Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 123gr | Sako Gamehead bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-26.
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>> | 84% | 55,927 psi | 88% | 3333 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,624 psi | 90% | 3389 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,547 psi | 81% | 3343 fps | 97.8% |
| Accurate 4064 | <<locked>> | 86% | 56,347 psi | 88% | 3392 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,406 psi | 90% | 3491 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 55,201 psi | 87% | 3419 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 56,565 psi | 89% | 3422 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,392 psi | 90% | 3422 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,883 psi | 88% | 3553 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,839 psi | 86% | 3451 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,839 psi | 86% | 3451 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,377 psi | 90% | 3451 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,725 psi | 90% | 3474 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,259 psi | 85% | 3494 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,782 psi | 87% | 3527 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,725 psi | 90% | 3504 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,385 psi | 76% | 3373 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,177 psi | 66% | 3245 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3589 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,492 psi | 87% | 3428 fps | 99.6% |
| Bofors RP3 | <<locked>> | 86% | 54,636 psi | 86% | 3402 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 54,259 psi | 85% | 3369 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 86% | 55,274 psi | 87% | 3419 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 92% | 55,985 psi | 88% | 3481 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 90% | 55,738 psi | 87% | 3435 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 55,854 psi | 88% | 3432 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,607 psi | 86% | 3409 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,246 psi | 88% | 3465 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,536 psi | 89% | 3514 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 56% | 2215 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,072 psi | 89% | 3435 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,275 psi | 88% | 3419 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,043 psi | 88% | 3406 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,347 psi | 87% | 3376 fps | 97.6% |
| IMR 4350 | <<locked>> | 94% | 55,158 psi | 86% | 3399 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,927 psi | 88% | 3406 fps | 97.6% |
| IMR 4831 | <<locked>> | 96% | 57,667 psi | 90% | 3474 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 55,550 psi | 87% | 3448 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 57,392 psi | 90% | 3422 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,782 psi | 87% | 3392 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,667 psi | 90% | 3399 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,072 psi | 88% | 3399 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,970 psi | 88% | 3402 fps | 98.8% |
| Lovex S070 | <<locked>> | 94% | 57,363 psi | 90% | 3445 fps | 98.2% |
| Norma 201 | <<locked>> | 84% | 57,551 psi | 90% | 3419 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,650 psi | 86% | 3360 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,956 psi | 89% | 3458 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,202 psi | 88% | 3455 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 54,781 psi | 86% | 3530 fps | 97.6% |
| Norma URP | <<locked>> | 94% | 55,941 psi | 88% | 3474 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 84% | 54,114 psi | 85% | 3419 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 94% | 54,955 psi | 86% | 3461 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 57% | 2264 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,201 psi | 87% | 3392 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,853 psi | 86% | 3484 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,172 psi | 86% | 3524 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,493 psi | 90% | 3510 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,188 psi | 88% | 3540 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 84% | 54,636 psi | 86% | 3360 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,665 psi | 86% | 3399 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3488 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 90% | 54,259 psi | 85% | 3369 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,970 psi | 88% | 3402 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,782 psi | 87% | 3392 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,072 psi | 88% | 3399 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,363 psi | 90% | 3445 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,492 psi | 89% | 3465 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,710 psi | 89% | 3412 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,435 psi | 90% | 3442 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,824 psi | 86% | 3294 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,796 psi | 87% | 3287 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,927 psi | 88% | 3343 fps | 97.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 3484 fps | 96.5% |
| Somchem S335 | <<locked>> | 82% | 54,563 psi | 86% | 3284 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,478 psi | 89% | 3402 fps | 99.9% |
| Somchem S355 | <<locked>> | 88% | 54,621 psi | 86% | 3392 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,984 psi | 86% | 3474 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,070 psi | 85% | 3399 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 82% | 55,303 psi | 87% | 3278 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,766 psi | 86% | 3323 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,303 psi | 87% | 3333 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,173 psi | 88% | 3373 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,491 psi | 85% | 3402 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 86% | 57,406 psi | 90% | 3386 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,537 psi | 90% | 3474 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 3465 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,476 psi | 85% | 3369 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,173 psi | 88% | 3481 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,801 psi | 69% | 3402 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,056 psi | 85% | 3389 fps | 100% |
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% | 49,110 psi | 77% | 3222 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 50,531 psi | 79% | 3258 fps | 95.8% |
| Accurate 3100 | <<locked>> | 94% | 41,771 psi | 65% | 3140 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,441 psi | 73% | 3219 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 37,492 psi | 59% | 3068 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 51,793 psi | 81% | 3356 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 44,005 psi | 69% | 3173 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,867 psi | 84% | 3360 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,486 psi | 76% | 3406 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 51,314 psi | 80% | 3379 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 51,314 psi | 80% | 3379 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,222 psi | 69% | 3199 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,355 psi | 74% | 3278 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 36,666 psi | 57% | 3081 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,957 psi | 61% | 3166 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,070 psi | 85% | 3438 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,474 psi | 51% | 2966 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 39,566 psi | 62% | 3169 fps | 95% |
| Alliant Reloder-26 | 87.6 gr | 90% | 38,435 psi | 60% | 3192 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,721 psi | 81% | 3356 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 44,556 psi | 70% | 3209 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 47,703 psi | 75% | 3238 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,063 psi | 71% | 3212 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 45,614 psi | 71% | 3268 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 52,098 psi | 82% | 3366 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 52,388 psi | 82% | 3366 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,879 psi | 50% | 2897 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,139 psi | 77% | 3337 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 48,675 psi | 76% | 3356 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1985 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,140 psi | 79% | 3307 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 52,779 psi | 83% | 3360 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,253 psi | 72% | 3215 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,588 psi | 76% | 3238 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 48,515 psi | 76% | 3268 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 46,253 psi | 72% | 3209 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 36,187 psi | 57% | 3018 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 48,588 psi | 76% | 3314 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 53,867 psi | 84% | 3360 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,996 psi | 81% | 3330 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,010 psi | 80% | 3278 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 46,499 psi | 73% | 3219 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,799 psi | 64% | 3081 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 44,367 psi | 70% | 3182 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 50,778 psi | 80% | 3301 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,184 psi | 80% | 3301 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,746 psi | 73% | 3264 fps | 99.1% |
| Norma 204 | <<locked>> | 92% | 52,373 psi | 82% | 3383 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 47,427 psi | 74% | 3379 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 37,362 psi | 59% | 3064 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 47,181 psi | 74% | 3281 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 41,771 psi | 65% | 3182 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 43% | 2034 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,121 psi | 71% | 3186 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,068 psi | 80% | 3412 fps | 99.3% |
| ReloadSwiss RS 60 | 76 gr | 80% | 41,423 psi | 65% | 3248 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 37,405 psi | 59% | 3084 fps | 95.1% |
| ReloadSwiss RS 70 | 81 gr | 84% | 39,305 psi | 62% | 3163 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 48,167 psi | 75% | 3238 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,800 psi | 66% | 3140 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 53,287 psi | 84% | 3422 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 47,703 psi | 75% | 3238 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,799 psi | 64% | 3081 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,996 psi | 81% | 3330 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,499 psi | 73% | 3219 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 44,367 psi | 70% | 3182 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,047 psi | 67% | 3199 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,968 psi | 83% | 3346 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,415 psi | 79% | 3317 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,517 psi | 81% | 3235 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,395 psi | 68% | 3071 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,818 psi | 72% | 3146 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,808 psi | 83% | 3415 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,416 psi | 81% | 3232 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,576 psi | 82% | 3337 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 42,366 psi | 66% | 3146 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 31,372 psi | 49% | 2936 fps | 96.7% |
| Somchem S385 | <<locked>> | 94% | 47,181 psi | 74% | 3261 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 51,982 psi | 81% | 3222 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,225 psi | 76% | 3212 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,573 psi | 76% | 3219 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,306 psi | 63% | 3064 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 36,289 psi | 57% | 3005 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,108 psi | 74% | 3205 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 38,537 psi | 60% | 3071 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 35,955 psi | 56% | 3061 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,839 psi | 56% | 2972 fps | 97.4% |
| Winchester 760 | <<locked>> | 86% | 45,774 psi | 72% | 3271 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,966 psi | 49% | 2995 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,502 psi | 79% | 3323 fps | 99.8% |
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 | 123gr | Sako Gamehead. Alliant Reloder-26 delivers the highest muzzle velocity at 3,589 fps; across all powders the maximum-charge window runs from 2,215 fps to 3,589 fps. Accurate 3100 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 56–90 %, leaving at least 10 % headroom. Accurate 3100, Alliant Reloder-19, 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. ReloadSwiss RS 70, ReloadSwiss RS 60, Alliant Reloder-26 rank at the top here: for .300 Norma Mag. with the .308 | 123gr | Sako Gamehead 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.