Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 134gr | CutEdge ESP Raptor bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Alliant Reloder-17.
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% | 54,070 psi | 85% | 3192 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,130 psi | 88% | 3261 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3291 fps | 98.9% |
| Accurate 4064 | <<locked>> | 84% | 54,665 psi | 86% | 3251 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,115 psi | 88% | 3360 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 57,392 psi | 90% | 3343 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,361 psi | 87% | 3291 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 57,653 psi | 90% | 3406 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,723 psi | 86% | 3419 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,057 psi | 88% | 3317 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,347 psi | 88% | 3340 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,072 psi | 89% | 3432 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,708 psi | 86% | 3392 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,942 psi | 89% | 3389 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 3386 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,068 psi | 80% | 3314 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,338 psi | 69% | 3209 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,390 psi | 87% | 3468 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 56,927 psi | 89% | 3330 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 3386 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 56,376 psi | 88% | 3307 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 57,537 psi | 90% | 3350 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,955 psi | 86% | 3356 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,592 psi | 86% | 3314 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,421 psi | 90% | 3346 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,129 psi | 86% | 3333 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,463 psi | 87% | 3389 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 57% | 2136 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,680 psi | 87% | 3301 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,621 psi | 86% | 3271 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,421 psi | 90% | 3310 fps | 98.7% |
| IMR 4350 | <<locked>> | 94% | 57,711 psi | 90% | 3343 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,578 psi | 86% | 3278 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 56,739 psi | 89% | 3353 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 54,012 psi | 85% | 3310 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,159 psi | 88% | 3261 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,795 psi | 86% | 3264 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,563 psi | 86% | 3274 fps | 99.1% |
| Lovex S070 | <<locked>> | 92% | 55,970 psi | 88% | 3320 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,773 psi | 70% | 3110 fps | 97.1% |
| Norma 201 | <<locked>> | 82% | 55,912 psi | 88% | 3278 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,753 psi | 89% | 3278 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,622 psi | 87% | 3323 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,056 psi | 86% | 3337 fps | 96.8% |
| Norma MRP | <<locked>> | 98% | 54,027 psi | 85% | 3412 fps | 98.2% |
| Norma URP | <<locked>> | 92% | 54,853 psi | 86% | 3343 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 56,637 psi | 89% | 3346 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,653 psi | 90% | 3402 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 58% | 2185 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,421 psi | 90% | 3330 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,522 psi | 90% | 3419 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,157 psi | 85% | 3389 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,289 psi | 88% | 3383 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,042 psi | 86% | 3412 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,623 psi | 89% | 3281 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,956 psi | 89% | 3327 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 56,014 psi | 88% | 3373 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 56,376 psi | 88% | 3307 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,563 psi | 86% | 3274 fps | 99.1% |
| Shooters World Precision | <<locked>> | 84% | 54,795 psi | 86% | 3264 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,970 psi | 88% | 3320 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,187 psi | 86% | 3330 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,144 psi | 88% | 3307 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,826 psi | 89% | 3212 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,433 psi | 85% | 3156 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,360 psi | 85% | 3219 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,535 psi | 87% | 3363 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 56,449 psi | 88% | 3202 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,043 psi | 89% | 3323 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,375 psi | 85% | 3350 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,840 psi | 89% | 3346 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 57,377 psi | 90% | 3192 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,029 psi | 89% | 3238 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,522 psi | 90% | 3255 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,781 psi | 86% | 3238 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,072 psi | 89% | 3340 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,460 psi | 82% | 3251 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 55,796 psi | 87% | 3245 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,362 psi | 88% | 3343 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,029 psi | 89% | 3402 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,290 psi | 90% | 3304 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,955 psi | 86% | 3356 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,470 psi | 73% | 3366 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,362 psi | 88% | 3317 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3343 fps | 97.4% |
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% | 50,517 psi | 79% | 3133 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,979 psi | 77% | 3130 fps | 96.4% |
| Accurate 3100 | <<locked>> | 92% | 40,741 psi | 64% | 3022 fps | 96% |
| Accurate 4064 | <<locked>> | 80% | 47,877 psi | 75% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,448 psi | 57% | 2946 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 53,824 psi | 84% | 3281 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,716 psi | 72% | 3107 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 50,357 psi | 79% | 3271 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,894 psi | 80% | 3346 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,050 psi | 72% | 3133 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,284 psi | 77% | 3212 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,752 psi | 56% | 2963 fps | 96.3% |
| Alliant Reloder-17 | 76.4 gr | 80% | 40,843 psi | 64% | 3114 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 49,879 psi | 78% | 3258 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 47,137 psi | 74% | 3238 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,689 psi | 47% | 2785 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 38,798 psi | 61% | 3068 fps | 96% |
| Alliant Reloder-26 | 86.1 gr | 88% | 37,536 psi | 59% | 3074 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 46,325 psi | 73% | 3140 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 47,137 psi | 74% | 3238 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 43,569 psi | 68% | 3051 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,818 psi | 73% | 3150 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 41,597 psi | 65% | 3077 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 47,776 psi | 75% | 3179 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,141 psi | 52% | 2841 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,430 psi | 81% | 3268 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 44,150 psi | 69% | 3159 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 42% | 1913 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,185 psi | 82% | 3235 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,051 psi | 75% | 3150 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,372 psi | 79% | 3179 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 44,425 psi | 70% | 3084 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,221 psi | 66% | 3022 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 35,099 psi | 55% | 2894 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 50,575 psi | 79% | 3245 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 52,663 psi | 83% | 3202 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,080 psi | 75% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,581 psi | 62% | 2959 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 43,163 psi | 68% | 3058 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 39,015 psi | 61% | 2979 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 52,388 psi | 82% | 3219 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,185 psi | 83% | 3222 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,617 psi | 76% | 3196 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 51,285 psi | 80% | 3264 fps | 95.9% |
| Norma MRP | <<locked>> | 92% | 43,352 psi | 68% | 3189 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,448 psi | 57% | 2946 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,313 psi | 77% | 3219 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 40,770 psi | 64% | 3061 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 43% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,876 psi | 73% | 3130 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,577 psi | 84% | 3350 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,497 psi | 68% | 3189 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,448 psi | 57% | 2963 fps | 95.8% |
| ReloadSwiss RS 70 | 79.5 gr | 82% | 38,247 psi | 60% | 3041 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,850 psi | 78% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,453 psi | 68% | 3074 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 94% | 48,834 psi | 77% | 3235 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 43,569 psi | 68% | 3051 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,581 psi | 62% | 2959 fps | 95.9% |
| Shooters World Precision | <<locked>> | 80% | 48,080 psi | 75% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 43,163 psi | 68% | 3058 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,991 psi | 71% | 3136 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,475 psi | 82% | 3245 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,374 psi | 84% | 3156 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,049 psi | 71% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,582 psi | 65% | 2963 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 48,428 psi | 76% | 3228 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,997 psi | 83% | 3150 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,816 psi | 69% | 3077 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 32,866 psi | 52% | 2887 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 46,151 psi | 72% | 3143 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 53,969 psi | 85% | 3140 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,227 psi | 79% | 3133 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,488 psi | 79% | 3143 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,916 psi | 66% | 2999 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,884 psi | 59% | 2953 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 96% | 45,774 psi | 72% | 3117 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,921 psi | 77% | 3130 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,420 psi | 59% | 2949 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 32,909 psi | 52% | 2877 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,405 psi | 59% | 2920 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 41,756 psi | 65% | 3081 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 30,139 psi | 47% | 2890 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,620 psi | 82% | 3255 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,632 psi | 78% | 3205 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 102 powders for .300 Norma Mag. loaded with the .308 | 134gr | CutEdge ESP Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,468 fps; across all powders the maximum-charge window runs from 2,136 fps to 3,468 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 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 134.0 gr projectile in 0.308" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .300 Norma Mag. with the .308 | 134gr | CutEdge ESP Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Hodgdon H1000, Hodgdon H4831 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.