Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Win. Mag. load data
Case Length (l3):2.62"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:90.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Load data in caliber .300 Win. Mag. with .308 | 150gr | Woodleigh FN SN bullet and 94 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.
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% | 55,811 psi | 89% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,592 psi | 86% | 3002 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,792 psi | 81% | 3031 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 56,028 psi | 90% | 3058 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,881 psi | 85% | 3094 fps | 99.6% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,608 psi | 89% | 3238 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 55,056 psi | 88% | 3084 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,333 psi | 90% | 3087 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,230 psi | 87% | 3133 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,593 psi | 89% | 3215 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,128 psi | 87% | 3127 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,621 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,795 psi | 86% | 3077 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,795 psi | 86% | 3159 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,013 psi | 88% | 3189 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,388 psi | 86% | 3117 fps | 96.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 3110 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,630 psi | 76% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,742 psi | 67% | 2953 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 3255 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,129 psi | 88% | 3097 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,302 psi | 87% | 3074 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 3110 fps | 96.1% |
| Bofors RP7 | <<locked>> | 90% | 53,925 psi | 86% | 3048 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 86% | 54,752 psi | 88% | 3087 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,317 psi | 89% | 3150 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 90% | 55,187 psi | 88% | 3107 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,695 psi | 89% | 3094 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,983 psi | 87% | 3081 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,941 psi | 90% | 3130 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,796 psi | 89% | 3189 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1946 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,287 psi | 85% | 3038 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,362 psi | 90% | 3074 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,840 psi | 90% | 3071 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,071 psi | 88% | 3045 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 54,694 psi | 88% | 3077 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,521 psi | 89% | 3077 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 53,461 psi | 86% | 3087 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 55,187 psi | 88% | 3110 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,521 psi | 89% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,128 psi | 87% | 3005 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,883 psi | 90% | 3064 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,593 psi | 89% | 3077 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 53,461 psi | 86% | 3058 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,003 psi | 67% | 2864 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 53,795 psi | 86% | 3025 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,578 psi | 88% | 3025 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,098 psi | 85% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,477 psi | 89% | 3130 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 53,708 psi | 86% | 3202 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 55,376 psi | 89% | 3140 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 53,809 psi | 86% | 3091 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,215 psi | 87% | 3133 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 59% | 1991 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,955 psi | 88% | 3071 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,462 psi | 87% | 3146 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,636 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,866 psi | 85% | 3117 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,317 psi | 89% | 3205 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 54,491 psi | 87% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,404 psi | 87% | 3071 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,883 psi | 90% | 3100 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,217 psi | 90% | 3163 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 53,925 psi | 86% | 3048 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,593 psi | 89% | 3077 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,521 psi | 89% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,883 psi | 90% | 3064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,461 psi | 86% | 3058 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,072 psi | 90% | 3130 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,592 psi | 86% | 3048 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,911 psi | 88% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,680 psi | 89% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,390 psi | 89% | 3022 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,709 psi | 89% | 3156 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 54,433 psi | 87% | 2953 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,101 psi | 90% | 3071 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,360 psi | 87% | 3064 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,476 psi | 87% | 3146 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,403 psi | 86% | 3081 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 55,405 psi | 89% | 2943 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,650 psi | 88% | 2986 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,172 psi | 88% | 3005 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,738 psi | 89% | 3041 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,925 psi | 86% | 3077 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,153 psi | 79% | 2989 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 84% | 53,345 psi | 86% | 2995 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,185 psi | 85% | 3081 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,403 psi | 86% | 3140 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,795 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,550 psi | 89% | 3153 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,946 psi | 69% | 3091 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,679 psi | 86% | 3058 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 3071 fps | 96.5% |
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% | 48,849 psi | 78% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,065 psi | 75% | 2881 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 38,450 psi | 62% | 2782 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,253 psi | 74% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,940 psi | 56% | 2723 fps | 95.9% |
| Accurate High Country | <<locked>> | 98% | 51,866 psi | 83% | 3169 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 51,837 psi | 83% | 3028 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,888 psi | 70% | 2861 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 50,865 psi | 82% | 3071 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,080 psi | 77% | 3077 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 47,558 psi | 76% | 3002 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,324 psi | 71% | 2890 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,355 psi | 76% | 2959 fps | 99.4% |
| Alliant Reloder-16 | 60.8 gr | 80% | 34,272 psi | 55% | 2730 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,725 psi | 62% | 2867 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,183 psi | 80% | 3058 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,369 psi | 76% | 3048 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,371 psi | 49% | 2638 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,738 psi | 59% | 2822 fps | 95.1% |
| Alliant Reloder-26 | 73.9 gr | 88% | 35,288 psi | 57% | 2831 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,488 psi | 83% | 3035 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,541 psi | 71% | 2900 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,369 psi | 76% | 3048 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,657 psi | 72% | 2867 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 44,846 psi | 72% | 2900 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 42,337 psi | 68% | 2897 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 48,617 psi | 78% | 2986 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 52,373 psi | 84% | 3038 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,792 psi | 51% | 2621 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,965 psi | 79% | 3012 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,831 psi | 72% | 2979 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,035 psi | 43% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,111 psi | 80% | 2986 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,837 psi | 85% | 3025 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,122 psi | 74% | 2900 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,602 psi | 78% | 2927 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 45,194 psi | 72% | 2900 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,424 psi | 70% | 2844 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,736 psi | 54% | 2674 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,573 psi | 78% | 2995 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 51,938 psi | 83% | 3002 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,966 psi | 82% | 2949 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,441 psi | 74% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,247 psi | 61% | 2730 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,510 psi | 67% | 2822 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,494 psi | 63% | 2808 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,633 psi | 81% | 2969 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,300 psi | 82% | 2976 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,731 psi | 75% | 2949 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,457 psi | 78% | 3002 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 43,497 psi | 70% | 2999 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,911 psi | 56% | 2720 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 46,760 psi | 75% | 2966 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,696 psi | 62% | 2822 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 44% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,078 psi | 72% | 2887 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,865 psi | 82% | 3084 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,176 psi | 66% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,693 psi | 56% | 2736 fps | 95.4% |
| ReloadSwiss RS 70 | 68.2 gr | 82% | 36,376 psi | 58% | 2799 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,138 psi | 77% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,814 psi | 67% | 2838 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 52,518 psi | 84% | 3045 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 49,124 psi | 79% | 3038 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,657 psi | 72% | 2867 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,247 psi | 61% | 2730 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,938 psi | 83% | 3002 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,441 psi | 74% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,510 psi | 67% | 2822 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,844 psi | 69% | 2890 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,256 psi | 81% | 2992 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,576 psi | 83% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,439 psi | 70% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,627 psi | 68% | 2785 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,660 psi | 78% | 3031 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 51,242 psi | 82% | 2904 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,359 psi | 84% | 3012 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,192 psi | 68% | 2838 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,328 psi | 50% | 2667 fps | 97.9% |
| Somchem S385 | <<locked>> | 92% | 43,671 psi | 70% | 2897 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 52,054 psi | 83% | 2894 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,298 psi | 77% | 2890 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,573 psi | 78% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,306 psi | 65% | 2766 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,318 psi | 58% | 2723 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 45,876 psi | 74% | 2927 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 46,891 psi | 75% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,752 psi | 57% | 2720 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 31,212 psi | 50% | 2661 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,607 psi | 57% | 2690 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 42,525 psi | 68% | 2900 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,776 psi | 46% | 2664 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,256 psi | 81% | 2999 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,893 psi | 80% | 3005 fps | 95.6% |
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 94 powders for .300 Win. Mag. loaded with the .308 | 150gr | Woodleigh FN SN. Alliant Reloder-26 delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 1,946 fps to 3,255 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 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. Accurate 3100, Accurate High Country, 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. Alliant Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Woodleigh FN SN 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.