Load Specifications
Load data in caliber .300 Norma Mag. with .309 | 170gr | Reichenberg HDB Universal bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Winchester StaBALL HD and Norma MRP.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,695 psi | 87% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,392 psi | 90% | 3054 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,638 psi | 90% | 3169 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 94% | 54,607 psi | 86% | 3104 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 55,085 psi | 86% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,752 psi | 86% | 3054 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 56,275 psi | 88% | 3114 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,775 psi | 73% | 2930 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,597 psi | 65% | 2881 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,868 psi | 86% | 3048 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,868 psi | 86% | 3048 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,347 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,592 psi | 86% | 3058 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,898 psi | 88% | 3074 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,172 psi | 85% | 3038 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,985 psi | 88% | 3107 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,898 psi | 89% | 3081 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3081 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,696 psi | 90% | 3176 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,897 psi | 86% | 3087 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 57,377 psi | 90% | 3005 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,544 psi | 76% | 3002 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 55,985 psi | 88% | 3107 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 56,391 psi | 88% | 3002 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 3025 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 57,363 psi | 90% | 3025 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,579 psi | 87% | 3054 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,665 psi | 86% | 3009 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 56,115 psi | 88% | 3048 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,056 psi | 86% | 3031 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,839 psi | 86% | 2976 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3140 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 56,231 psi | 88% | 3094 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1909 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,563 psi | 86% | 2986 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,592 psi | 86% | 2972 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 57,667 psi | 90% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,188 psi | 90% | 3035 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 53,853 psi | 84% | 3087 fps | 97.9% |
| Lovex S065 | <<locked>> | 86% | 54,940 psi | 86% | 2969 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,420 psi | 88% | 3015 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 2969 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 55,390 psi | 87% | 3038 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 55,796 psi | 87% | 3130 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 55,796 psi | 87% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,476 psi | 85% | 3107 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 54,752 psi | 86% | 3038 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,985 psi | 89% | 3104 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,232 psi | 90% | 3015 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,317 psi | 87% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,537 psi | 90% | 3081 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,883 psi | 88% | 3107 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 3140 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 57,435 psi | 90% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,072 psi | 88% | 3025 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 57,174 psi | 90% | 3084 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 56,391 psi | 88% | 3002 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,940 psi | 86% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,420 psi | 88% | 3015 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,506 psi | 87% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,638 psi | 90% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,201 psi | 85% | 2920 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,724 psi | 89% | 3081 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 57,174 psi | 90% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,682 psi | 90% | 3012 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 56,101 psi | 88% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,041 psi | 85% | 2999 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 54,911 psi | 86% | 2917 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,099 psi | 85% | 2972 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,334 psi | 90% | 3035 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 56,971 psi | 89% | 3035 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,506 psi | 87% | 3054 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,709 psi | 87% | 3120 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3094 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,595 psi | 90% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,796 psi | 87% | 3058 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,317 psi | 85% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,099 psi | 85% | 2995 fps | 98.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 31,879 psi | 50% | 2530 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 43,323 psi | 68% | 2815 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 43,265 psi | 68% | 2897 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 90% | 47,311 psi | 74% | 2969 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 51,764 psi | 81% | 2910 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,957 psi | 61% | 2736 fps | 95% |
| ADI AR 2213 | <<locked>> | 90% | 45,600 psi | 71% | 2913 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 43,772 psi | 69% | 2864 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 96% | 36,332 psi | 57% | 2746 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 39,305 psi | 62% | 2740 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 39,305 psi | 62% | 2740 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,910 psi | 83% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,887 psi | 66% | 2828 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,399 psi | 76% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,928 psi | 61% | 2733 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,552 psi | 62% | 2785 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,835 psi | 48% | 2566 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,661 psi | 48% | 2579 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,518 psi | 53% | 2694 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 39,146 psi | 61% | 2776 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 53,606 psi | 84% | 2949 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,047 psi | 66% | 2867 fps | 95.5% |
| Bofors RP5 | <<locked>> | 86% | 39,552 psi | 62% | 2785 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 46,514 psi | 73% | 2825 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 41,930 psi | 66% | 2828 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 53,650 psi | 84% | 2966 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,208 psi | 71% | 2867 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,037 psi | 75% | 2890 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 45,556 psi | 71% | 2858 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,906 psi | 75% | 2904 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,305 psi | 62% | 2707 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,276 psi | 62% | 2864 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 44,788 psi | 70% | 2887 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,076 psi | 66% | 2749 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,109 psi | 75% | 2858 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 41,336 psi | 65% | 2759 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,309 psi | 69% | 2799 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 43,772 psi | 69% | 2887 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,440 psi | 71% | 2802 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 43,613 psi | 68% | 2782 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 31,256 psi | 49% | 2513 fps | 95% |
| Norma 204 | <<locked>> | 80% | 41,945 psi | 66% | 2782 fps | 95.9% |
| Norma MRP | 75.6 gr | 82% | 35,984 psi | 56% | 2726 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 42,728 psi | 67% | 2805 fps | 99.5% |
| Ramshot Grand | 82.3 gr | 90% | 43,598 psi | 68% | 2894 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,655 psi | 65% | 2795 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 88% | 36,027 psi | 56% | 2694 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 44% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,432 psi | 84% | 2949 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,488 psi | 81% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,395 psi | 68% | 2835 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,756 psi | 65% | 2848 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,955 psi | 56% | 2769 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 50,314 psi | 79% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,134 psi | 68% | 2779 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 38,029 psi | 60% | 2710 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 46,514 psi | 73% | 2825 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,440 psi | 71% | 2802 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 43,613 psi | 68% | 2782 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,953 psi | 81% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,966 psi | 80% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,498 psi | 70% | 2746 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,466 psi | 63% | 2772 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 79% | 2890 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,166 psi | 74% | 2831 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 39,581 psi | 62% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,085 psi | 57% | 2635 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,167 psi | 75% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,237 psi | 69% | 2802 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 38,247 psi | 60% | 2680 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 43,540 psi | 68% | 2802 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 34,461 psi | 54% | 2644 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 88% | 45,092 psi | 71% | 2920 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 44,686 psi | 70% | 2897 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,439 psi | 68% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,382 psi | 71% | 2867 fps | 98.5% |
| Winchester StaBALL HD | 73 gr | 80% | 27,195 psi | 43% | 2549 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,640 psi | 64% | 2740 fps | 95.7% |
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 79 powders for .300 Norma Mag. loaded with the .309 | 170gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,176 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 170.0 gr projectile in 0.309" calls for a 1:12.5 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. Ramshot Grand, Winchester StaBALL HD, Norma MRP rank at the top here: for .300 Norma Mag. with the .309 | 170gr | Reichenberg HDB Universal 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.