89% | 3461 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,012 psi | 85% | 3409 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,391 psi | 88% | 3435 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,752 psi | 86% | 3445 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,898 psi | 88% | 3419 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 3481 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,666 psi | 89% | 3514 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 57,624 psi | 90% | 3491 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,430 psi | 81% | 3402 fps | 98% |
| Bofors RP5 | <<locked>> | 94% | 54,752 psi | 86% | 3445 fps | 99% |
| Bofors RP7 | <<locked>> | 84% | 54,476 psi | 85% | 3330 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 3428 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 57,638 psi | 90% | 3451 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 56,550 psi | 89% | 3406 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 54,607 psi | 86% | 3376 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,435 psi | 90% | 3428 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,101 psi | 89% | 3369 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,462 psi | 85% | 3556 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 54,447 psi | 85% | 3419 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 58% | 2198 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,405 psi | 88% | 3376 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,101 psi | 88% | 3363 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 56,144 psi | 88% | 3379 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,738 psi | 87% | 3366 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 96% | 56,449 psi | 88% | 3491 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 56,623 psi | 89% | 3360 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,737 psi | 86% | 3346 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3360 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,522 psi | 90% | 3435 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 39,247 psi | 62% | 3166 fps | 96.7% |
| Norma MRP | <<locked>> | 92% | 54,737 psi | 86% | 3468 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 54,186 psi | 85% | 3369 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,450 psi | 90% | 3514 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 56,927 psi | 89% | 3435 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,927 psi | 88% | 3432 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 59% | 2244 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,624 psi | 90% | 3461 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,043 psi | 88% | 3412 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,491 psi | 85% | 3445 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3550 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,415 psi | 79% | 3406 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 55,579 psi | 87% | 3337 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,302 psi | 85% | 3350 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 92% | 55,825 psi | 87% | 3422 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 84% | 54,476 psi | 85% | 3330 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,623 psi | 89% | 3360 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,737 psi | 86% | 3346 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,566 psi | 90% | 3406 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,651 psi | 87% | 3202 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,956 psi | 88% | 3304 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,390 psi | 87% | 3415 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 55,259 psi | 87% | 3330 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,043 psi | 88% | 3337 fps | 97.6% |
| Somchem S365 | <<locked>> | 88% | 54,723 psi | 86% | 3376 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,333 psi | 88% | 3389 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 56,811 psi | 89% | 3301 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,985 psi | 88% | 3363 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,159 psi | 88% | 3366 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 55,288 psi | 87% | 3366 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,157 psi | 85% | 3386 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,592 psi | 86% | 3461 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 98% | 54,418 psi | 85% | 3428 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,898 psi | 88% | 3314 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,041 psi | 85% | 3386 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,809 psi | 84% | 3501 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,637 psi | 89% | 3386 fps | 99.1% |
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% | 33,141 psi | 52% | 2867 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 44,846 psi | 70% | 3186 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 45,281 psi | 71% | 3281 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 90% | 49,763 psi | 78% | 3360 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 53,229 psi | 83% | 3297 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,292 psi | 63% | 3100 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 88% | 44,295 psi | 69% | 3228 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 42,685 psi | 67% | 3173 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 35,621 psi | 56% | 3041 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 40,683 psi | 64% | 3104 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,221 psi | 68% | 3202 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,314 psi | 79% | 3340 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,277 psi | 63% | 3094 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 41,437 psi | 65% | 3159 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,010 psi | 50% | 2907 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,995 psi | 50% | 2930 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,172 psi | 55% | 3058 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 41,046 psi | 64% | 3150 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 41,481 psi | 65% | 3182 fps | 95.2% |
| Bofors RP5 | 76.8 gr | 86% | 41,437 psi | 65% | 3159 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 47,776 psi | 75% | 3202 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 92% | 40,828 psi | 64% | 3130 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 46,920 psi | 74% | 3248 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 49,472 psi | 78% | 3271 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 47,601 psi | 75% | 3238 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,485 psi | 73% | 3215 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,582 psi | 64% | 3064 fps | 99.9% |
| Hodgdon Retumbo | 79.9 gr | 90% | 38,363 psi | 60% | 3166 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,702 psi | 73% | 3268 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,499 psi | 43% | 1972 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,453 psi | 68% | 3120 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,356 psi | 77% | 3235 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 42,873 psi | 67% | 3127 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,803 psi | 72% | 3166 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 90% | 45,643 psi | 72% | 3271 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 46,702 psi | 73% | 3173 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 45,063 psi | 71% | 3156 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 32,489 psi | 51% | 2848 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 43,381 psi | 68% | 3153 fps | 96.2% |
| Norma 217 | <<locked>> | 98% | 36,463 psi | 57% | 3091 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 34,969 psi | 55% | 3018 fps | 95% |
| Norma URP | <<locked>> | 80% | 44,295 psi | 69% | 3179 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 42,409 psi | 66% | 3205 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 43,163 psi | 68% | 3163 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 37,840 psi | 59% | 3054 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 44% | 2018 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,563 psi | 84% | 3396 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,107 psi | 71% | 3209 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,424 psi | 68% | 3225 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,186 psi | 55% | 3058 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,557 psi | 73% | 3320 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 52,054 psi | 82% | 3278 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 44,541 psi | 70% | 3150 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 39,566 psi | 62% | 3077 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,776 psi | 75% | 3202 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,702 psi | 73% | 3173 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 45,063 psi | 71% | 3156 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,621 psi | 84% | 3340 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,185 psi | 82% | 3146 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,803 psi | 72% | 3110 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 39,218 psi | 61% | 3071 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 51,822 psi | 81% | 3271 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,672 psi | 72% | 3133 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 41,249 psi | 65% | 3127 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,376 psi | 59% | 2986 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 49,734 psi | 78% | 3186 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,658 psi | 72% | 3173 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 37,188 psi | 58% | 2972 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 45,150 psi | 71% | 3176 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 35,926 psi | 56% | 2999 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 88% | 47,210 psi | 74% | 3307 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 43,859 psi | 69% | 3209 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,078 psi | 71% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,108 psi | 74% | 3251 fps | 98.7% |
| Winchester StaBALL HD | 72.9 gr | 80% | 28,326 psi | 44% | 2897 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,566 psi | 62% | 3038 fps | 95.2% |
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 76 powders for 7-.300 Norma Mag. loaded with the .284 | 120gr | Osprey Virtus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,556 fps; across all powders the maximum-charge window runs from 2,198 fps to 3,556 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 120.0 gr projectile in 0.284" calls for a 1:11.5 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. Hodgdon Retumbo, Bofors RP5, Winchester StaBALL HD rank at the top here: for 7-.300 Norma Mag. with the .284 | 120gr | Osprey Virtus 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.