Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 145gr | SUS-TAC HPT bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Hodgdon H414.
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 2700 | <<locked>> | 82% | 56,579 psi | 89% | 3173 fps | 98.6% |
| Accurate 3100 | <<locked>> | 98% | 56,289 psi | 88% | 3222 fps | 99.6% |
| Accurate 4064 | <<locked>> | 82% | 56,289 psi | 88% | 3163 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,969 psi | 85% | 3215 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 55,912 psi | 88% | 3192 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,853 psi | 86% | 3258 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 98% | 56,362 psi | 88% | 3314 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,043 psi | 89% | 3219 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,072 psi | 89% | 3241 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,752 psi | 86% | 3281 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,028 psi | 88% | 3301 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,476 psi | 85% | 3245 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,883 psi | 88% | 3310 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 3294 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,110 psi | 77% | 3219 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 96% | 57,479 psi | 90% | 3389 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3287 fps | 97.8% |
| Bofors RP3 | <<locked>> | 82% | 54,360 psi | 85% | 3179 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,883 psi | 88% | 3310 fps | 98.1% |
| Bofors RP7 | <<locked>> | 88% | 57,159 psi | 90% | 3219 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 82% | 54,505 psi | 85% | 3192 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 55,999 psi | 88% | 3271 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 55,230 psi | 87% | 3225 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 96% | 56,637 psi | 89% | 3255 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,390 psi | 87% | 3232 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,100 psi | 86% | 3199 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3255 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 88% | 56,652 psi | 89% | 3307 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 57% | 2067 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,216 psi | 87% | 3173 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,580 psi | 90% | 3209 fps | 99.2% |
| IMR 4350 | <<locked>> | 90% | 54,998 psi | 86% | 3196 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,129 psi | 86% | 3189 fps | 98.9% |
| IMR 4831 | <<locked>> | 90% | 54,462 psi | 85% | 3205 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,653 psi | 90% | 3238 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 98% | 53,867 psi | 84% | 3281 fps | 96.4% |
| Lovex S062 | <<locked>> | 82% | 55,666 psi | 87% | 3169 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,477 psi | 87% | 3186 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 57,043 psi | 89% | 3235 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 3114 fps | 98.9% |
| Norma 203B | <<locked>> | 82% | 56,362 psi | 88% | 3225 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,869 psi | 88% | 3248 fps | 97.7% |
| Norma MRP | <<locked>> | 96% | 55,666 psi | 87% | 3337 fps | 99.1% |
| Norma URP | <<locked>> | 90% | 56,115 psi | 88% | 3255 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,479 psi | 90% | 3251 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,592 psi | 86% | 3304 fps | 97% |
| Ramshot Hunter | <<locked>> | 90% | 55,085 psi | 86% | 3255 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,895 psi | 83% | 3235 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 59% | 2116 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,360 psi | 85% | 3173 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,434 psi | 87% | 3294 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,085 psi | 85% | 3235 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,159 psi | 88% | 3327 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,631 psi | 76% | 3251 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 57,435 psi | 90% | 3179 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,592 psi | 86% | 3176 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,449 psi | 88% | 3228 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 57,566 psi | 90% | 3297 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 57,159 psi | 90% | 3219 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,477 psi | 87% | 3186 fps | 99.6% |
| Shooters World Precision | <<locked>> | 82% | 55,666 psi | 87% | 3169 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,043 psi | 89% | 3235 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,043 psi | 88% | 3235 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,085 psi | 86% | 3054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,114 psi | 86% | 3133 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,087 psi | 89% | 3291 fps | 98.2% |
| Somchem S355 | <<locked>> | 84% | 54,476 psi | 85% | 3173 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 56,144 psi | 88% | 3261 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,375 psi | 85% | 3202 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 55,680 psi | 87% | 3140 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,549 psi | 85% | 3192 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,653 psi | 90% | 3241 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 56,347 psi | 88% | 3143 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,392 psi | 90% | 3255 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,419 psi | 87% | 3264 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,637 psi | 87% | 3320 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,172 psi | 85% | 3150 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,188 psi | 88% | 3271 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,417 psi | 84% | 3373 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,447 psi | 85% | 3196 fps | 97.6% |
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 2700 | <<locked>> | 80% | 52,953 psi | 83% | 3107 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 37,231 psi | 58% | 2841 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 52,808 psi | 83% | 3107 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,915 psi | 64% | 2956 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,255 psi | 77% | 3074 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 45,020 psi | 71% | 3061 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 49,168 psi | 77% | 3173 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,212 psi | 79% | 3104 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,534 psi | 84% | 3182 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,378 psi | 62% | 2966 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,223 psi | 71% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,715 psi | 70% | 3051 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 45,614 psi | 71% | 3110 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,095 psi | 46% | 2680 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 35,360 psi | 55% | 2881 fps | 95.6% |
| Alliant Reloder-26 | 80.7 gr | 82% | 33,765 psi | 53% | 2874 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 44,976 psi | 70% | 3091 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 50,908 psi | 80% | 3117 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 45,614 psi | 71% | 3110 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,295 psi | 69% | 2972 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 51,111 psi | 80% | 3130 fps | 99.6% |
| Hodgdon H414 | 75.2 gr | 80% | 42,743 psi | 67% | 3005 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 45,484 psi | 71% | 3031 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 94% | 52,794 psi | 83% | 3186 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,619 psi | 81% | 3163 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,985 psi | 58% | 2844 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 98% | 44,860 psi | 70% | 3176 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 41,800 psi | 66% | 3012 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1850 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,837 psi | 81% | 3114 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,128 psi | 85% | 3146 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 42,569 psi | 67% | 2949 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,745 psi | 72% | 3005 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 39,102 psi | 61% | 2897 fps | 98% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,865 psi | 80% | 3117 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 50,372 psi | 79% | 3212 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 52,257 psi | 82% | 3114 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,308 psi | 68% | 2949 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 41,611 psi | 65% | 2927 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 35,984 psi | 56% | 2808 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 52,924 psi | 83% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 84% | 45,411 psi | 71% | 3045 fps | 95.2% |
| Norma MRP | 84.1 gr | 88% | 41,814 psi | 66% | 3054 fps | 96% |
| Norma URP | <<locked>> | 80% | 40,393 psi | 63% | 2946 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 53,563 psi | 84% | 3189 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 50,720 psi | 79% | 3228 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 39,334 psi | 62% | 2930 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 94% | 42,177 psi | 66% | 3015 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 44% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,865 psi | 80% | 3107 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,008 psi | 75% | 3169 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,785 psi | 64% | 2972 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,218 psi | 61% | 2976 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 41,916 psi | 66% | 3094 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 80% | 53,896 psi | 84% | 3123 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,892 psi | 75% | 3058 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 49,661 psi | 78% | 3104 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 43,932 psi | 69% | 3031 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,295 psi | 69% | 2972 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,308 psi | 68% | 2949 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 52,257 psi | 82% | 3114 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,611 psi | 65% | 2927 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,197 psi | 77% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,559 psi | 76% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,322 psi | 66% | 2884 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,540 psi | 68% | 3025 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 47,964 psi | 75% | 3054 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 37,043 psi | 58% | 2897 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 41,684 psi | 65% | 2946 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,876 psi | 72% | 2976 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,829 psi | 66% | 2946 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 44,121 psi | 69% | 2992 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 52,953 psi | 83% | 3087 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,321 psi | 65% | 2946 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 32,372 psi | 51% | 2766 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 94% | 51,909 psi | 81% | 3255 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,901 psi | 64% | 2907 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 42,873 psi | 67% | 3009 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 27,557 psi | 43% | 2710 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,077 psi | 69% | 2995 fps | 95% |
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 90 powders for .300 Norma Mag. loaded with the .308 | 145gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,389 fps; across all powders the maximum-charge window runs from 2,067 fps to 3,389 fps. ADI AR 2217 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 145.0 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-23 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. Alliant Reloder-26, Norma MRP, Hodgdon H414 rank at the top here: for .300 Norma Mag. with the .308 | 145gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.