Load Specifications
Bullet:.308 | 146.6gr | Sax KDG-S
Bullet Manufacturer:Sax
Bullet Weight:146.6 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 Weath. Mag. load data
Case Length (l3):2.824"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:98.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.5
Load data in caliber .300 Weath. Mag. with .308 | 146.6gr | Sax KDG-S bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Winchester 760 and Hodgdon H414.
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% | 55,172 psi | 86% | 3051 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,464 psi | 90% | 3123 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,879 psi | 80% | 3087 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 55,622 psi | 87% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,942 psi | 89% | 3219 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 55,259 psi | 87% | 3146 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,579 psi | 89% | 3150 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,781 psi | 86% | 3199 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,522 psi | 90% | 3143 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,912 psi | 88% | 3278 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,145 psi | 90% | 3173 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,551 psi | 90% | 3199 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,172 psi | 85% | 3222 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,695 psi | 87% | 3255 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3245 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 3173 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,066 psi | 75% | 3114 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,800 psi | 66% | 3005 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3323 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,405 psi | 87% | 3159 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 54,215 psi | 85% | 3130 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 3173 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 57,595 psi | 90% | 3169 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,725 psi | 90% | 3176 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,897 psi | 86% | 3146 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,622 psi | 87% | 3212 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 55,492 psi | 87% | 3169 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 55,854 psi | 88% | 3153 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,418 psi | 85% | 3143 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,289 psi | 88% | 3192 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,391 psi | 88% | 3255 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 56% | 1991 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,058 psi | 89% | 3156 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,347 psi | 88% | 3133 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,985 psi | 88% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,274 psi | 87% | 3107 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 55,027 psi | 86% | 3140 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,941 psi | 88% | 3143 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 57,348 psi | 90% | 3205 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,245 psi | 87% | 3166 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,522 psi | 90% | 3143 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,419 psi | 87% | 3114 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,725 psi | 90% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,057 psi | 88% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,550 psi | 87% | 3133 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 57,029 psi | 89% | 3176 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,003 psi | 66% | 2913 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 57,232 psi | 90% | 3136 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,563 psi | 86% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,797 psi | 89% | 3182 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,898 psi | 88% | 3192 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3268 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 55,782 psi | 87% | 3202 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 53,969 psi | 85% | 3146 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,592 psi | 86% | 3196 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 57% | 2037 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,013 psi | 86% | 3127 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,824 psi | 86% | 3209 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,955 psi | 86% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,072 psi | 89% | 3241 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,738 psi | 87% | 3271 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 57,725 psi | 90% | 3114 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 54,534 psi | 85% | 3084 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,273 psi | 85% | 3123 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,507 psi | 89% | 3169 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3228 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 57,595 psi | 90% | 3169 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,550 psi | 87% | 3133 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,419 psi | 87% | 3114 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,057 psi | 88% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,029 psi | 89% | 3176 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,405 psi | 88% | 3192 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,608 psi | 89% | 3146 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,508 psi | 90% | 3169 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,926 psi | 86% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,825 psi | 87% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,448 psi | 87% | 3081 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3222 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 54,375 psi | 85% | 3009 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,347 psi | 88% | 3133 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,331 psi | 85% | 3120 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,781 psi | 86% | 3205 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3202 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 55,477 psi | 87% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,723 psi | 86% | 3048 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,288 psi | 87% | 3061 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,840 psi | 88% | 3097 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,389 psi | 85% | 3143 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 3048 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 86% | 57,116 psi | 90% | 3107 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,116 psi | 90% | 3202 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,548 psi | 84% | 3196 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,244 psi | 85% | 3107 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,869 psi | 88% | 3215 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,236 psi | 68% | 3153 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,780 psi | 84% | 3114 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3133 fps | 96.7% |
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% | 48,240 psi | 76% | 2946 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,992 psi | 74% | 2936 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 38,377 psi | 60% | 2831 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,716 psi | 72% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,577 psi | 54% | 2762 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 51,837 psi | 81% | 3087 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,859 psi | 69% | 2917 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 47,805 psi | 75% | 3068 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,998 psi | 85% | 3087 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,312 psi | 76% | 3140 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,135 psi | 69% | 2940 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,340 psi | 74% | 3018 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,243 psi | 54% | 2782 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,783 psi | 61% | 2923 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,166 psi | 74% | 3054 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,645 psi | 75% | 3107 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,037 psi | 47% | 2674 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,593 psi | 57% | 2871 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,143 psi | 55% | 2874 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,634 psi | 81% | 3094 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,237 psi | 69% | 2949 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,645 psi | 75% | 3107 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 44,599 psi | 70% | 2923 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,708 psi | 84% | 3110 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,802 psi | 70% | 2956 fps | 98.2% |
| Hodgdon H414 | 70.5 gr | 84% | 42,322 psi | 66% | 2949 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 45,687 psi | 72% | 2982 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 52,431 psi | 82% | 3097 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,546 psi | 49% | 2664 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,037 psi | 77% | 3068 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,904 psi | 70% | 3035 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,241 psi | 79% | 3045 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,895 psi | 83% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,122 psi | 72% | 2953 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,588 psi | 76% | 2986 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 45,353 psi | 71% | 2956 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,366 psi | 68% | 2900 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,373 psi | 52% | 2713 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 48,573 psi | 76% | 3048 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,998 psi | 85% | 3087 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,895 psi | 81% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,966 psi | 80% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,253 psi | 72% | 2956 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,927 psi | 59% | 2776 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 41,292 psi | 65% | 2874 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,218 psi | 61% | 2851 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,372 psi | 79% | 3025 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,169 psi | 80% | 3028 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,673 psi | 73% | 3002 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,573 psi | 76% | 3061 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 43,801 psi | 69% | 3058 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,780 psi | 55% | 2766 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 46,891 psi | 73% | 3022 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 38,783 psi | 61% | 2874 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 43% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,991 psi | 71% | 2940 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,068 psi | 80% | 3143 fps | 99.7% |
| ReloadSwiss RS 60 | 68.7 gr | 80% | 41,321 psi | 65% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,432 psi | 54% | 2779 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 36,361 psi | 57% | 2851 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 54,389 psi | 85% | 3061 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,950 psi | 75% | 2972 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,597 psi | 65% | 2887 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 52,721 psi | 83% | 3104 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 46,079 psi | 72% | 3031 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 44,599 psi | 70% | 2923 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,927 psi | 59% | 2776 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,895 psi | 81% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,253 psi | 72% | 2956 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,292 psi | 65% | 2874 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,888 psi | 67% | 2946 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,663 psi | 83% | 3081 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,343 psi | 79% | 3051 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,445 psi | 81% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,308 psi | 68% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,612 psi | 67% | 2841 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,066 psi | 77% | 3094 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,082 psi | 80% | 2959 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,475 psi | 82% | 3068 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,974 psi | 66% | 2887 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,096 psi | 49% | 2710 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 43,729 psi | 69% | 2949 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 52,011 psi | 82% | 2953 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,109 psi | 75% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,646 psi | 76% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,219 psi | 63% | 2818 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,172 psi | 57% | 2772 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 46,180 psi | 72% | 2986 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,905 psi | 74% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,636 psi | 56% | 2766 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 33,170 psi | 52% | 2759 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,520 psi | 56% | 2740 fps | 98.3% |
| Winchester 760 | 70.6 gr | 84% | 42,511 psi | 67% | 2953 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,485 psi | 45% | 2703 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,270 psi | 79% | 3058 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,154 psi | 79% | 3068 fps | 95.8% |
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 97 powders for .300 Weath. Mag. loaded with the .308 | 146.6gr | Sax KDG-S. Alliant Reloder-26 delivers the highest muzzle velocity at 3,323 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,323 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 146.6 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, 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 60, Winchester 760, Hodgdon H414 rank at the top here: for .300 Weath. Mag. with the .308 | 146.6gr | Sax KDG-S 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.