Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 135gr | Atomic 29 FNHP bullet and 83 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 Alliant Reloder-16.
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 2495 | <<locked>> | 82% | 55,970 psi | 88% | 3212 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,696 psi | 90% | 3287 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3327 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 56,507 psi | 89% | 3271 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,360 psi | 85% | 3320 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 56,898 psi | 89% | 3310 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,985 psi | 88% | 3373 fps | 97.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3428 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,927 psi | 89% | 3448 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,186 psi | 85% | 3274 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,462 psi | 85% | 3301 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,535 psi | 87% | 3396 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,043 psi | 89% | 3422 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,201 psi | 87% | 3353 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3419 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3346 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,296 psi | 73% | 3248 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,853 psi | 84% | 3428 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3327 fps | 96.5% |
| Bofors RP3 | <<locked>> | 84% | 55,085 psi | 86% | 3294 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 3419 fps | 97.7% |
| Bofors RP7 | <<locked>> | 88% | 54,462 psi | 85% | 3268 fps | 98% |
| Hodgdon H380 | <<locked>> | 84% | 55,419 psi | 87% | 3307 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 56,826 psi | 89% | 3383 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 88% | 56,420 psi | 88% | 3340 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,796 psi | 87% | 3307 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,000 psi | 89% | 3353 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 53,534 psi | 84% | 3350 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,274 psi | 57% | 2139 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,276 psi | 90% | 3320 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,217 psi | 88% | 3294 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,317 psi | 87% | 3268 fps | 98.5% |
| IMR 4350 | <<locked>> | 92% | 55,854 psi | 88% | 3307 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,333 psi | 88% | 3307 fps | 98.6% |
| IMR 4831 | <<locked>> | 92% | 54,969 psi | 86% | 3314 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 55,869 psi | 88% | 3333 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 57,682 psi | 90% | 3281 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,434 psi | 88% | 3284 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,376 psi | 88% | 3301 fps | 99.5% |
| Lovex S070 | <<locked>> | 90% | 54,273 psi | 85% | 3284 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,688 psi | 73% | 3140 fps | 97.8% |
| Norma 201 | <<locked>> | 82% | 57,566 psi | 90% | 3301 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,290 psi | 90% | 3343 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,029 psi | 89% | 3363 fps | 97.4% |
| Norma MRP | <<locked>> | 98% | 56,478 psi | 89% | 3448 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 57,043 psi | 89% | 3373 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 54,795 psi | 86% | 3310 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3412 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 92% | 55,956 psi | 88% | 3366 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,719 psi | 78% | 3261 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 58% | 2188 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,492 psi | 87% | 3291 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,318 psi | 88% | 3415 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,752 psi | 86% | 3346 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,246 psi | 90% | 3442 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,658 psi | 72% | 3268 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 82% | 54,708 psi | 86% | 3245 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,143 psi | 86% | 3287 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,493 psi | 90% | 3343 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 96% | 54,534 psi | 85% | 3340 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 88% | 54,462 psi | 85% | 3268 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,376 psi | 88% | 3301 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 56,434 psi | 88% | 3284 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,273 psi | 85% | 3284 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,130 psi | 90% | 3356 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,999 psi | 88% | 3173 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,086 psi | 88% | 3245 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,070 psi | 85% | 3330 fps | 97.1% |
| Somchem S355 | <<locked>> | 86% | 55,201 psi | 87% | 3284 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,710 psi | 89% | 3376 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,056 psi | 86% | 3310 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 82% | 55,201 psi | 87% | 3205 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,521 psi | 87% | 3219 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,710 psi | 89% | 3261 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,317 psi | 87% | 3304 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 3284 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 57,450 psi | 90% | 3264 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,621 psi | 86% | 3307 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 98% | 55,680 psi | 87% | 3373 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,317 psi | 87% | 3264 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,014 psi | 89% | 3386 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,342 psi | 77% | 3402 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,477 psi | 87% | 3307 fps | 97.3% |
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 2495 | <<locked>> | 80% | 52,373 psi | 82% | 3156 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,357 psi | 79% | 3156 fps | 97% |
| Accurate 3100 | <<locked>> | 90% | 39,639 psi | 62% | 2986 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,661 psi | 78% | 3156 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,014 psi | 60% | 2976 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 80% | 47,050 psi | 74% | 3130 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 48,704 psi | 76% | 3232 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 98% | 53,635 psi | 84% | 3353 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,852 psi | 83% | 3373 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,659 psi | 75% | 3156 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,894 psi | 80% | 3235 fps | 99.8% |
| Alliant Reloder-16 | 72.8 gr | 80% | 36,999 psi | 58% | 2992 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,395 psi | 66% | 3143 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 48,327 psi | 76% | 3219 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,861 psi | 72% | 3202 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 30,864 psi | 48% | 2818 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 37,811 psi | 59% | 3031 fps | 95.8% |
| Alliant Reloder-26 | 86.4 gr | 86% | 36,390 psi | 57% | 3035 fps | 96.1% |
| Bofors RP15 | <<locked>> | 98% | 48,298 psi | 76% | 3255 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,979 psi | 75% | 3166 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,861 psi | 72% | 3202 fps | 95% |
| Bofors RP7 | <<locked>> | 82% | 44,802 psi | 70% | 3074 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 48,385 psi | 76% | 3176 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 43,207 psi | 68% | 3107 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 46,151 psi | 72% | 3140 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,606 psi | 54% | 2874 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,084 psi | 83% | 3287 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,496 psi | 67% | 3117 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 42% | 1916 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,606 psi | 84% | 3255 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,487 psi | 78% | 3169 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,808 psi | 81% | 3202 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 43,091 psi | 68% | 3051 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,584 psi | 68% | 3048 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 36,564 psi | 57% | 2923 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 52,243 psi | 82% | 3268 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,244 psi | 85% | 3222 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,705 psi | 78% | 3169 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,959 psi | 64% | 2989 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 41,785 psi | 65% | 3022 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 38,159 psi | 60% | 2949 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 54,056 psi | 85% | 3241 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,270 psi | 79% | 3222 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 49,647 psi | 78% | 3225 fps | 95.7% |
| Norma MRP | 87.8 gr | 90% | 42,090 psi | 66% | 3150 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,913 psi | 59% | 2976 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 51,039 psi | 80% | 3245 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 51,474 psi | 81% | 3330 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 82% | 39,639 psi | 62% | 3025 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 45,963 psi | 72% | 3182 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 43% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,457 psi | 76% | 3156 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,078 psi | 71% | 3212 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,087 psi | 60% | 2995 fps | 96.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,970 psi | 58% | 2999 fps | 95.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,351 psi | 66% | 3179 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 51,329 psi | 80% | 3186 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,107 psi | 71% | 3100 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 53,708 psi | 84% | 3271 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 47,514 psi | 74% | 3202 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 44,802 psi | 70% | 3074 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,959 psi | 64% | 2989 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 49,705 psi | 78% | 3169 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 41,785 psi | 65% | 3022 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,514 psi | 73% | 3159 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,267 psi | 73% | 3012 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,161 psi | 63% | 2923 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,094 psi | 74% | 3192 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 45,411 psi | 71% | 3104 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 34,345 psi | 54% | 2920 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 44,962 psi | 70% | 3114 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 51,677 psi | 81% | 3150 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,141 psi | 82% | 3163 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,395 psi | 68% | 3022 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 39,349 psi | 62% | 2982 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 94% | 44,469 psi | 70% | 3084 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,401 psi | 79% | 3150 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,783 psi | 61% | 2972 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 32,068 psi | 50% | 2841 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,711 psi | 61% | 2946 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 43,207 psi | 68% | 3107 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,312 psi | 46% | 2854 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 94% | 48,037 psi | 75% | 3166 fps | 95.5% |
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 96 powders for .300 Norma Mag. loaded with the .308 | 135gr | Atomic 29 FNHP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,448 fps; across all powders the maximum-charge window runs from 2,139 fps to 3,448 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, 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. Alliant Reloder-26, Norma MRP, Alliant Reloder-16 rank at the top here: for .300 Norma Mag. with the .308 | 135gr | Atomic 29 FNHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.