Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 168gr | Nosler Expansion Tip bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 51,895 psi | 85% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,853 psi | 88% | 2907 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,778 psi | 83% | 2940 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 52,504 psi | 86% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,200 psi | 87% | 3002 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 52,141 psi | 86% | 3087 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 86% | 53,258 psi | 87% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,549 psi | 90% | 3045 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,228 psi | 86% | 3031 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,127 psi | 86% | 3051 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,563 psi | 90% | 3041 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,867 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,027 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,215 psi | 89% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,750 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,766 psi | 88% | 3031 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,778 psi | 83% | 3028 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,877 psi | 79% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,727 psi | 69% | 2877 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,126 psi | 84% | 3100 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,528 psi | 76% | 2946 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 54,404 psi | 89% | 2969 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,778 psi | 83% | 3028 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 54,012 psi | 89% | 2949 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 55,027 psi | 90% | 2986 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 52,069 psi | 85% | 2999 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 52,185 psi | 86% | 2956 fps | 97.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,897 psi | 90% | 3018 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,418 psi | 89% | 2979 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,562 psi | 86% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,953 psi | 85% | 3031 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 59% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,592 psi | 88% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,750 psi | 87% | 2913 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,924 psi | 85% | 2890 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 51,692 psi | 85% | 2930 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,547 psi | 86% | 2927 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 53,751 psi | 88% | 2992 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 51,924 psi | 85% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,143 psi | 89% | 2969 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 54,462 psi | 89% | 2900 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,649 psi | 86% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,315 psi | 86% | 2923 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 53,447 psi | 88% | 2963 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,047 psi | 69% | 2782 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 53,983 psi | 89% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,708 psi | 90% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,272 psi | 87% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,170 psi | 86% | 2982 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 53,954 psi | 89% | 3117 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 52,127 psi | 86% | 2986 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,157 psi | 89% | 2989 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,806 psi | 82% | 3012 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 94% | 54,534 psi | 90% | 3041 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,121 psi | 72% | 2877 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 60% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,488 psi | 85% | 2913 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,926 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,085 psi | 90% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,040 psi | 87% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,822 psi | 85% | 3051 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,683 psi | 67% | 2890 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 84% | 54,723 psi | 90% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,520 psi | 90% | 2963 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,779 psi | 87% | 2956 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 98% | 52,968 psi | 87% | 3018 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 54,012 psi | 89% | 2949 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,315 psi | 86% | 2923 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 52,649 psi | 86% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,447 psi | 88% | 2963 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,765 psi | 87% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,896 psi | 88% | 2946 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,984 psi | 90% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,533 psi | 86% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,996 psi | 85% | 2871 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,489 psi | 86% | 3012 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 54,621 psi | 90% | 2844 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,665 psi | 90% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,607 psi | 90% | 2949 fps | 96.1% |
| Somchem S365 | <<locked>> | 96% | 54,679 psi | 90% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,476 psi | 88% | 2989 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 84% | 54,926 psi | 90% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,083 psi | 86% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,547 psi | 86% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,462 psi | 89% | 2986 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,342 psi | 81% | 2904 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 53,650 psi | 88% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,330 psi | 88% | 2986 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 3041 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 54,418 psi | 89% | 3104 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,244 psi | 89% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,301 psi | 86% | 3002 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,033 psi | 71% | 3015 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,896 psi | 88% | 2953 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,838 psi | 88% | 2986 fps | 97.9% |
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% | 48,472 psi | 80% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,079 psi | 77% | 2792 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 33,315 psi | 55% | 2589 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,919 psi | 75% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,664 psi | 57% | 2641 fps | 97.5% |
| Accurate High Country | <<locked>> | 94% | 45,121 psi | 74% | 2956 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 44,135 psi | 72% | 2769 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,759 psi | 73% | 2864 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 98% | 48,791 psi | 80% | 2969 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,472 psi | 80% | 2989 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 41,959 psi | 69% | 2805 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,411 psi | 73% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,384 psi | 78% | 2864 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,389 psi | 56% | 2657 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,783 psi | 64% | 2789 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,437 psi | 68% | 2795 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,452 psi | 68% | 2844 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,498 psi | 44% | 2451 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,213 psi | 53% | 2631 fps | 95% |
| Alliant Reloder-26 | 67.1 gr | 84% | 30,385 psi | 50% | 2628 fps | 95.2% |
| Bofors RP15 | <<locked>> | 98% | 43,482 psi | 71% | 2884 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 44,425 psi | 73% | 2802 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,452 psi | 68% | 2844 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,204 psi | 64% | 2667 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 44,875 psi | 74% | 2812 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 37,014 psi | 61% | 2694 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 42,888 psi | 70% | 2782 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,271 psi | 84% | 2959 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,778 psi | 52% | 2549 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,197 psi | 81% | 2913 fps | 100% |
| Hodgdon Superformance | 67.5 gr | 82% | 38,682 psi | 64% | 2762 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 44% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,227 psi | 82% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,398 psi | 76% | 2805 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,704 psi | 80% | 2835 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,045 psi | 66% | 2707 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,770 psi | 67% | 2703 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 33,649 psi | 55% | 2598 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 48,617 psi | 80% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,734 psi | 83% | 2913 fps | 95.5% |
| Lovex S060 | <<locked>> | 80% | 51,068 psi | 84% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,398 psi | 76% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,072 psi | 63% | 2648 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,361 psi | 60% | 2625 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 34,287 psi | 56% | 2615 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,531 psi | 83% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,459 psi | 84% | 2864 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,717 psi | 77% | 2848 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,409 psi | 70% | 2795 fps | 95% |
| Norma MRP | <<locked>> | 90% | 37,942 psi | 62% | 2795 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,911 psi | 57% | 2644 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 47,050 psi | 77% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 46,166 psi | 76% | 2943 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 33,895 psi | 56% | 2625 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 41,118 psi | 68% | 2815 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 45% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,063 psi | 74% | 2795 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,271 psi | 84% | 2986 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,278 psi | 68% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,606 psi | 57% | 2661 fps | 97.1% |
| ReloadSwiss RS 70 | 63.3 gr | 80% | 33,895 psi | 56% | 2664 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,840 psi | 62% | 2815 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 48,167 psi | 79% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,727 psi | 69% | 2746 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,383 psi | 76% | 2841 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 43,047 psi | 71% | 2835 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,204 psi | 64% | 2667 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,072 psi | 63% | 2648 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 46,398 psi | 76% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,361 psi | 60% | 2625 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,091 psi | 71% | 2805 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,546 psi | 83% | 2894 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,663 psi | 85% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,497 psi | 71% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,405 psi | 61% | 2592 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,641 psi | 70% | 2828 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,242 psi | 84% | 2795 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,148 psi | 69% | 2746 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 50,995 psi | 84% | 2890 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 31,285 psi | 51% | 2595 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 38,261 psi | 63% | 2700 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 48,356 psi | 79% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,762 psi | 80% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,335 psi | 66% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,230 psi | 59% | 2641 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 40,190 psi | 66% | 2730 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 46,949 psi | 77% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,694 psi | 59% | 2641 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 28,921 psi | 47% | 2526 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 50,879 psi | 84% | 3041 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,708 psi | 59% | 2615 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 37,173 psi | 61% | 2700 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 24,845 psi | 41% | 2467 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,502 psi | 83% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,352 psi | 71% | 2802 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 95 powders for .300 Blaser Mag. loaded with the .308 | 168gr | Nosler Expansion Tip. Norma MRP delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,117 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 Blaser Mag. with the .308 | 168gr | Nosler Expansion Tip 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.