Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:168 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:11.0
Load data in caliber .300 H&H Mag. with .308 | 168gr | Barnes TTSX BT bullet and 99 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 2015 | <<locked>> | 82% | 54,737 psi | 88% | 2753 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,505 psi | 86% | 2776 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,245 psi | 89% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,202 psi | 90% | 2838 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,512 psi | 71% | 2736 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 53,780 psi | 86% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,041 psi | 87% | 2917 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,027 psi | 87% | 2858 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,143 psi | 88% | 2861 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2894 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,434 psi | 90% | 2858 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,157 psi | 87% | 2782 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,056 psi | 87% | 2982 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,214 psi | 84% | 2894 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,332 psi | 89% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,970 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,230 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,823 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,387 psi | 82% | 2884 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,148 psi | 68% | 2762 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,848 psi | 77% | 2940 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,041 psi | 87% | 2874 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 55,869 psi | 90% | 2894 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,883 psi | 90% | 2874 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,462 psi | 87% | 2789 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,912 psi | 90% | 2887 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,142 psi | 85% | 2858 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 53,287 psi | 85% | 2913 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 53,795 psi | 86% | 2877 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 54,607 psi | 88% | 2867 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2900 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,418 psi | 87% | 2904 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,693 psi | 86% | 2953 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 57% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,738 psi | 89% | 2871 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,868 psi | 88% | 2848 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,563 psi | 87% | 2844 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,389 psi | 87% | 2825 fps | 98.2% |
| IMR 4350 | <<locked>> | 96% | 53,171 psi | 85% | 2851 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,433 psi | 87% | 2851 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 54,636 psi | 88% | 2910 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 53,679 psi | 86% | 2881 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,434 psi | 90% | 2858 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,838 psi | 86% | 2831 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,505 psi | 86% | 2785 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,563 psi | 87% | 2838 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,853 psi | 86% | 2844 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 54,868 psi | 88% | 2881 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 56,101 psi | 90% | 2851 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,403 psi | 86% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,158 psi | 88% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,621 psi | 86% | 2894 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 47,514 psi | 76% | 2894 fps | 96.9% |
| Norma URP | <<locked>> | 96% | 53,171 psi | 85% | 2907 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,927 psi | 90% | 2920 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,738 psi | 89% | 2959 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 52,953 psi | 85% | 2825 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,852 psi | 85% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,432 psi | 86% | 2841 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,852 psi | 85% | 2917 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,289 psi | 90% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,012 psi | 87% | 2940 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,243 psi | 85% | 2969 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 53,345 psi | 86% | 2779 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,301 psi | 85% | 2802 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,999 psi | 90% | 2890 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,241 psi | 81% | 2867 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 55,883 psi | 90% | 2874 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,853 psi | 86% | 2844 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,838 psi | 86% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,563 psi | 87% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,868 psi | 88% | 2881 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,331 psi | 87% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,230 psi | 89% | 2861 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,028 psi | 90% | 2881 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,954 psi | 87% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,520 psi | 87% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,925 psi | 86% | 2799 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,763 psi | 80% | 2861 fps | 96% |
| Somchem S335 | <<locked>> | 84% | 53,548 psi | 86% | 2740 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,027 psi | 88% | 2851 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,130 psi | 90% | 2887 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,143 psi | 88% | 2959 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,836 psi | 82% | 2844 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 84% | 54,360 psi | 87% | 2726 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,229 psi | 85% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,911 psi | 86% | 2782 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,201 psi | 87% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,637 psi | 89% | 2900 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 53,156 psi | 85% | 2805 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,477 psi | 89% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,621 psi | 88% | 2907 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,905 psi | 75% | 2841 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,854 psi | 90% | 2877 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,505 psi | 86% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,563 psi | 86% | 2920 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,855 psi | 61% | 2782 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,941 psi | 90% | 2887 fps | 100% |
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 2015 | <<locked>> | 80% | 51,329 psi | 82% | 2703 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,830 psi | 70% | 2631 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,547 psi | 83% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,977 psi | 74% | 2667 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 38,566 psi | 62% | 2618 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 41,481 psi | 67% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,996 psi | 53% | 2507 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 47,471 psi | 76% | 2749 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,466 psi | 65% | 2602 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 49,081 psi | 79% | 2838 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,632 psi | 80% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,647 psi | 81% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,627 psi | 70% | 2792 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,718 psi | 78% | 2835 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,074 psi | 64% | 2618 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,062 psi | 69% | 2684 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,127 psi | 53% | 2523 fps | 95.6% |
| Alliant Reloder-17 | 56 gr | 80% | 34,722 psi | 56% | 2592 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,037 psi | 77% | 2822 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,747 psi | 46% | 2428 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,549 psi | 57% | 2667 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,079 psi | 75% | 2759 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 39,885 psi | 64% | 2625 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 43,468 psi | 70% | 2654 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,227 psi | 82% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,849 psi | 78% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,698 psi | 65% | 2631 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 40,596 psi | 65% | 2677 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 47,239 psi | 76% | 2762 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,935 psi | 77% | 2759 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,485 psi | 46% | 2365 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,266 psi | 71% | 2736 fps | 99.8% |
| Hodgdon Superformance | 65.1 gr | 88% | 42,989 psi | 69% | 2753 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 43% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,948 psi | 74% | 2710 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 48,008 psi | 77% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,511 psi | 68% | 2635 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,759 psi | 72% | 2654 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 43,903 psi | 70% | 2687 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,366 psi | 68% | 2635 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 31,981 psi | 51% | 2467 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,135 psi | 71% | 2717 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 49,632 psi | 80% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,833 psi | 75% | 2723 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,311 psi | 76% | 2684 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,366 psi | 68% | 2635 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,999 psi | 59% | 2526 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 39,900 psi | 64% | 2608 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,456 psi | 74% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,818 psi | 75% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,424 psi | 68% | 2674 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 50,024 psi | 80% | 2835 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 41,292 psi | 66% | 2766 fps | 95% |
| Norma URP | <<locked>> | 82% | 33,388 psi | 54% | 2513 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 42,351 psi | 68% | 2690 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 39,784 psi | 64% | 2667 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,617 psi | 80% | 2769 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,443 psi | 79% | 2785 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 43% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,075 psi | 66% | 2615 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,064 psi | 74% | 2799 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,985 psi | 59% | 2661 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,808 psi | 53% | 2526 fps | 95% |
| ReloadSwiss RS 70 | 61.2 gr | 86% | 37,594 psi | 60% | 2654 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 50,125 psi | 80% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,063 psi | 71% | 2648 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,420 psi | 60% | 2566 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 98% | 46,760 psi | 75% | 2805 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 43,468 psi | 70% | 2654 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,999 psi | 59% | 2526 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,833 psi | 75% | 2723 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,366 psi | 68% | 2635 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,900 psi | 64% | 2608 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,740 psi | 62% | 2621 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,993 psi | 77% | 2743 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,108 psi | 74% | 2723 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,630 psi | 76% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,798 psi | 64% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,278 psi | 66% | 2575 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,296 psi | 74% | 2795 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,355 psi | 76% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,906 psi | 77% | 2740 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,290 psi | 61% | 2575 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 27,746 psi | 44% | 2402 fps | 96.7% |
| Somchem S385 | <<locked>> | 96% | 44,411 psi | 71% | 2730 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 48,095 psi | 77% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,874 psi | 70% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,367 psi | 71% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,347 psi | 58% | 2507 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 32,460 psi | 52% | 2461 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 49,893 psi | 80% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,844 psi | 69% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 34,171 psi | 55% | 2513 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 31,096 psi | 50% | 2503 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,213 psi | 52% | 2434 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 49,937 psi | 80% | 2799 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,814 psi | 65% | 2684 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,790 psi | 46% | 2507 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,658 psi | 73% | 2723 fps | 99.8% |
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 99 powders for .300 H&H Mag. loaded with the .308 | 168gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,765 fps to 3,009 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, 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 2209, Alliant Power Pro Varmint 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 H&H Mag. with the .308 | 168gr | Barnes TTSX 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.