Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 142gr | IBEX TRD bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and ReloadSwiss RS 60.
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% | 55,622 psi | 89% | 3048 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,898 psi | 90% | 3074 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,240 psi | 79% | 3041 fps | 97.3% |
| Accurate 4064 | <<locked>> | 86% | 55,506 psi | 89% | 3094 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,853 psi | 88% | 3173 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 82% | 53,737 psi | 86% | 3104 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 54,694 psi | 88% | 3104 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,738 psi | 89% | 3104 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,272 psi | 85% | 3222 fps | 99.6% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,434 psi | 89% | 3189 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,347 psi | 89% | 3133 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,738 psi | 89% | 3153 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,984 psi | 88% | 3225 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,260 psi | 90% | 3261 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 3064 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,808 psi | 83% | 3251 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,432 psi | 86% | 3114 fps | 99.3% |
| Bofors RP3 | <<locked>> | 86% | 53,098 psi | 85% | 3100 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,883 psi | 90% | 3117 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,883 psi | 90% | 3136 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,476 psi | 86% | 3104 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 92% | 53,113 psi | 85% | 3153 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 90% | 53,330 psi | 86% | 3110 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 54,302 psi | 87% | 3114 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,114 psi | 88% | 3146 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,940 psi | 86% | 3150 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,316 psi | 85% | 3182 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 58% | 1972 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,056 psi | 88% | 3114 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,650 psi | 88% | 3104 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,128 psi | 87% | 3087 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,679 psi | 86% | 3054 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 56,014 psi | 90% | 3136 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,969 psi | 87% | 3087 fps | 97.1% |
| IMR 4831 | <<locked>> | 96% | 54,926 psi | 88% | 3159 fps | 99.5% |
| IMR 4895 | <<locked>> | 84% | 53,693 psi | 86% | 3130 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 55,738 psi | 89% | 3104 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,346 psi | 87% | 3087 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,941 psi | 90% | 3077 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 54,766 psi | 88% | 3091 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,244 psi | 87% | 3091 fps | 98.4% |
| Lovex S070 | <<locked>> | 94% | 55,274 psi | 89% | 3130 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 56,434 psi | 90% | 3107 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,432 psi | 86% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,013 psi | 88% | 3140 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,256 psi | 82% | 3196 fps | 96.7% |
| Norma URP | <<locked>> | 94% | 53,388 psi | 86% | 3153 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 86% | 55,521 psi | 89% | 3163 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 55,288 psi | 89% | 3199 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 55,999 psi | 90% | 3120 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,912 psi | 90% | 3140 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,825 psi | 59% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,432 psi | 86% | 3081 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,318 psi | 90% | 3225 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,753 psi | 89% | 3258 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,273 psi | 87% | 3189 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,997 psi | 85% | 3209 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 84% | 53,737 psi | 86% | 3054 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,362 psi | 90% | 3146 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 55,883 psi | 90% | 3117 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,244 psi | 87% | 3091 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,346 psi | 87% | 3087 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,766 psi | 88% | 3091 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,274 psi | 89% | 3130 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,911 psi | 86% | 3146 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,143 psi | 88% | 3104 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,622 psi | 89% | 3127 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,635 psi | 86% | 2986 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,027 psi | 87% | 2982 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,041 psi | 87% | 3035 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 53,577 psi | 86% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,462 psi | 87% | 3091 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 56,318 psi | 90% | 3140 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,288 psi | 89% | 3215 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 3143 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 82% | 53,853 psi | 86% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,403 psi | 86% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,621 psi | 86% | 3028 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,056 psi | 87% | 3061 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,361 psi | 89% | 3146 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 56,304 psi | 90% | 3104 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,448 psi | 89% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,694 psi | 88% | 3153 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 3150 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,158 psi | 88% | 3114 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,359 psi | 86% | 3156 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,698 psi | 67% | 3094 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,579 psi | 89% | 3133 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% | 49,298 psi | 79% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 49,255 psi | 79% | 2953 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 43,221 psi | 69% | 2927 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 46,485 psi | 75% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 37,159 psi | 60% | 2812 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,763 psi | 81% | 3048 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 43,105 psi | 69% | 2881 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,649 psi | 84% | 3051 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,557 psi | 75% | 3091 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,069 psi | 83% | 3127 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,540 psi | 70% | 2917 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,514 psi | 75% | 2986 fps | 98.7% |
| Alliant Reloder-16 | 59.2 gr | 82% | 36,216 psi | 58% | 2812 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,101 psi | 61% | 2890 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,271 psi | 52% | 2723 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,159 psi | 60% | 2913 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,096 psi | 80% | 3051 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 43,990 psi | 71% | 2930 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 49,617 psi | 80% | 2999 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,330 psi | 84% | 3081 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,179 psi | 71% | 2923 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 46,920 psi | 75% | 3035 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 50,212 psi | 81% | 3051 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,256 psi | 82% | 3061 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,734 psi | 51% | 2651 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,427 psi | 76% | 3031 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 46,499 psi | 75% | 3048 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 44% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,878 psi | 78% | 3005 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 51,430 psi | 82% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,324 psi | 73% | 2920 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,529 psi | 76% | 2940 fps | 95.8% |
| IMR 4350 | <<locked>> | 90% | 46,862 psi | 75% | 2969 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,208 psi | 72% | 2917 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 35,636 psi | 57% | 2759 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 47,688 psi | 76% | 3018 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 52,649 psi | 84% | 3051 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,039 psi | 82% | 3035 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,777 psi | 80% | 2969 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 45,745 psi | 73% | 2930 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,480 psi | 65% | 2815 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 46,296 psi | 74% | 2959 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,125 psi | 80% | 3002 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 50,212 psi | 81% | 3002 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,905 psi | 74% | 2972 fps | 99% |
| Norma MRP | <<locked>> | 98% | 47,906 psi | 77% | 3130 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 36,738 psi | 59% | 2805 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 45,513 psi | 73% | 2982 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 43,033 psi | 69% | 2956 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,547 psi | 84% | 3058 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,417 psi | 84% | 3084 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 44% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,193 psi | 71% | 2900 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,327 psi | 79% | 3104 fps | 99.1% |
| ReloadSwiss RS 60 | 62.2 gr | 80% | 40,321 psi | 65% | 2959 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,434 psi | 58% | 2818 fps | 95% |
| ReloadSwiss RS 70 | 67.9 gr | 86% | 40,886 psi | 66% | 2946 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 47,747 psi | 77% | 2946 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,466 psi | 66% | 2867 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 49,617 psi | 80% | 2999 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,480 psi | 65% | 2815 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,039 psi | 82% | 3035 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,745 psi | 73% | 2930 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 46,296 psi | 74% | 2959 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,858 psi | 67% | 2910 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,677 psi | 83% | 3041 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,052 psi | 79% | 3012 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,560 psi | 81% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,670 psi | 68% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,918 psi | 72% | 2864 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,604 psi | 81% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,995 psi | 82% | 3031 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 41,945 psi | 67% | 2871 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 31,314 psi | 50% | 2700 fps | 97% |
| Somchem S385 | <<locked>> | 96% | 48,341 psi | 78% | 3025 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,836 psi | 82% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,355 psi | 76% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,558 psi | 76% | 2927 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,842 psi | 64% | 2795 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 35,839 psi | 57% | 2746 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 52,881 psi | 85% | 3048 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,050 psi | 74% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,840 psi | 61% | 2805 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 35,259 psi | 57% | 2812 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,331 psi | 57% | 2713 fps | 97.3% |
| Winchester 760 | <<locked>> | 88% | 47,065 psi | 75% | 3035 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,661 psi | 49% | 2746 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,950 psi | 78% | 3022 fps | 99.7% |
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 88 powders for .300 Win. Mag. loaded with the .308 | 142gr | IBEX TRD. Alliant Reloder-17 delivers the highest muzzle velocity at 3,261 fps; across all powders the maximum-charge window runs from 1,972 fps to 3,261 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, 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. Alliant Reloder-16, ReloadSwiss RS 70, ReloadSwiss RS 60 rank at the top here: for .300 Win. Mag. with the .308 | 142gr | IBEX TRD 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.