Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 115gr | Lehigh Defense Controlled Chaos bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 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>> | 84% | 57,130 psi | 90% | 3396 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,405 psi | 88% | 3415 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,462 psi | 85% | 3425 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 56,594 psi | 89% | 3465 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,232 psi | 90% | 3547 fps | 99% |
| ADI AR 2206H | <<locked>> | 86% | 56,565 psi | 89% | 3497 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 90% | 54,186 psi | 85% | 3432 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,332 psi | 87% | 3442 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 56,391 psi | 88% | 3432 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,739 psi | 89% | 3625 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,375 psi | 85% | 3458 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,940 psi | 86% | 3484 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,433 psi | 85% | 3547 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,796 psi | 87% | 3589 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,829 psi | 66% | 3274 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,645 psi | 75% | 3468 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,695 psi | 89% | 3504 fps | 99% |
| Bofors RP3 | <<locked>> | 90% | 55,259 psi | 87% | 3474 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,869 psi | 89% | 3428 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,114 psi | 86% | 3468 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,058 psi | 89% | 3583 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 90% | 56,072 psi | 88% | 3484 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 96% | 56,072 psi | 88% | 3530 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 86% | 57,203 psi | 90% | 3514 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,433 psi | 85% | 3468 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,159 psi | 90% | 3543 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 96% | 57,363 psi | 90% | 3573 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,418 psi | 56% | 2234 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,723 psi | 86% | 3451 fps | 99.6% |
| IMR 3031 | <<locked>> | 86% | 57,058 psi | 89% | 3504 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,043 psi | 89% | 3474 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,971 psi | 89% | 3448 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,072 psi | 89% | 3471 fps | 96.5% |
| IMR 4831 | <<locked>> | 98% | 54,012 psi | 85% | 3471 fps | 98.6% |
| IMR 4895 | <<locked>> | 88% | 56,376 psi | 88% | 3520 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 84% | 55,332 psi | 87% | 3442 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 86% | 56,681 psi | 89% | 3471 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,724 psi | 87% | 3415 fps | 99.5% |
| Lovex S062 | <<locked>> | 90% | 57,043 psi | 89% | 3474 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,666 psi | 89% | 3465 fps | 97.8% |
| Lovex S070 | <<locked>> | 96% | 54,143 psi | 85% | 3432 fps | 96.3% |
| Norma 201 | <<locked>> | 86% | 55,172 psi | 86% | 3435 fps | 99.9% |
| Norma 202 | <<locked>> | 86% | 55,825 psi | 87% | 3445 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,595 psi | 90% | 3530 fps | 99.6% |
| Norma URP | <<locked>> | 98% | 55,869 psi | 88% | 3527 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 88% | 54,911 psi | 86% | 3488 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 98% | 54,853 psi | 86% | 3514 fps | 97.2% |
| Ramshot TAC | <<locked>> | 84% | 55,796 psi | 87% | 3448 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,477 psi | 87% | 3474 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,304 psi | 88% | 3438 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,969 psi | 56% | 2287 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,318 psi | 88% | 3461 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,317 psi | 87% | 3553 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,332 psi | 87% | 3596 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,246 psi | 90% | 3566 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,507 psi | 89% | 3593 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 84% | 55,854 psi | 88% | 3428 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,782 psi | 87% | 3438 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 92% | 55,100 psi | 86% | 3465 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,666 psi | 89% | 3465 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,681 psi | 89% | 3471 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,043 psi | 89% | 3474 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,143 psi | 85% | 3432 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,072 psi | 89% | 3533 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,273 psi | 85% | 3422 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,940 psi | 86% | 3455 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,420 psi | 88% | 3376 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,029 psi | 89% | 3369 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,029 psi | 89% | 3406 fps | 96.6% |
| Somchem S321 | <<locked>> | 82% | 56,927 psi | 89% | 3478 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,999 psi | 88% | 3373 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,983 psi | 85% | 3415 fps | 99.3% |
| Somchem S355 | <<locked>> | 92% | 55,172 psi | 86% | 3461 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,346 psi | 85% | 3533 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,854 psi | 88% | 3340 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,681 psi | 89% | 3363 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,463 psi | 87% | 3406 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,304 psi | 88% | 3415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,971 psi | 89% | 3445 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,708 psi | 86% | 3461 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 84% | 55,753 psi | 87% | 3442 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 88% | 54,795 psi | 86% | 3406 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,696 psi | 90% | 3530 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 3373 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,303 psi | 87% | 3438 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 56,144 psi | 88% | 3497 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,275 psi | 88% | 3533 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,710 psi | 59% | 3255 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,071 psi | 86% | 3465 fps | 99.7% |
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% | 50,241 psi | 79% | 3284 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,192 psi | 68% | 3179 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,734 psi | 80% | 3360 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 40,799 psi | 64% | 3159 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 40,190 psi | 63% | 3192 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,572 psi | 73% | 3301 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 39,508 psi | 62% | 3110 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,660 psi | 76% | 3317 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 49,211 psi | 77% | 3314 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,670 psi | 67% | 3317 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,349 psi | 62% | 3136 fps | 97.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,250 psi | 66% | 3215 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,061 psi | 66% | 3271 fps | 96% |
| Alliant Reloder-17 | 72.8 gr | 82% | 36,695 psi | 57% | 3146 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 36,753 psi | 58% | 3136 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 44,077 psi | 69% | 3383 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,050 psi | 72% | 3294 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 39,160 psi | 61% | 3136 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,285 psi | 79% | 3310 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,964 psi | 75% | 3333 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,127 psi | 83% | 3510 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 82% | 42,786 psi | 67% | 3209 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 52,431 psi | 82% | 3461 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,021 psi | 74% | 3314 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 36,318 psi | 57% | 3071 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,207 psi | 68% | 3268 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 94% | 53,229 psi | 83% | 3494 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 41% | 2005 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,107 psi | 71% | 3258 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 46,731 psi | 73% | 3320 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,481 psi | 65% | 3156 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 50,140 psi | 79% | 3314 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,548 psi | 84% | 3406 fps | 95.7% |
| IMR 4831 | <<locked>> | 90% | 41,263 psi | 65% | 3202 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 43,279 psi | 68% | 3251 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 48,660 psi | 76% | 3317 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 45,977 psi | 72% | 3274 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 46,151 psi | 72% | 3225 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 41,408 psi | 65% | 3159 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 46,920 psi | 74% | 3271 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 50,937 psi | 80% | 3369 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,542 psi | 71% | 3248 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 45,934 psi | 72% | 3261 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 41,611 psi | 65% | 3199 fps | 97% |
| Norma URP | <<locked>> | 90% | 42,743 psi | 67% | 3255 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,452 psi | 65% | 3205 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 47,906 psi | 75% | 3373 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 48,863 psi | 77% | 3310 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,428 psi | 76% | 3337 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,721 psi | 83% | 3373 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,614 psi | 42% | 2047 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 49,327 psi | 77% | 3323 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,773 psi | 70% | 3337 fps | 97.1% |
| ReloadSwiss RS 60 | 71 gr | 80% | 36,347 psi | 57% | 3159 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,960 psi | 67% | 3278 fps | 95.7% |
| ReloadSwiss RS 70 | 82.9 gr | 92% | 45,687 psi | 72% | 3363 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,458 psi | 78% | 3310 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,366 psi | 68% | 3189 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 36,883 psi | 58% | 3068 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 46,920 psi | 74% | 3271 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,977 psi | 72% | 3274 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 41,408 psi | 65% | 3159 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 94% | 50,937 psi | 80% | 3369 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,855 psi | 59% | 3120 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,181 psi | 74% | 3278 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,165 psi | 71% | 3258 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,659 psi | 73% | 3202 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,986 psi | 61% | 3031 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 49,922 psi | 78% | 3274 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 52,997 psi | 83% | 3409 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 46,412 psi | 73% | 3202 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,847 psi | 73% | 3278 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 37,507 psi | 59% | 3077 fps | 96.2% |
| Somchem S365 | <<locked>> | 84% | 31,285 psi | 49% | 2982 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 52,576 psi | 82% | 3287 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,992 psi | 74% | 3199 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,844 psi | 67% | 3176 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,598 psi | 68% | 3182 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 35,810 psi | 56% | 3002 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 88% | 41,843 psi | 66% | 3196 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 48,791 psi | 76% | 3310 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 42,163 psi | 66% | 3159 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 41,321 psi | 65% | 3192 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 40,219 psi | 63% | 3232 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 34,113 psi | 53% | 2959 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 48,921 psi | 77% | 3366 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 52,634 psi | 82% | 3468 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 35,143 psi | 55% | 3166 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,875 psi | 70% | 3261 fps | 98.3% |
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 105 powders for .300 Weath. Mag. loaded with the .308 | 115gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,625 fps; across all powders the maximum-charge window runs from 2,234 fps to 3,625 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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. The 115.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 60, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .300 Weath. Mag. with the .308 | 115gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.