Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:168 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
Recommended Twist Rate:1:10.5
Load data in caliber .300 Win. Mag. with .308 | 168gr | Barnes TAC-TX BT bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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.
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% | 53,055 psi | 85% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,259 psi | 89% | 2861 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,935 psi | 77% | 2825 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 53,461 psi | 86% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,128 psi | 87% | 2946 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,359 psi | 86% | 2881 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,578 psi | 88% | 2884 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2989 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,637 psi | 89% | 2881 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,505 psi | 86% | 3005 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,940 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,303 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,172 psi | 88% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,591 psi | 84% | 2979 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,694 psi | 88% | 2976 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2907 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,368 psi | 73% | 2854 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,566 psi | 63% | 2753 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 3041 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,229 psi | 85% | 2894 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,622 psi | 89% | 2920 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2907 fps | 96.2% |
| Bofors RP7 | <<locked>> | 92% | 55,216 psi | 89% | 2900 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,448 psi | 89% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,391 psi | 90% | 2940 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 52,968 psi | 85% | 2943 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 53,287 psi | 85% | 2907 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 53,983 psi | 87% | 2890 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,245 psi | 89% | 2930 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,824 psi | 86% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,214 psi | 85% | 2979 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,868 psi | 58% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,114 psi | 88% | 2890 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,302 psi | 87% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,969 psi | 87% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,548 psi | 86% | 2848 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 56,159 psi | 90% | 2933 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,882 psi | 86% | 2881 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 54,549 psi | 87% | 2940 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,243 psi | 85% | 2904 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,637 psi | 89% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,185 psi | 85% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,941 psi | 90% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,809 psi | 86% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,374 psi | 86% | 2871 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 54,447 psi | 87% | 2907 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,697 psi | 64% | 2671 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 55,361 psi | 89% | 2874 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,115 psi | 90% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,534 psi | 87% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,214 psi | 85% | 2923 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,082 psi | 82% | 2995 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 52,997 psi | 85% | 2933 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,448 psi | 89% | 2943 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,564 psi | 89% | 2989 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 55,738 psi | 89% | 2900 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,637 psi | 89% | 2917 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 59% | 1844 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,405 psi | 90% | 2923 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,173 psi | 90% | 2999 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,043 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,882 psi | 86% | 2969 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,939 psi | 85% | 2999 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 56,072 psi | 90% | 2848 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,912 psi | 90% | 2871 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,477 psi | 89% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,867 psi | 86% | 2904 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,809 psi | 86% | 2959 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 55,216 psi | 89% | 2900 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,374 psi | 86% | 2871 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,185 psi | 85% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,809 psi | 86% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,447 psi | 87% | 2907 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,751 psi | 86% | 2923 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,375 psi | 87% | 2881 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,259 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,113 psi | 85% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,824 psi | 86% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,301 psi | 85% | 2825 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,316 psi | 85% | 2953 fps | 97.3% |
| Somchem S335 | <<locked>> | 84% | 56,072 psi | 90% | 2805 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,186 psi | 87% | 2871 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,579 psi | 89% | 2910 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,448 psi | 89% | 2989 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,404 psi | 87% | 2936 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 53,621 psi | 86% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,202 psi | 90% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,185 psi | 85% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,548 psi | 86% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,506 psi | 89% | 2933 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2792 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 56,043 psi | 90% | 2877 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,853 psi | 88% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,404 psi | 87% | 2933 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,502 psi | 81% | 2930 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,288 psi | 89% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,229 psi | 85% | 2946 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,625 psi | 65% | 2887 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,332 psi | 89% | 2910 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2867 fps | 96.6% |
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% | 46,354 psi | 74% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,295 psi | 73% | 2690 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,071 psi | 58% | 2589 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,918 psi | 70% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,953 psi | 53% | 2533 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 50,067 psi | 80% | 2825 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,453 psi | 68% | 2671 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 45,658 psi | 73% | 2808 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,243 psi | 84% | 2828 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,195 psi | 74% | 2874 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,409 psi | 68% | 2694 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,614 psi | 73% | 2762 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,924 psi | 53% | 2549 fps | 96.2% |
| Alliant Reloder-17 | 59.3 gr | 80% | 36,956 psi | 59% | 2677 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,049 psi | 72% | 2802 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,889 psi | 72% | 2841 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,732 psi | 46% | 2454 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,795 psi | 56% | 2631 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,243 psi | 53% | 2638 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,777 psi | 80% | 2838 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,409 psi | 68% | 2700 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,889 psi | 72% | 2841 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 42,931 psi | 69% | 2677 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,576 psi | 83% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,047 psi | 69% | 2710 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 40,393 psi | 65% | 2703 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 43,787 psi | 70% | 2730 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,633 psi | 81% | 2835 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,255 psi | 49% | 2444 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,021 psi | 75% | 2812 fps | 100% |
| Hodgdon Superformance | 67.4 gr | 86% | 42,714 psi | 68% | 2782 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 43% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,501 psi | 78% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,981 psi | 82% | 2818 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,614 psi | 72% | 2707 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,992 psi | 75% | 2733 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 40,901 psi | 66% | 2657 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,320 psi | 63% | 2602 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 31,937 psi | 51% | 2490 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 46,804 psi | 75% | 2795 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,243 psi | 84% | 2828 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,777 psi | 80% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,342 psi | 79% | 2753 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,570 psi | 71% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,550 psi | 59% | 2546 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,566 psi | 63% | 2631 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 36,985 psi | 59% | 2612 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,689 psi | 78% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,298 psi | 79% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,947 psi | 72% | 2749 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,369 psi | 74% | 2805 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 41,220 psi | 66% | 2799 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,112 psi | 53% | 2533 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 44,875 psi | 72% | 2769 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,927 psi | 59% | 2635 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,185 psi | 84% | 2844 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,025 psi | 83% | 2861 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 43% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,221 psi | 69% | 2690 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,892 psi | 78% | 2881 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,363 psi | 63% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,764 psi | 53% | 2549 fps | 95.5% |
| ReloadSwiss RS 70 | 61.8 gr | 82% | 34,809 psi | 56% | 2618 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 52,605 psi | 84% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,311 psi | 74% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,755 psi | 64% | 2644 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 50,459 psi | 81% | 2844 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 43,888 psi | 70% | 2779 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 42,931 psi | 69% | 2677 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,550 psi | 59% | 2546 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,777 psi | 80% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,570 psi | 71% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,566 psi | 63% | 2631 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,089 psi | 66% | 2700 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,763 psi | 81% | 2822 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,501 psi | 78% | 2795 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,937 psi | 80% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,930 psi | 67% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,901 psi | 66% | 2602 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,557 psi | 75% | 2835 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,487 psi | 79% | 2710 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,604 psi | 81% | 2815 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,379 psi | 65% | 2648 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,762 psi | 48% | 2487 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 41,640 psi | 67% | 2707 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,502 psi | 81% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,441 psi | 74% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,746 psi | 75% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,493 psi | 62% | 2579 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,664 psi | 56% | 2539 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 43,772 psi | 70% | 2733 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 52,504 psi | 84% | 2825 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,165 psi | 72% | 2694 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,098 psi | 55% | 2536 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 29,240 psi | 47% | 2474 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,156 psi | 55% | 2516 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 40,596 psi | 65% | 2710 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,977 psi | 43% | 2474 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,254 psi | 77% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,587 psi | 76% | 2808 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 Win. Mag. loaded with the .308 | 168gr | Barnes TAC-TX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,041 fps. Accurate 3100 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 (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Barnes TAC-TX BT 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.