Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 155.8gr | Peregrine Glider GRM 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-16 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.
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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% | 56,347 psi | 88% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,549 psi | 85% | 2992 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 3025 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 56,623 psi | 89% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,172 psi | 85% | 3087 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 56,028 psi | 88% | 3068 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,537 psi | 90% | 3074 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,738 psi | 87% | 3133 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,029 psi | 89% | 3205 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,534 psi | 85% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,723 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,114 psi | 86% | 3150 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,652 psi | 89% | 3176 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,897 psi | 86% | 3117 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 3107 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,878 psi | 77% | 3045 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,511 psi | 67% | 2949 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3251 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,304 psi | 88% | 3084 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 55,347 psi | 87% | 3058 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 3107 fps | 97.1% |
| Bofors RP7 | <<locked>> | 90% | 54,897 psi | 86% | 3038 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 86% | 55,840 psi | 88% | 3074 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 56,710 psi | 89% | 3143 fps | 99% |
| Hodgdon H4350 | <<locked>> | 90% | 56,536 psi | 89% | 3104 fps | 98% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3123 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 56,652 psi | 89% | 3077 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,463 psi | 87% | 3068 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,232 psi | 90% | 3114 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,493 psi | 90% | 3186 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 57% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,317 psi | 85% | 3022 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,334 psi | 90% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,826 psi | 89% | 3054 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,130 psi | 88% | 3035 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 55,970 psi | 88% | 3071 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,811 psi | 89% | 3071 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 54,737 psi | 86% | 3081 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 56,173 psi | 88% | 3094 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,391 psi | 88% | 3035 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,056 psi | 86% | 2989 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,956 psi | 89% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,507 psi | 89% | 3061 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 54,331 psi | 85% | 3048 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,801 psi | 67% | 2854 fps | 97.3% |
| Norma 201 | <<locked>> | 82% | 54,592 psi | 86% | 3005 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,521 psi | 87% | 3005 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,609 psi | 90% | 3104 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,855 psi | 89% | 3127 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 55,288 psi | 87% | 3202 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 56,797 psi | 89% | 3130 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,998 psi | 86% | 3077 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,564 psi | 87% | 3127 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 57% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,927 psi | 88% | 3058 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,869 psi | 88% | 3136 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,028 psi | 88% | 3169 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,215 psi | 85% | 3110 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,913 psi | 89% | 3202 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,216 psi | 87% | 3005 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,448 psi | 87% | 3054 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,406 psi | 90% | 3100 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 53,983 psi | 85% | 3100 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,897 psi | 86% | 3038 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,507 psi | 89% | 3061 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,391 psi | 88% | 3035 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,956 psi | 89% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,331 psi | 85% | 3048 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,290 psi | 90% | 3117 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,508 psi | 90% | 3071 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,723 psi | 86% | 3038 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,651 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,623 psi | 89% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,536 psi | 89% | 3015 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 3156 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 55,216 psi | 87% | 2933 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,246 psi | 90% | 3058 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,361 psi | 87% | 3048 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,014 psi | 88% | 3133 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,534 psi | 85% | 3071 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 56,188 psi | 88% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,666 psi | 87% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,115 psi | 88% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,811 psi | 89% | 3022 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,317 psi | 87% | 3071 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,488 psi | 79% | 2986 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,346 psi | 85% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,389 psi | 85% | 3071 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3130 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3189 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,259 psi | 87% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,927 psi | 89% | 3146 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,179 psi | 69% | 3094 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,824 psi | 86% | 3041 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,998 psi | 86% | 3071 fps | 97.4% |
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% | 49,313 psi | 77% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,718 psi | 75% | 2871 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 36,463 psi | 57% | 2713 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,746 psi | 73% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,389 psi | 55% | 2710 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,707 psi | 83% | 3012 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,686 psi | 70% | 2851 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 45,484 psi | 71% | 2940 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,298 psi | 77% | 3071 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,933 psi | 70% | 2874 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,182 psi | 76% | 2949 fps | 99.7% |
| Alliant Reloder-16 | 62 gr | 80% | 34,867 psi | 55% | 2723 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,581 psi | 62% | 2861 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,976 psi | 70% | 2930 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,252 psi | 71% | 2979 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,790 psi | 45% | 2566 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,027 psi | 55% | 2756 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 33,417 psi | 52% | 2756 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,576 psi | 82% | 3022 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 44,947 psi | 70% | 2877 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 45,252 psi | 71% | 2979 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 42,380 psi | 66% | 2799 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,513 psi | 71% | 2890 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 40,205 psi | 63% | 2822 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 43,555 psi | 68% | 2858 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 53,345 psi | 84% | 3061 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 53,330 psi | 84% | 3022 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,329 psi | 51% | 2615 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,937 psi | 78% | 2999 fps | 100% |
| Hodgdon Superformance | 74.1 gr | 84% | 42,496 psi | 67% | 2904 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,850 psi | 80% | 2966 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,766 psi | 84% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,978 psi | 74% | 2887 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,356 psi | 77% | 2917 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 43,381 psi | 68% | 2838 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,350 psi | 65% | 2776 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 34,084 psi | 53% | 2661 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 49,458 psi | 78% | 2979 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 52,779 psi | 83% | 2982 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,634 psi | 81% | 2933 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,992 psi | 74% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,711 psi | 61% | 2720 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 39,334 psi | 62% | 2749 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 37,449 psi | 59% | 2736 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,329 psi | 80% | 2953 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,982 psi | 81% | 2949 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,529 psi | 74% | 2933 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 46,209 psi | 72% | 2930 fps | 95.1% |
| Norma MRP | <<locked>> | 92% | 41,568 psi | 65% | 2930 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,491 psi | 56% | 2710 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 47,834 psi | 75% | 2953 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,912 psi | 58% | 2753 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 43% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,730 psi | 72% | 2874 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,953 psi | 81% | 3071 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,163 psi | 66% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,215 psi | 55% | 2723 fps | 96.2% |
| ReloadSwiss RS 70 | 67.8 gr | 80% | 34,490 psi | 54% | 2726 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 48,834 psi | 77% | 2900 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,380 psi | 66% | 2822 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 50,270 psi | 79% | 2979 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 47,021 psi | 74% | 2969 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 42,380 psi | 66% | 2799 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,711 psi | 61% | 2720 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,779 psi | 83% | 2982 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,992 psi | 74% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,334 psi | 62% | 2749 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,642 psi | 68% | 2877 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,635 psi | 84% | 3009 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,111 psi | 80% | 2976 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,257 psi | 82% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,048 psi | 69% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,524 psi | 64% | 2720 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,586 psi | 73% | 2966 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,996 psi | 81% | 2884 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,461 psi | 84% | 2999 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,859 psi | 67% | 2825 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 31,821 psi | 50% | 2654 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 41,698 psi | 65% | 2828 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 52,852 psi | 83% | 2874 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,008 psi | 77% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,429 psi | 77% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,944 psi | 64% | 2753 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,941 psi | 58% | 2713 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 44,005 psi | 69% | 2864 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 47,601 psi | 75% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,260 psi | 57% | 2710 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 31,647 psi | 50% | 2644 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 98% | 52,025 psi | 82% | 3123 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,201 psi | 57% | 2684 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 40,393 psi | 63% | 2828 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,166 psi | 43% | 2589 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,155 psi | 80% | 2986 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,558 psi | 75% | 2940 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 110 powders for .300 Weath. Mag. loaded with the .308 | 155.8gr | Peregrine Glider GRM. Alliant Reloder-26 delivers the highest muzzle velocity at 3,251 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,251 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-16, Hodgdon Superformance rank at the top here: for .300 Weath. Mag. with the .308 | 155.8gr | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Bofors RP30, Hodgdon H1000 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.