Load Specifications
Bullet:.308 | 180gr | Speer TBBC
Bullet Manufacturer:Speer
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.308 Norma Mag. load data
Case Length (l3):2.559"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber .308 Norma Mag. with .308 | 180gr | Speer TBBC bullet and 103 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-26 and Alliant Reloder-16.
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% | 57,464 psi | 90% | 2749 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,969 psi | 86% | 2762 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2805 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 54,273 psi | 85% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,665 psi | 86% | 2858 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3002 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 82% | 56,768 psi | 89% | 2831 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,389 psi | 85% | 2785 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,767 psi | 87% | 2897 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 2884 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,130 psi | 90% | 2959 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,551 psi | 90% | 2841 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,114 psi | 86% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,390 psi | 87% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,405 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,753 psi | 89% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,810 psi | 86% | 2884 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2881 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 2743 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3015 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,695 psi | 89% | 2851 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,732 psi | 75% | 2805 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 55,796 psi | 87% | 2822 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2881 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 55,230 psi | 87% | 2805 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 56,333 psi | 88% | 2841 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 56,956 psi | 89% | 2910 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 56,797 psi | 89% | 2867 fps | 98.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2894 fps | 96.6% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,941 psi | 88% | 2874 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 57,392 psi | 90% | 2841 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,622 psi | 87% | 2835 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,609 psi | 90% | 2874 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,392 psi | 90% | 2949 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1745 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,839 psi | 86% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,290 psi | 90% | 2815 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,376 psi | 88% | 2802 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 56,246 psi | 88% | 2841 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,869 psi | 89% | 2835 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 55,114 psi | 86% | 2848 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,855 psi | 89% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,288 psi | 87% | 2825 fps | 96.4% |
| Lovex D073.6 | <<locked>> | 82% | 57,087 psi | 89% | 2802 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,506 psi | 87% | 2756 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,363 psi | 90% | 2808 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,956 psi | 89% | 2831 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 54,781 psi | 86% | 2822 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,468 psi | 68% | 2654 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 55,376 psi | 87% | 2772 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,999 psi | 88% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,679 psi | 86% | 2815 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,043 psi | 89% | 2894 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 55,230 psi | 87% | 2969 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 57,000 psi | 89% | 2894 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,201 psi | 87% | 2838 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,908 psi | 80% | 2871 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 94% | 55,796 psi | 87% | 2894 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,440 psi | 71% | 2746 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,217 psi | 88% | 2825 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,202 psi | 88% | 2894 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,188 psi | 88% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,447 psi | 85% | 2877 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,724 psi | 89% | 2963 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,698 psi | 65% | 2753 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 84% | 55,956 psi | 88% | 2772 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,898 psi | 88% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,508 psi | 90% | 2867 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,070 psi | 85% | 2871 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 55,230 psi | 87% | 2805 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,956 psi | 89% | 2831 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,087 psi | 89% | 2802 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,363 psi | 90% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,781 psi | 86% | 2822 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,493 psi | 90% | 2877 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,940 psi | 86% | 2799 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,144 psi | 88% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,000 psi | 89% | 2703 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,695 psi | 89% | 2782 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 2923 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 55,869 psi | 88% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,740 psi | 90% | 2822 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,811 psi | 87% | 2815 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,506 psi | 87% | 2805 fps | 96.1% |
| Somchem S365 | <<locked>> | 96% | 56,275 psi | 88% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,824 psi | 86% | 2848 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 82% | 56,681 psi | 89% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,202 psi | 88% | 2730 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,579 psi | 89% | 2746 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,232 psi | 90% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,593 psi | 87% | 2835 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,647 psi | 79% | 2769 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 54,853 psi | 86% | 2746 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,636 psi | 86% | 2841 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2900 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2956 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,085 psi | 86% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,217 psi | 90% | 2913 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,425 psi | 70% | 2877 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,187 psi | 86% | 2808 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2844 fps | 97.9% |
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% | 50,401 psi | 79% | 2654 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,327 psi | 76% | 2654 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 34,867 psi | 55% | 2477 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,761 psi | 75% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,172 psi | 57% | 2520 fps | 97.7% |
| Accurate High Country | <<locked>> | 94% | 46,383 psi | 73% | 2815 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 53,055 psi | 83% | 2776 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,208 psi | 71% | 2635 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,033 psi | 67% | 2671 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 49,908 psi | 78% | 2825 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,617 psi | 78% | 2841 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,838 psi | 84% | 2789 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,585 psi | 71% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,617 psi | 76% | 2723 fps | 99.9% |
| Alliant Reloder-16 | 55 gr | 80% | 35,520 psi | 56% | 2533 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,074 psi | 63% | 2654 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,511 psi | 67% | 2661 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,554 psi | 67% | 2707 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,976 psi | 41% | 2287 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,388 psi | 52% | 2513 fps | 95.4% |
| Alliant Reloder-26 | 63.7 gr | 84% | 31,647 psi | 50% | 2513 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,881 psi | 83% | 2792 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,773 psi | 70% | 2749 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,963 psi | 72% | 2671 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,554 psi | 67% | 2707 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,480 psi | 63% | 2539 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,325 psi | 73% | 2680 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,174 psi | 60% | 2566 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 41,292 psi | 65% | 2592 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 53,359 psi | 84% | 2831 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,359 psi | 82% | 2815 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,693 psi | 84% | 2785 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,982 psi | 52% | 2428 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,502 psi | 79% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,827 psi | 62% | 2635 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,503 psi | 81% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,558 psi | 75% | 2667 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,821 psi | 78% | 2694 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 38,493 psi | 60% | 2520 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,930 psi | 66% | 2572 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 34,954 psi | 55% | 2477 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 49,879 psi | 78% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,967 psi | 81% | 2772 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 80% | 53,548 psi | 84% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,170 psi | 82% | 2703 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,761 psi | 75% | 2664 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,407 psi | 62% | 2523 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 37,594 psi | 59% | 2500 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 33,707 psi | 53% | 2448 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 52,025 psi | 82% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,591 psi | 82% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,993 psi | 75% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,555 psi | 68% | 2661 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 39,218 psi | 61% | 2667 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 36,085 psi | 57% | 2516 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 48,240 psi | 76% | 2730 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,326 psi | 74% | 2802 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,056 psi | 55% | 2503 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,250 psi | 66% | 2684 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,267 psi | 73% | 2661 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,620 psi | 82% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,569 psi | 67% | 2710 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,868 psi | 56% | 2536 fps | 97.3% |
| ReloadSwiss RS 70 | 60.1 gr | 80% | 35,027 psi | 55% | 2539 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,957 psi | 61% | 2687 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 49,545 psi | 78% | 2677 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,134 psi | 68% | 2615 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,500 psi | 74% | 2703 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 41,481 psi | 65% | 2641 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 40,480 psi | 63% | 2539 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,407 psi | 62% | 2523 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,548 psi | 84% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,761 psi | 75% | 2664 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,594 psi | 59% | 2500 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,266 psi | 69% | 2667 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,663 psi | 81% | 2749 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,881 psi | 83% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,686 psi | 70% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,609 psi | 61% | 2467 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,932 psi | 69% | 2697 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 52,562 psi | 82% | 2657 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,751 psi | 84% | 2766 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,526 psi | 68% | 2615 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 51,996 psi | 81% | 2749 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 32,518 psi | 51% | 2474 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 39,610 psi | 62% | 2575 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 53,461 psi | 84% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,821 psi | 78% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,908 psi | 78% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,510 psi | 65% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,449 psi | 59% | 2516 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 41,452 psi | 65% | 2605 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,298 psi | 76% | 2651 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,043 psi | 58% | 2520 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 28,369 psi | 44% | 2362 fps | 95.4% |
| Vihtavuori N560 | <<locked>> | 98% | 51,909 psi | 81% | 2894 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,666 psi | 57% | 2490 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 38,377 psi | 60% | 2569 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,092 psi | 41% | 2372 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,590 psi | 81% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,512 psi | 70% | 2667 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 111 powders for .308 Norma Mag. loaded with the .308 | 180gr | Speer TBBC. Alliant Reloder-26 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,745 fps to 3,015 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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-26, Alliant Reloder-16 rank at the top here: for .308 Norma Mag. with the .308 | 180gr | Speer TBBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.