Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 142gr | IBEX TRD bullet and 81 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 Alliant Reloder-26.
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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 54,244 psi | 89% | 3087 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,288 psi | 89% | 3120 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,822 psi | 85% | 3159 fps | 98.4% |
| Accurate 4064 | <<locked>> | 84% | 54,273 psi | 89% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,998 psi | 89% | 3232 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 86% | 53,447 psi | 88% | 3153 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 98% | 54,317 psi | 89% | 3245 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,924 psi | 85% | 3271 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,230 psi | 89% | 3245 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,085 psi | 89% | 3179 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,505 psi | 89% | 3205 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,809 psi | 88% | 3281 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,042 psi | 90% | 3310 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,490 psi | 88% | 3232 fps | 96.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,836 psi | 83% | 3232 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,109 psi | 79% | 3179 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,525 psi | 70% | 3077 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 3383 fps | 99.8% |
| Bofors RP3 | <<locked>> | 84% | 51,953 psi | 85% | 3146 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,836 psi | 83% | 3232 fps | 96% |
| Bofors RP7 | <<locked>> | 90% | 54,505 psi | 89% | 3166 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 84% | 52,214 psi | 86% | 3153 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 90% | 52,040 psi | 85% | 3209 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 88% | 52,127 psi | 86% | 3163 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,099 psi | 89% | 3199 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,576 psi | 86% | 3196 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,967 psi | 85% | 3235 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 60% | 2021 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,679 psi | 88% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,997 psi | 87% | 3136 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,112 psi | 86% | 3100 fps | 97.6% |
| IMR 4350 | <<locked>> | 94% | 54,897 psi | 90% | 3192 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,707 psi | 87% | 3140 fps | 97.6% |
| IMR 4831 | <<locked>> | 94% | 53,983 psi | 89% | 3212 fps | 99.7% |
| IMR 4895 | <<locked>> | 82% | 52,475 psi | 86% | 3179 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 54,534 psi | 90% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,490 psi | 88% | 3136 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,011 psi | 87% | 3143 fps | 98.8% |
| Lovex S070 | <<locked>> | 92% | 54,114 psi | 89% | 3182 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,569 psi | 72% | 3002 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 54,897 psi | 90% | 3150 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,882 psi | 88% | 3192 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,011 psi | 85% | 3179 fps | 95.8% |
| Norma MRPᴾ | <<locked>> | 100% | 53,940 psi | 89% | 3327 fps | 98.1% |
| Norma URP | <<locked>> | 92% | 52,315 psi | 86% | 3205 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 84% | 54,056 psi | 89% | 3209 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,404 psi | 89% | 3255 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 61% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,996 psi | 85% | 3127 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,984 psi | 90% | 3274 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,621 psi | 90% | 3310 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,272 psi | 87% | 3245 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,706 psi | 85% | 3261 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 82% | 52,344 psi | 86% | 3100 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,011 psi | 85% | 3143 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 52,692 psi | 87% | 3219 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 90% | 54,505 psi | 89% | 3166 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,011 psi | 87% | 3143 fps | 98.8% |
| Shooters World Precision | <<locked>> | 84% | 53,490 psi | 88% | 3136 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,114 psi | 89% | 3182 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,794 psi | 87% | 3192 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,099 psi | 89% | 3173 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,823 psi | 87% | 3025 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,808 psi | 87% | 3084 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,199 psi | 86% | 3212 fps | 96.3% |
| Somchem S355 | <<locked>> | 86% | 52,083 psi | 86% | 3140 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,578 psi | 90% | 3268 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,969 psi | 89% | 3202 fps | 97.5% |
| Vihtavuori N135 | <<locked>> | 82% | 52,388 psi | 86% | 3064 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,330 psi | 86% | 3071 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,895 psi | 87% | 3107 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,418 psi | 89% | 3199 fps | 99.6% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,588 psi | 81% | 3104 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,114 psi | 89% | 3117 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,722 psi | 88% | 3205 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,998 psi | 89% | 3271 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,983 psi | 89% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,272 psi | 86% | 3212 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,801 psi | 72% | 3228 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,273 psi | 89% | 3182 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,490 psi | 88% | 3179 fps | 96.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 51,082 psi | 84% | 3038 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,950 psi | 79% | 2999 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 40,118 psi | 66% | 2923 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,283 psi | 79% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,608 psi | 60% | 2867 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 80% | 44,556 psi | 73% | 2982 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 51,140 psi | 84% | 3186 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,457 psi | 80% | 3202 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 51,097 psi | 84% | 3186 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,136 psi | 74% | 3015 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,240 psi | 79% | 3087 fps | 99.4% |
| Alliant Reloder-16 | 60.4 gr | 80% | 35,302 psi | 58% | 2861 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,682 psi | 65% | 3005 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,430 psi | 83% | 3176 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,819 psi | 79% | 3169 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,878 psi | 49% | 2717 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,753 psi | 62% | 2953 fps | 95.3% |
| Alliant Reloder-26 | 73.4 gr | 88% | 36,521 psi | 60% | 2972 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 45,759 psi | 75% | 3035 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,819 psi | 79% | 3169 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 45,716 psi | 75% | 2995 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 45,948 psi | 75% | 3031 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 43,134 psi | 71% | 3025 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 48,950 psi | 80% | 3100 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,011 psi | 54% | 2756 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,298 psi | 81% | 3136 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 45,397 psi | 75% | 3100 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 45% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,604 psi | 83% | 3104 fps | 99.9% |
| IMR 4064 | <<locked>> | 80% | 46,847 psi | 77% | 3018 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,197 psi | 81% | 3045 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 45,847 psi | 75% | 3022 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,106 psi | 72% | 2966 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 35,128 psi | 58% | 2815 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 49,472 psi | 81% | 3123 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 51,445 psi | 84% | 3068 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 47,543 psi | 78% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,566 psi | 65% | 2861 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 42,772 psi | 70% | 2956 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 38,537 psi | 63% | 2887 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 51,764 psi | 85% | 3097 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,630 psi | 78% | 3077 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,791 psi | 80% | 3120 fps | 95% |
| Norma MRP | <<locked>> | 94% | 44,251 psi | 73% | 3130 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 36,085 psi | 59% | 2854 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 47,398 psi | 78% | 3091 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 39,639 psi | 65% | 2949 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 46% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,992 psi | 76% | 3009 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,459 psi | 84% | 3212 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,974 psi | 69% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,824 psi | 59% | 2874 fps | 95.8% |
| ReloadSwiss RS 70 | 67.8 gr | 82% | 37,463 psi | 62% | 2933 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 49,371 psi | 81% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,236 psi | 71% | 2976 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 96% | 49,472 psi | 81% | 3156 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 45,716 psi | 75% | 2995 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,566 psi | 65% | 2861 fps | 95.9% |
| Shooters World Precision | <<locked>> | 80% | 47,543 psi | 78% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 42,772 psi | 70% | 2956 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,627 psi | 72% | 3018 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,850 psi | 83% | 3114 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,208 psi | 73% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,350 psi | 68% | 2854 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,008 psi | 80% | 3153 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 43,482 psi | 71% | 2972 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 32,692 psi | 54% | 2808 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 44,599 psi | 73% | 3022 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 49,255 psi | 81% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,356 psi | 81% | 3022 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,423 psi | 68% | 2897 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,391 psi | 61% | 2854 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 46,412 psi | 76% | 3045 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,834 psi | 79% | 3012 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,028 psi | 61% | 2854 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 32,808 psi | 54% | 2812 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,651 psi | 60% | 2818 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 43,134 psi | 71% | 3025 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,514 psi | 47% | 2749 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,734 psi | 83% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,299 psi | 83% | 3123 fps | 95.5% |
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 81 powders for .300 Blaser Mag. loaded with the .308 | 142gr | IBEX TRD. Alliant Reloder-26 delivers the highest muzzle velocity at 3,383 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,383 fps. Accurate 3100 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, 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 Reloder-22, 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, Alliant Reloder-26 rank at the top here: for .300 Blaser 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.