Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 90gr | Impala LWHV LS bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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.
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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 2015 | <<locked>> | 86% | 54,563 psi | 90% | 3737 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,403 psi | 88% | 3743 fps | 99.8% |
| Accurate 2495 | <<locked>> | 90% | 54,056 psi | 89% | 3757 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,114 psi | 90% | 3812 fps | 99.8% |
| Accurate 4064 | <<locked>> | 92% | 53,650 psi | 88% | 3793 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,605 psi | 86% | 3816 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 88% | 53,664 psi | 88% | 3809 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 94% | 54,273 psi | 89% | 3786 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,533 psi | 86% | 3757 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 86% | 52,388 psi | 86% | 3773 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,679 psi | 88% | 3894 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,910 psi | 87% | 3904 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,433 psi | 89% | 3825 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,940 psi | 89% | 3760 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,013 psi | 90% | 3845 fps | 97.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,415 psi | 83% | 3802 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 51,750 psi | 85% | 3865 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,301 psi | 88% | 3796 fps | 96.7% |
| Bofors RP3 | <<locked>> | 92% | 51,808 psi | 85% | 3776 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,418 psi | 89% | 3750 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,924 psi | 85% | 3780 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,953 psi | 87% | 3878 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 82% | 52,634 psi | 86% | 3780 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,056 psi | 89% | 3793 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 88% | 54,099 psi | 89% | 3825 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,804 psi | 77% | 3661 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,837 psi | 87% | 3839 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,012 psi | 57% | 2500 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,779 psi | 85% | 3753 fps | 97.8% |
| IMR 3031 | <<locked>> | 88% | 53,185 psi | 87% | 3835 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,766 psi | 88% | 3773 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 53,243 psi | 87% | 3714 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 52,866 psi | 87% | 3822 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 86% | 52,533 psi | 86% | 3757 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 82% | 53,229 psi | 87% | 3743 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 88% | 53,403 psi | 88% | 3786 fps | 99.7% |
| Lovex S060 | <<locked>> | 88% | 53,272 psi | 87% | 3720 fps | 97.7% |
| Lovex S062 | <<locked>> | 92% | 53,998 psi | 89% | 3786 fps | 98.9% |
| Norma 201 | <<locked>> | 88% | 52,881 psi | 87% | 3757 fps | 98.7% |
| Norma 202 | <<locked>> | 88% | 52,852 psi | 87% | 3770 fps | 99.9% |
| Norma 203B | <<locked>> | 92% | 54,259 psi | 89% | 3835 fps | 97.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,401 psi | 84% | 3793 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 92% | 54,534 psi | 90% | 3845 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,504 psi | 86% | 3776 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,780 psi | 88% | 3743 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 58% | 2556 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,953 psi | 85% | 3743 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,607 psi | 90% | 3917 fps | 97.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,998 psi | 90% | 3960 fps | 99.9% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,170 psi | 86% | 3822 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,012 psi | 89% | 3766 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 90% | 53,185 psi | 87% | 3750 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 96% | 55,027 psi | 90% | 3829 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,403 psi | 88% | 3786 fps | 99.7% |
| Shooters World Precision | <<locked>> | 92% | 53,998 psi | 89% | 3786 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,939 psi | 87% | 3819 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,070 psi | 89% | 3773 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,982 psi | 85% | 3753 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,027 psi | 89% | 3704 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,954 psi | 89% | 3688 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 54,056 psi | 89% | 3793 fps | 99% |
| Somchem S335 | <<locked>> | 88% | 53,722 psi | 88% | 3701 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,447 psi | 89% | 3776 fps | 97.8% |
| Somchem S355 | <<locked>> | 94% | 51,967 psi | 85% | 3760 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,180 psi | 76% | 3724 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 84% | 53,693 psi | 88% | 3684 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,838 psi | 88% | 3694 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,098 psi | 86% | 3734 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,258 psi | 87% | 3734 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,287 psi | 87% | 3737 fps | 99.2% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 3796 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 86% | 53,142 psi | 87% | 3757 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 90% | 51,851 psi | 85% | 3717 fps | 99.8% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,476 psi | 88% | 3799 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,895 psi | 85% | 3704 fps | 98.2% |
| Winchester 748 | <<locked>> | 86% | 52,460 psi | 86% | 3802 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,793 psi | 85% | 3760 fps | 98% |
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 2015 | <<locked>> | 80% | 45,556 psi | 75% | 3560 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,864 psi | 82% | 3678 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 39,392 psi | 65% | 3451 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 44,918 psi | 74% | 3599 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 37,057 psi | 61% | 3409 fps | 97.6% |
| Accurate 4350 | <<locked>> | 98% | 48,994 psi | 80% | 3740 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 82% | 44,498 psi | 73% | 3596 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 88% | 45,310 psi | 74% | 3589 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,511 psi | 71% | 3550 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,004 psi | 71% | 3589 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,198 psi | 82% | 3819 fps | 97.5% |
| Alliant Power Pro 2000-MR | 77.6 gr | 88% | 49,458 psi | 81% | 3822 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 39,856 psi | 65% | 3488 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,763 psi | 83% | 3701 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 45,614 psi | 75% | 3638 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 47,514 psi | 78% | 3734 fps | 95% |
| Alliant Reloder-17 | 78.2 gr | 90% | 42,467 psi | 70% | 3632 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 49,792 psi | 82% | 3720 fps | 95.8% |
| Bofors RP3 | <<locked>> | 84% | 39,929 psi | 66% | 3494 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,440 psi | 75% | 3556 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,670 psi | 70% | 3566 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,050 psi | 76% | 3720 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 49,472 psi | 81% | 3714 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 50,734 psi | 83% | 3727 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 80% | 42,047 psi | 69% | 3543 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,394 psi | 68% | 3524 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,625 psi | 67% | 3550 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 43% | 2251 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,975 psi | 71% | 3550 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 40,973 psi | 67% | 3573 fps | 99.5% |
| IMR 4064 | <<locked>> | 86% | 44,817 psi | 74% | 3573 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,183 psi | 82% | 3658 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 43,700 psi | 72% | 3609 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 43,511 psi | 71% | 3550 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 80% | 49,937 psi | 82% | 3678 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 40,857 psi | 67% | 3510 fps | 97.7% |
| Lovex S060 | <<locked>> | 82% | 44,498 psi | 73% | 3527 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 39,784 psi | 65% | 3458 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 41,452 psi | 68% | 3491 fps | 96.1% |
| Norma 202 | <<locked>> | 80% | 41,234 psi | 68% | 3507 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 44,918 psi | 74% | 3625 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 48,370 psi | 79% | 3730 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 44,556 psi | 73% | 3622 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,120 psi | 71% | 3560 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,369 psi | 78% | 3606 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 43% | 2303 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,718 psi | 80% | 3675 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 47,572 psi | 78% | 3766 fps | 95.7% |
| ReloadSwiss RS 60 | 72.9 gr | 84% | 36,985 psi | 61% | 3494 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,544 psi | 80% | 3747 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 45,455 psi | 75% | 3583 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 39,552 psi | 65% | 3428 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 88% | 42,656 psi | 70% | 3556 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,857 psi | 67% | 3510 fps | 97.7% |
| Shooters World Precision | <<locked>> | 82% | 39,784 psi | 65% | 3458 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 43,468 psi | 71% | 3602 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,763 psi | 83% | 3711 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 43,033 psi | 71% | 3547 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,308 psi | 69% | 3451 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,128 psi | 58% | 3264 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 47,471 psi | 78% | 3652 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 42,279 psi | 69% | 3458 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 44,599 psi | 73% | 3563 fps | 95.5% |
| Somchem S355 | <<locked>> | 86% | 40,785 psi | 67% | 3497 fps | 95% |
| Somchem S365 | <<locked>> | 94% | 38,319 psi | 63% | 3517 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,558 psi | 78% | 3570 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,293 psi | 69% | 3458 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 38,101 psi | 63% | 3428 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 38,899 psi | 64% | 3415 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 84% | 36,506 psi | 60% | 3346 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 98% | 50,531 psi | 83% | 3724 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,801 psi | 72% | 3550 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,869 psi | 62% | 3392 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 98% | 50,140 psi | 82% | 3730 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,641 psi | 70% | 3494 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 42,873 psi | 70% | 3589 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,496 psi | 70% | 3550 fps | 95.7% |
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 100 powders for .300 Blaser Mag. loaded with the .308 | 90gr | Impala LWHV LS. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,960 fps; across all powders the maximum-charge window runs from 2,500 fps to 3,960 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 Blaser Mag. with the .308 | 90gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. 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.