Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:115 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.0
Load data in caliber .300 H&H Mag. with .308 | 115gr | Lehigh Defense Controlled Chaos bullet and 87 powders. The key underlying parameters are shown in the table above.
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>> | 88% | 56,347 psi | 90% | 3330 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,129 psi | 88% | 3350 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,607 psi | 88% | 3340 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,287 psi | 85% | 3353 fps | 99.9% |
| Accurate 4064 | <<locked>> | 94% | 54,331 psi | 87% | 3379 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,459 psi | 81% | 3363 fps | 96.7% |
| Accurate LT-30 | <<locked>> | 82% | 55,317 psi | 89% | 3271 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,695 psi | 89% | 3297 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,709 psi | 89% | 3415 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 94% | 53,316 psi | 85% | 3346 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,708 psi | 88% | 3366 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 88% | 54,679 psi | 88% | 3363 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,188 psi | 90% | 3494 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,405 psi | 89% | 3527 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,275 psi | 90% | 3432 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,840 psi | 90% | 3343 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,461 psi | 86% | 3389 fps | 98% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 3366 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,751 psi | 86% | 3491 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,984 psi | 88% | 3255 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,767 psi | 89% | 3422 fps | 98% |
| Bofors RP3 | <<locked>> | 94% | 53,243 psi | 85% | 3383 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,345 psi | 86% | 3301 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,012 psi | 87% | 3392 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,782 psi | 89% | 3497 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 84% | 55,201 psi | 89% | 3379 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,837 psi | 85% | 3340 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,752 psi | 88% | 3392 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 90% | 56,202 psi | 90% | 3428 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,281 psi | 73% | 3232 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,288 psi | 89% | 3455 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,809 psi | 56% | 2146 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,143 psi | 87% | 3373 fps | 98.9% |
| IMR 3031 | <<locked>> | 90% | 55,622 psi | 89% | 3428 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,130 psi | 90% | 3392 fps | 98.5% |
| IMR 4198 | <<locked>> | 84% | 56,014 psi | 90% | 3307 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,877 psi | 77% | 3294 fps | 96.3% |
| IMR 4895 | <<locked>> | 92% | 54,810 psi | 88% | 3432 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 88% | 54,708 psi | 88% | 3366 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 84% | 55,143 psi | 88% | 3356 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 90% | 55,172 psi | 88% | 3392 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,550 psi | 89% | 3340 fps | 98.8% |
| Lovex S062 | <<locked>> | 94% | 55,651 psi | 89% | 3389 fps | 99.5% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,027 psi | 88% | 3363 fps | 96.3% |
| Norma 201 | <<locked>> | 90% | 54,215 psi | 87% | 3356 fps | 99.4% |
| Norma 202 | <<locked>> | 90% | 54,723 psi | 88% | 3369 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,260 psi | 90% | 3442 fps | 98.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,937 psi | 80% | 3356 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 92% | 53,272 psi | 85% | 3399 fps | 98.3% |
| Ramshot TAC | <<locked>> | 88% | 55,448 psi | 89% | 3369 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,694 psi | 88% | 3392 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,144 psi | 90% | 3366 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,998 psi | 56% | 2188 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,288 psi | 87% | 3356 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,417 psi | 86% | 3461 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,577 psi | 86% | 3504 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,053 psi | 80% | 3376 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,143 psi | 88% | 3353 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,679 psi | 88% | 3353 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 96% | 53,084 psi | 85% | 3369 fps | 98.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,027 psi | 88% | 3363 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,172 psi | 88% | 3392 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,651 psi | 89% | 3389 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,954 psi | 87% | 3314 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,984 psi | 88% | 3438 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,359 psi | 86% | 3314 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,650 psi | 86% | 3337 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,128 psi | 87% | 3376 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,115 psi | 90% | 3310 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,028 psi | 90% | 3297 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 56,246 psi | 90% | 3406 fps | 99.7% |
| Somchem S335 | <<locked>> | 90% | 55,259 psi | 89% | 3301 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,113 psi | 85% | 3333 fps | 98.3% |
| Somchem S355 | <<locked>> | 96% | 53,519 psi | 86% | 3373 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,541 psi | 71% | 3291 fps | 98.6% |
| Vihtavuori N130 | <<locked>> | 86% | 55,912 psi | 90% | 3284 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,086 psi | 90% | 3297 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,998 psi | 87% | 3333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,332 psi | 89% | 3343 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,245 psi | 89% | 3356 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,576 psi | 84% | 3360 fps | 97% |
| Vihtavuori N530 | <<locked>> | 88% | 55,303 psi | 89% | 3369 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 92% | 53,722 psi | 86% | 3333 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,561 psi | 83% | 3356 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,824 psi | 86% | 3343 fps | 99.1% |
| Winchester 748 | <<locked>> | 88% | 54,897 psi | 88% | 3419 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,838 psi | 86% | 3383 fps | 99% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 43,874 psi | 70% | 3110 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,008 psi | 77% | 3222 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 36,405 psi | 58% | 2986 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 43,236 psi | 69% | 3156 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 34,389 psi | 55% | 2956 fps | 97.8% |
| Accurate 4350 | <<locked>> | 98% | 46,891 psi | 75% | 3294 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 80% | 51,996 psi | 83% | 3212 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,359 psi | 84% | 3238 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 40,350 psi | 65% | 3091 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 88% | 44,135 psi | 71% | 3156 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,351 psi | 68% | 3117 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 41,698 psi | 67% | 3136 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,182 psi | 79% | 3356 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,846 psi | 72% | 3301 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 38,247 psi | 61% | 3054 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,414 psi | 79% | 3235 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,249 psi | 66% | 3130 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 98% | 46,108 psi | 74% | 3301 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,828 psi | 65% | 3199 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,459 psi | 83% | 3196 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 45,397 psi | 73% | 3215 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 37,927 psi | 61% | 3054 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,295 psi | 71% | 3120 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,915 psi | 66% | 3123 fps | 97.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,773 psi | 72% | 3278 fps | 96% |
| Hodgdon H322 | <<locked>> | 80% | 48,283 psi | 77% | 3258 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,443 psi | 79% | 3278 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 47,790 psi | 77% | 3258 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,669 psi | 65% | 3107 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 39,842 psi | 64% | 3104 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,622 psi | 59% | 3048 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 41% | 1919 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,088 psi | 63% | 3051 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 39,624 psi | 64% | 3123 fps | 99.7% |
| IMR 4064 | <<locked>> | 84% | 40,843 psi | 65% | 3077 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 49,719 psi | 80% | 3202 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 44,657 psi | 72% | 3225 fps | 95.4% |
| IMR 4895 | <<locked>> | 82% | 39,494 psi | 63% | 3100 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 42,351 psi | 68% | 3117 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 80% | 47,805 psi | 77% | 3219 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 39,088 psi | 63% | 3071 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 40,799 psi | 65% | 3035 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 35,737 psi | 57% | 2959 fps | 95.3% |
| Lovex S065 | <<locked>> | 98% | 51,532 psi | 83% | 3301 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,494 psi | 63% | 3045 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 39,566 psi | 63% | 3064 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 40,582 psi | 65% | 3117 fps | 95.5% |
| Norma URP | <<locked>> | 98% | 46,601 psi | 75% | 3284 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 84% | 40,350 psi | 65% | 3123 fps | 95.1% |
| Ramshot TAC | <<locked>> | 86% | 51,996 psi | 83% | 3304 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,684 psi | 67% | 3127 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,948 psi | 74% | 3169 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 42% | 1965 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,543 psi | 76% | 3228 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,163 psi | 69% | 3248 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 33,199 psi | 53% | 2995 fps | 95.3% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 46,659 psi | 75% | 3307 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,308 psi | 69% | 3123 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 37,579 psi | 60% | 2989 fps | 96% |
| Rottweil R 903 | <<locked>> | 86% | 37,971 psi | 61% | 3048 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,532 psi | 83% | 3301 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,088 psi | 63% | 3071 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 35,737 psi | 57% | 2959 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,459 psi | 81% | 3248 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,018 psi | 67% | 3173 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,009 psi | 80% | 3258 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 46,688 psi | 75% | 3202 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,626 psi | 67% | 3114 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,988 psi | 66% | 3022 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,794 psi | 54% | 2851 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 45,788 psi | 73% | 3205 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 40,567 psi | 65% | 3022 fps | 99.4% |
| Somchem S341 | <<locked>> | 80% | 40,147 psi | 64% | 3064 fps | 95.2% |
| Somchem S355 | <<locked>> | 86% | 38,899 psi | 62% | 3061 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 34,171 psi | 55% | 3018 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 46,398 psi | 74% | 3120 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,147 psi | 66% | 3028 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,506 psi | 59% | 2989 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 37,579 psi | 60% | 2992 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 34,679 psi | 56% | 2923 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 45,788 psi | 73% | 3228 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 42,308 psi | 68% | 3110 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,260 psi | 58% | 2966 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 96% | 45,252 psi | 73% | 3228 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 38,305 psi | 61% | 3015 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,582 psi | 67% | 3153 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,305 psi | 61% | 3051 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 105 powders for .300 H&H Mag. loaded with the .308 | 115gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,527 fps; across all powders the maximum-charge window runs from 2,146 fps to 3,527 fps. Accurate 4350 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 (430 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 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. As outliers, Accurate 2700, Alliant Reloder-23, 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.