Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 110gr | Speer TMJ bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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 2015 | <<locked>> | 86% | 54,868 psi | 88% | 3402 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,432 psi | 86% | 3415 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,577 psi | 86% | 3412 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,622 psi | 89% | 3481 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 53,432 psi | 86% | 3455 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,316 psi | 85% | 3507 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 88% | 54,230 psi | 87% | 3484 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 94% | 55,506 psi | 89% | 3481 fps | 98.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,417 psi | 86% | 3438 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 86% | 53,577 psi | 86% | 3435 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,621 psi | 88% | 3566 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,085 psi | 87% | 3602 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,129 psi | 88% | 3507 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,375 psi | 87% | 3415 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,753 psi | 89% | 3527 fps | 98.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,517 psi | 83% | 3510 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,547 psi | 84% | 3560 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,215 psi | 87% | 3488 fps | 97.9% |
| Bofors RP3 | <<locked>> | 94% | 55,898 psi | 90% | 3524 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,085 psi | 88% | 3428 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,434 psi | 90% | 3527 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,331 psi | 87% | 3566 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 82% | 53,766 psi | 86% | 3451 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,984 psi | 88% | 3468 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,417 psi | 86% | 3461 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 54,723 psi | 88% | 3501 fps | 99.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,471 psi | 76% | 3366 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,143 psi | 87% | 3527 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 56% | 2228 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,304 psi | 90% | 3507 fps | 99.3% |
| IMR 3031 | <<locked>> | 88% | 54,302 psi | 87% | 3504 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,708 psi | 88% | 3461 fps | 98.4% |
| IMR 4198 | <<locked>> | 82% | 54,317 psi | 87% | 3376 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 3435 fps | 97.1% |
| IMR 4895 | <<locked>> | 90% | 53,693 psi | 86% | 3504 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 86% | 53,417 psi | 86% | 3438 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 53,505 psi | 86% | 3419 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 88% | 53,809 psi | 86% | 3465 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,128 psi | 87% | 3412 fps | 98.7% |
| Lovex S062 | <<locked>> | 92% | 54,520 psi | 87% | 3465 fps | 99.5% |
| Lovex S065 | <<locked>> | 98% | 54,041 psi | 87% | 3438 fps | 96.3% |
| Norma 201 | <<locked>> | 88% | 52,924 psi | 85% | 3428 fps | 99.3% |
| Norma 202 | <<locked>> | 88% | 53,461 psi | 86% | 3438 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,911 psi | 88% | 3514 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 52,344 psi | 84% | 3491 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 92% | 55,782 psi | 89% | 3537 fps | 98.8% |
| Ramshot TAC | <<locked>> | 86% | 53,940 psi | 86% | 3435 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,403 psi | 86% | 3465 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,447 psi | 87% | 3432 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,201 psi | 56% | 2280 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,362 psi | 90% | 3488 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,246 psi | 90% | 3606 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,057 psi | 90% | 3642 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,098 psi | 85% | 3527 fps | 97.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,505 psi | 86% | 3550 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 86% | 53,882 psi | 86% | 3428 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,563 psi | 86% | 3428 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 96% | 55,724 psi | 89% | 3510 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,041 psi | 87% | 3438 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,809 psi | 86% | 3465 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,520 psi | 87% | 3465 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,057 psi | 90% | 3445 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,983 psi | 87% | 3514 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,361 psi | 89% | 3445 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,854 psi | 90% | 3471 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,881 psi | 85% | 3445 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,665 psi | 88% | 3383 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,795 psi | 88% | 3369 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 54,737 psi | 88% | 3474 fps | 99.6% |
| Somchem S335 | <<locked>> | 88% | 53,940 psi | 86% | 3369 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,347 psi | 89% | 3468 fps | 98.8% |
| Somchem S355 | <<locked>> | 96% | 55,898 psi | 90% | 3507 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,963 psi | 75% | 3428 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 84% | 54,186 psi | 87% | 3353 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,737 psi | 88% | 3369 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,202 psi | 90% | 3458 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,027 psi | 87% | 3415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,244 psi | 87% | 3432 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,230 psi | 89% | 3501 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 86% | 53,838 psi | 86% | 3438 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 92% | 55,999 psi | 90% | 3461 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,389 psi | 87% | 3497 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,362 psi | 90% | 3478 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 53,563 psi | 86% | 3488 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,376 psi | 90% | 3520 fps | 99.4% |
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 2015 | <<locked>> | 80% | 45,527 psi | 73% | 3235 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,980 psi | 80% | 3350 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 38,087 psi | 61% | 3107 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 45,107 psi | 72% | 3284 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 35,984 psi | 58% | 3081 fps | 98.3% |
| Accurate 4350 | <<locked>> | 96% | 46,224 psi | 74% | 3366 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 41,959 psi | 67% | 3222 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 43,134 psi | 69% | 3225 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,961 psi | 70% | 3245 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 43,482 psi | 70% | 3258 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,184 psi | 82% | 3494 fps | 98.6% |
| Alliant Power Pro 2000-MR | 69.9 gr | 84% | 43,801 psi | 70% | 3366 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 37,420 psi | 60% | 3117 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,010 psi | 82% | 3356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,018 psi | 69% | 3261 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 45,237 psi | 73% | 3369 fps | 95.7% |
| Alliant Reloder-17 | 72.1 gr | 88% | 39,900 psi | 64% | 3264 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 44,135 psi | 71% | 3278 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 36,970 psi | 59% | 3110 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,730 psi | 73% | 3241 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,627 psi | 68% | 3248 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,905 psi | 75% | 3415 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 80% | 50,198 psi | 80% | 3386 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,445 psi | 82% | 3406 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 46,644 psi | 75% | 3323 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,293 psi | 68% | 3235 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 39,030 psi | 63% | 3169 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,290 psi | 61% | 3179 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 42% | 2005 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,654 psi | 65% | 3179 fps | 96.2% |
| IMR 3031 | <<locked>> | 80% | 41,524 psi | 67% | 3255 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 42,525 psi | 68% | 3205 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 51,155 psi | 82% | 3323 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 44,135 psi | 71% | 3297 fps | 95.4% |
| IMR 4895 | <<locked>> | 82% | 41,205 psi | 66% | 3232 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 43,961 psi | 70% | 3245 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 49,792 psi | 80% | 3350 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 40,828 psi | 65% | 3199 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 42,221 psi | 68% | 3159 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 37,202 psi | 60% | 3084 fps | 96% |
| Lovex S065 | <<locked>> | 96% | 50,560 psi | 81% | 3369 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,031 psi | 66% | 3173 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 41,307 psi | 66% | 3196 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 39,566 psi | 63% | 3179 fps | 95.2% |
| Norma URP | <<locked>> | 96% | 45,977 psi | 74% | 3360 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 84% | 42,221 psi | 68% | 3258 fps | 95.9% |
| Ramshot TAC | <<locked>> | 84% | 50,430 psi | 81% | 3366 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,468 psi | 70% | 3255 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,747 psi | 77% | 3297 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,179 psi | 42% | 2047 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,342 psi | 79% | 3356 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,090 psi | 67% | 3310 fps | 95.3% |
| ReloadSwiss RS 60 | 65.5 gr | 80% | 32,285 psi | 52% | 3048 fps | 95% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 46,108 psi | 74% | 3383 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 49,821 psi | 80% | 3474 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 44,701 psi | 72% | 3245 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 38,943 psi | 62% | 3110 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 84% | 37,144 psi | 60% | 3107 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 50,560 psi | 81% | 3369 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,828 psi | 65% | 3199 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 37,202 psi | 60% | 3084 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,185 psi | 84% | 3376 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,046 psi | 66% | 3235 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,909 psi | 83% | 3386 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 48,646 psi | 78% | 3333 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,509 psi | 65% | 3173 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,482 psi | 68% | 3143 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,143 psi | 56% | 2969 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 47,645 psi | 76% | 3333 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 42,061 psi | 67% | 3140 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 41,858 psi | 67% | 3192 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 38,116 psi | 61% | 3123 fps | 95.3% |
| Somchem S365 | <<locked>> | 92% | 35,911 psi | 58% | 3153 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 48,008 psi | 77% | 3245 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,670 psi | 68% | 3150 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,159 psi | 61% | 3114 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 39,015 psi | 63% | 3110 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 33,895 psi | 54% | 2982 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 94% | 45,020 psi | 72% | 3294 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 44,092 psi | 71% | 3238 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 37,652 psi | 60% | 3084 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 96% | 47,543 psi | 76% | 3363 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 37,275 psi | 60% | 3068 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 43,453 psi | 70% | 3281 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,943 psi | 64% | 3176 fps | 96.1% |
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 85 powders for .300 Win. Mag. loaded with the .308 | 110gr | Speer TMJ. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,642 fps; across all powders the maximum-charge window runs from 2,228 fps to 3,642 fps. Accurate 4350 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 110gr | Speer TMJ 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.