Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 115gr | Lehigh Defense Controlled Chaos bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and ReloadSwiss RS 52.
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% | 55,680 psi | 89% | 3346 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,157 psi | 87% | 3363 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,186 psi | 87% | 3356 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,491 psi | 87% | 3409 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,491 psi | 87% | 3409 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 54,114 psi | 87% | 3402 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,896 psi | 86% | 3458 fps | 97.9% |
| ADI AR 2206H | <<locked>> | 88% | 54,723 psi | 88% | 3428 fps | 99% |
| ADI AR 2208 | <<locked>> | 94% | 55,898 psi | 90% | 3425 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,838 psi | 86% | 3383 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 86% | 54,273 psi | 87% | 3379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,477 psi | 89% | 3514 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,665 psi | 88% | 3550 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,883 psi | 90% | 3455 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,027 psi | 88% | 3356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,420 psi | 90% | 3474 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,866 psi | 83% | 3458 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,258 psi | 85% | 3514 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,926 psi | 88% | 3438 fps | 98.2% |
| Bofors RP3 | <<locked>> | 92% | 52,910 psi | 85% | 3406 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,695 psi | 89% | 3373 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,258 psi | 85% | 3406 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,085 psi | 88% | 3517 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 53,650 psi | 86% | 3383 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,954 psi | 87% | 3409 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 88% | 55,303 psi | 89% | 3445 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,037 psi | 77% | 3320 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,650 psi | 88% | 3471 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,925 psi | 56% | 2175 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,463 psi | 89% | 3428 fps | 99.3% |
| IMR 3031 | <<locked>> | 90% | 53,330 psi | 86% | 3419 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,592 psi | 88% | 3396 fps | 98.6% |
| IMR 4198 | <<locked>> | 82% | 55,013 psi | 88% | 3317 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,266 psi | 73% | 3264 fps | 96.1% |
| IMR 4895 | <<locked>> | 90% | 54,317 psi | 87% | 3455 fps | 99% |
| IMR 8208 XBR | <<locked>> | 86% | 53,838 psi | 86% | 3383 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 82% | 53,998 psi | 87% | 3366 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 54,491 psi | 87% | 3409 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,491 psi | 87% | 3353 fps | 99% |
| Lovex S062 | <<locked>> | 92% | 55,100 psi | 88% | 3412 fps | 99.7% |
| Lovex S065 | <<locked>> | 98% | 54,563 psi | 87% | 3389 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 53,577 psi | 86% | 3376 fps | 99.6% |
| Norma 202 | <<locked>> | 88% | 53,925 psi | 86% | 3383 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,593 psi | 89% | 3461 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 53,084 psi | 85% | 3445 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 90% | 52,779 psi | 85% | 3419 fps | 98.6% |
| Ramshot TAC | <<locked>> | 86% | 54,534 psi | 87% | 3386 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,838 psi | 86% | 3409 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,969 psi | 88% | 3379 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,302 psi | 57% | 2224 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,330 psi | 86% | 3369 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,665 psi | 88% | 3389 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,881 psi | 85% | 3481 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,055 psi | 85% | 3524 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,838 psi | 86% | 3478 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,954 psi | 87% | 3504 fps | 97.2% |
| Rottweil R 901 | <<locked>> | 86% | 54,389 psi | 87% | 3369 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,012 psi | 87% | 3373 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 96% | 56,362 psi | 90% | 3458 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,563 psi | 87% | 3389 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,491 psi | 87% | 3409 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,100 psi | 88% | 3412 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,607 psi | 88% | 3461 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,811 psi | 89% | 3383 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,707 psi | 85% | 3356 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,287 psi | 85% | 3389 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,230 psi | 89% | 3327 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,347 psi | 89% | 3314 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 55,332 psi | 89% | 3422 fps | 99.8% |
| Somchem S335 | <<locked>> | 88% | 54,607 psi | 88% | 3317 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,101 psi | 90% | 3419 fps | 99.1% |
| Somchem S355 | <<locked>> | 94% | 53,200 psi | 85% | 3396 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,485 psi | 76% | 3383 fps | 99.4% |
| Unknown powder | <<locked>> | 98% | 54,273 psi | 87% | 3458 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 84% | 53,722 psi | 86% | 3278 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,491 psi | 87% | 3304 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,374 psi | 86% | 3346 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,722 psi | 86% | 3350 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,404 psi | 87% | 3376 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 98% | 55,114 psi | 88% | 3432 fps | 98% |
| Vihtavuori N530 | <<locked>> | 84% | 53,447 psi | 86% | 3389 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 90% | 53,621 psi | 86% | 3373 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,143 psi | 88% | 3481 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,098 psi | 85% | 3363 fps | 99.4% |
| Winchester 748 | <<locked>> | 84% | 54,911 psi | 88% | 3445 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,563 psi | 87% | 3425 fps | 99.3% |
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 2015 | <<locked>> | 80% | 46,064 psi | 74% | 3179 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,546 psi | 81% | 3297 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,696 psi | 62% | 3061 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,179 psi | 71% | 3212 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 44,179 psi | 71% | 3212 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 36,535 psi | 59% | 3035 fps | 98.7% |
| Accurate 4350 | <<locked>> | 94% | 43,482 psi | 70% | 3248 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 42,366 psi | 68% | 3173 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 40,915 psi | 66% | 3114 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,396 psi | 71% | 3196 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 44,164 psi | 71% | 3205 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,721 psi | 83% | 3442 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 44,309 psi | 71% | 3323 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,433 psi | 57% | 3009 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,793 psi | 83% | 3304 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,872 psi | 66% | 3150 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,047 psi | 69% | 3258 fps | 95.4% |
| Alliant Reloder-17 | 69.1 gr | 86% | 37,623 psi | 60% | 3143 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,684 psi | 67% | 3163 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 35,056 psi | 56% | 3002 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,282 psi | 74% | 3192 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,207 psi | 69% | 3205 fps | 98.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,471 psi | 76% | 3366 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 80% | 47,036 psi | 75% | 3261 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 44,063 psi | 71% | 3209 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,699 psi | 68% | 3186 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 37,028 psi | 59% | 3064 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,535 psi | 59% | 3074 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 42% | 1955 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,956 psi | 61% | 3051 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 38,392 psi | 62% | 3117 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 39,929 psi | 64% | 3084 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,764 psi | 83% | 3268 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 42,337 psi | 68% | 3202 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,030 psi | 63% | 3117 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 44,396 psi | 71% | 3196 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 50,430 psi | 81% | 3301 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 41,350 psi | 66% | 3150 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 42,670 psi | 68% | 3114 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 37,710 psi | 60% | 3038 fps | 96.6% |
| Lovex S065 | <<locked>> | 94% | 48,138 psi | 77% | 3261 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,553 psi | 67% | 3127 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 41,698 psi | 67% | 3140 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 40,205 psi | 64% | 3136 fps | 95.9% |
| Norma URP | <<locked>> | 94% | 43,511 psi | 70% | 3248 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 39,755 psi | 64% | 3140 fps | 95.5% |
| Ramshot TAC | <<locked>> | 82% | 47,718 psi | 77% | 3251 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,888 psi | 70% | 3209 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,109 psi | 77% | 3245 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 42% | 2001 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,879 psi | 80% | 3304 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 51,111 psi | 82% | 3323 fps | 95.1% |
| ReloadSwiss RS 52 | 64.9 gr | 82% | 42,757 psi | 69% | 3264 fps | 95.9% |
| ReloadSwiss RS 60 | 64.3 gr | 80% | 32,663 psi | 52% | 3009 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,410 psi | 70% | 3264 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 47,050 psi | 75% | 3353 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,440 psi | 73% | 3196 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 39,450 psi | 63% | 3064 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 37,666 psi | 60% | 3068 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,138 psi | 77% | 3261 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,350 psi | 66% | 3150 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 37,710 psi | 60% | 3038 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 38,928 psi | 62% | 3123 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,489 psi | 84% | 3327 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 45,788 psi | 73% | 3215 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,959 psi | 66% | 3127 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,946 psi | 69% | 3094 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,549 psi | 57% | 2920 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 48,254 psi | 77% | 3287 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 42,554 psi | 68% | 3091 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 42,453 psi | 68% | 3150 fps | 96.5% |
| Somchem S355 | <<locked>> | 82% | 36,158 psi | 58% | 3015 fps | 95% |
| Somchem S365 | <<locked>> | 90% | 33,968 psi | 54% | 3041 fps | 95.6% |
| Unknown powder | <<locked>> | 94% | 47,369 psi | 76% | 3320 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,485 psi | 76% | 3173 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,248 psi | 65% | 3038 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,682 psi | 62% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,928 psi | 62% | 3051 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 32,677 psi | 52% | 2897 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 92% | 44,817 psi | 72% | 3228 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 46,891 psi | 75% | 3261 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 38,754 psi | 62% | 3068 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 92% | 45,063 psi | 72% | 3278 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 37,753 psi | 61% | 3028 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 47,601 psi | 76% | 3310 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,778 psi | 81% | 3353 fps | 98.9% |
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 106 powders for .300 Win. Mag. loaded with the .308 | 115gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,550 fps; across all powders the maximum-charge window runs from 2,175 fps to 3,550 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, 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 4350, Alliant Reloder-16, 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 60, Alliant Reloder-17, ReloadSwiss RS 52 rank at the top here: for .300 Win. 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 2700, Alliant Reloder-26, Bofors RP7 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.