Load Specifications
Bullet Manufacturer:Norma
Bullet Weight:155 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:12.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 155gr | Norma Kalahari bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 58,204 psi | 90% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,652 psi | 87% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 56,289 psi | 87% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 58,813 psi | 90% | 2972 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,144 psi | 86% | 2887 fps | 96.1% |
| Accurate 4064 | <<locked>> | 94% | 56,115 psi | 86% | 2943 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,793 psi | 80% | 2956 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 82% | 56,840 psi | 87% | 2818 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,261 psi | 88% | 2844 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 57,159 psi | 88% | 2976 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 58,059 psi | 89% | 2972 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 58,479 psi | 90% | 2946 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,333 psi | 87% | 2930 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,898 psi | 88% | 2907 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 58,247 psi | 90% | 3041 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,710 psi | 87% | 3094 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 57,870 psi | 89% | 2995 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,696 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 58,581 psi | 90% | 3018 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,546 psi | 78% | 2963 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,882 psi | 84% | 3061 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,824 psi | 55% | 2674 fps | 96.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,202 psi | 86% | 2812 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,985 psi | 88% | 2992 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 58,769 psi | 90% | 3015 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 2972 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 58,276 psi | 90% | 2913 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,622 psi | 86% | 2963 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 57,624 psi | 89% | 3061 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,942 psi | 88% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 58,392 psi | 90% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,318 psi | 87% | 2972 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,114 psi | 85% | 3009 fps | 97% |
| Hodgdon H4895 | <<locked>> | 90% | 57,725 psi | 89% | 2989 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,659 psi | 72% | 2841 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,985 psi | 88% | 3022 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 56,565 psi | 87% | 3048 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 54% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,477 psi | 85% | 2936 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 57,493 psi | 88% | 2972 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,783 psi | 89% | 2959 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 58,204 psi | 90% | 2936 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 57,624 psi | 89% | 2838 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 57,232 psi | 88% | 2953 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,385 psi | 76% | 2897 fps | 98.4% |
| IMR 4895 | <<locked>> | 92% | 56,405 psi | 87% | 2999 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 56,333 psi | 87% | 2930 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,724 psi | 87% | 2917 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,913 psi | 88% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,869 psi | 87% | 2900 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 57,305 psi | 88% | 2953 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,260 psi | 87% | 2943 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,722 psi | 83% | 2923 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 55,825 psi | 86% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,275 psi | 87% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,682 psi | 89% | 3005 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,300 psi | 79% | 2946 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 94% | 58,479 psi | 90% | 3031 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,270 psi | 77% | 2936 fps | 96.9% |
| Ramshot TAC | <<locked>> | 88% | 56,942 psi | 88% | 2946 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,101 psi | 86% | 2966 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 57,537 psi | 89% | 2933 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,578 psi | 55% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,970 psi | 86% | 2913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,623 psi | 87% | 2949 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,390 psi | 85% | 3035 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 58,566 psi | 90% | 3120 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,401 psi | 79% | 2976 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,996 psi | 80% | 3002 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 88% | 56,768 psi | 87% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,275 psi | 87% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 58,291 psi | 90% | 2999 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 2972 fps | 96.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,260 psi | 87% | 2943 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,913 psi | 88% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 57,305 psi | 88% | 2953 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,722 psi | 83% | 2923 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,593 psi | 86% | 2881 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,434 psi | 87% | 3009 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 58,653 psi | 90% | 2904 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,158 psi | 85% | 2920 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,666 psi | 86% | 2949 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,595 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 57,740 psi | 89% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,203 psi | 88% | 2897 fps | 97.1% |
| Somchem S321 | <<locked>> | 86% | 57,667 psi | 89% | 2966 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,826 psi | 87% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 58,262 psi | 90% | 2969 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 58,436 psi | 90% | 2995 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,774 psi | 70% | 2894 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 57,551 psi | 89% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,624 psi | 89% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,782 psi | 86% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,855 psi | 87% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,710 psi | 87% | 2927 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2943 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 88% | 57,000 psi | 88% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 54,998 psi | 85% | 2897 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,040 psi | 82% | 2953 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,609 psi | 59% | 2759 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,679 psi | 84% | 2927 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 56,608 psi | 87% | 2979 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,419 psi | 85% | 3012 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,564 psi | 85% | 2956 fps | 99.9% |
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 2015 | <<locked>> | 80% | 45,513 psi | 70% | 2694 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,647 psi | 76% | 2802 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,971 psi | 58% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,715 psi | 69% | 2756 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 52,750 psi | 81% | 2835 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 35,911 psi | 55% | 2592 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 36,608 psi | 56% | 2664 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 53,679 psi | 83% | 2772 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,099 psi | 83% | 2799 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,829 psi | 64% | 2707 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,462 psi | 55% | 2546 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 54,563 psi | 84% | 2894 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,888 psi | 68% | 2720 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 43,569 psi | 67% | 2717 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,140 psi | 79% | 2930 fps | 99.7% |
| Alliant Power Pro 2000-MR | 51.5 gr | 80% | 37,710 psi | 58% | 2713 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,954 psi | 54% | 2572 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,039 psi | 79% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,652 psi | 58% | 2638 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,159 psi | 57% | 2680 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 82% | 32,213 psi | 50% | 2579 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,649 psi | 52% | 2618 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,750 psi | 81% | 2766 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,712 psi | 63% | 2700 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 34,374 psi | 53% | 2572 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 52,098 psi | 80% | 2867 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,614 psi | 70% | 2713 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,264 psi | 65% | 2736 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,470 psi | 71% | 2877 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 50,024 psi | 77% | 2825 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,039 psi | 79% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,422 psi | 62% | 2687 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 96% | 48,196 psi | 74% | 2890 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,206 psi | 65% | 2720 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,952 psi | 49% | 2520 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,913 psi | 58% | 2680 fps | 98% |
| Hodgdon Superformance | <<locked>> | 98% | 52,736 psi | 81% | 2986 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 40% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,437 psi | 62% | 2667 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 41,321 psi | 64% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,188 psi | 57% | 2585 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,124 psi | 74% | 2769 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,459 psi | 79% | 2753 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,601 psi | 73% | 2789 fps | 95% |
| IMR 4831 | <<locked>> | 92% | 37,797 psi | 58% | 2674 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,551 psi | 59% | 2667 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 43,888 psi | 68% | 2720 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 49,458 psi | 76% | 2808 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,495 psi | 62% | 2687 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 42,032 psi | 65% | 2644 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,999 psi | 57% | 2589 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 41,437 psi | 64% | 2680 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 47,384 psi | 73% | 2815 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,901 psi | 63% | 2661 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 41,176 psi | 63% | 2674 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 37,043 psi | 57% | 2625 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 37,043 psi | 57% | 2667 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,347 psi | 56% | 2631 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 44,150 psi | 68% | 2818 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 43,613 psi | 67% | 2713 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,076 psi | 66% | 2740 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,282 psi | 73% | 2766 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 41% | 1634 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,081 psi | 76% | 2808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,514 psi | 72% | 2779 fps | 95.6% |
| ReloadSwiss RS 52 | 49.9 gr | 80% | 38,928 psi | 60% | 2730 fps | 96.6% |
| ReloadSwiss RS 60 | 50.7 gr | 80% | 32,053 psi | 49% | 2589 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,160 psi | 60% | 2740 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,366 psi | 65% | 2812 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 44,715 psi | 69% | 2710 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,899 psi | 60% | 2612 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,271 psi | 50% | 2510 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 52,098 psi | 80% | 2867 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,437 psi | 64% | 2680 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,495 psi | 62% | 2687 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,999 psi | 57% | 2589 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 47,384 psi | 73% | 2815 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,880 psi | 80% | 2825 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,301 psi | 51% | 2559 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,808 psi | 80% | 2812 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,901 psi | 64% | 2687 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,205 psi | 62% | 2671 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,351 psi | 65% | 2621 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,027 psi | 54% | 2484 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,125 psi | 77% | 2789 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 47,137 psi | 73% | 2799 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,974 psi | 65% | 2625 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,452 psi | 64% | 2687 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 33,286 psi | 51% | 2523 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 29,109 psi | 45% | 2497 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 47,877 psi | 74% | 2690 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,583 psi | 66% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,101 psi | 59% | 2602 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,827 psi | 60% | 2608 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,546 psi | 49% | 2457 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 38,870 psi | 60% | 2671 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,816 psi | 67% | 2717 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,420 psi | 58% | 2592 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 38,203 psi | 59% | 2674 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 98% | 36,129 psi | 56% | 2700 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,140 psi | 49% | 2484 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 43,105 psi | 66% | 2756 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 48,472 psi | 75% | 2894 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,624 psi | 61% | 2677 fps | 98% |
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 104 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 155gr | Norma Kalahari. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,120 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 155gr | Norma Kalahari 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.