Load Specifications
Bullet Manufacturer:Swift
Bullet Weight:150 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:1:12.0
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 150gr | Swift Scirocco bullet and 103 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 Ramshot Big Game.
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% | 56,318 psi | 87% | 2897 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 58,711 psi | 90% | 2976 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 58,015 psi | 89% | 2966 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,797 psi | 87% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 58,392 psi | 90% | 2956 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 57,740 psi | 89% | 3009 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,748 psi | 77% | 2963 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,593 psi | 86% | 2841 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,999 psi | 86% | 2867 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,390 psi | 85% | 2992 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 56,275 psi | 87% | 2982 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 56,652 psi | 87% | 2966 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 58,102 psi | 89% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 58,305 psi | 90% | 2972 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,217 psi | 86% | 3058 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,911 psi | 84% | 3104 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,014 psi | 86% | 3012 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,217 psi | 86% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,681 psi | 87% | 3031 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,646 psi | 75% | 2966 fps | 98.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,637 psi | 87% | 3127 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 58,291 psi | 90% | 2881 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,216 psi | 85% | 3002 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 56,434 psi | 87% | 3025 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 2982 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,623 psi | 87% | 2933 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,319 psi | 88% | 3028 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,593 psi | 86% | 3074 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 86% | 58,798 psi | 90% | 2995 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,565 psi | 87% | 2976 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 58,073 psi | 89% | 3038 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,200 psi | 82% | 3015 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 55,912 psi | 86% | 3002 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,759 psi | 69% | 2841 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 58,639 psi | 90% | 3087 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 54% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,290 psi | 88% | 3005 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,448 psi | 85% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,709 psi | 86% | 2966 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,304 psi | 87% | 2946 fps | 96.6% |
| IMR 4198 | <<locked>> | 84% | 56,202 psi | 86% | 2864 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,622 psi | 86% | 2963 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,297 psi | 73% | 2900 fps | 97.7% |
| IMR 4895 | <<locked>> | 94% | 58,131 psi | 89% | 3064 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 58,102 psi | 89% | 2999 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 58,813 psi | 90% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 58,639 psi | 90% | 3022 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 58,798 psi | 90% | 2969 fps | 99.8% |
| Lovex S062 | <<locked>> | 96% | 58,798 psi | 90% | 3015 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,520 psi | 84% | 2953 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,025 psi | 80% | 2933 fps | 96% |
| Norma 201 | <<locked>> | 92% | 57,595 psi | 89% | 2989 fps | 100% |
| Norma 202 | <<locked>> | 92% | 58,102 psi | 89% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,825 psi | 86% | 3018 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 49,400 psi | 76% | 2956 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 56,521 psi | 87% | 3045 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,631 psi | 75% | 2943 fps | 96% |
| Ramshot TAC | <<locked>> | 90% | 58,798 psi | 90% | 3012 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 58,102 psi | 89% | 3035 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,898 psi | 86% | 2946 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 54% | 1850 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,783 psi | 89% | 2982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 58,436 psi | 90% | 3015 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,956 psi | 88% | 3100 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,608 psi | 87% | 3136 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,472 psi | 76% | 2982 fps | 97.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,140 psi | 77% | 3002 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 90% | 58,523 psi | 90% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 58,044 psi | 89% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,260 psi | 87% | 3015 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 2982 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,520 psi | 84% | 2953 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 58,639 psi | 90% | 3022 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 58,798 psi | 90% | 3015 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,025 psi | 80% | 2933 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,754 psi | 89% | 2953 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 58,697 psi | 90% | 2621 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,087 psi | 88% | 2979 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 58,146 psi | 89% | 3074 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,130 psi | 88% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,927 psi | 88% | 2989 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,377 psi | 88% | 3015 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,173 psi | 86% | 2884 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,985 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,143 psi | 85% | 2904 fps | 96.3% |
| Somchem S321 | <<locked>> | 86% | 55,883 psi | 86% | 2982 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 58,595 psi | 90% | 2927 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,391 psi | 87% | 2982 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 56,536 psi | 87% | 3009 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,034 psi | 68% | 2900 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 55,840 psi | 86% | 2851 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,202 psi | 86% | 2871 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,174 psi | 88% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 58,682 psi | 90% | 2969 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 58,581 psi | 90% | 2992 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,924 psi | 80% | 2956 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 88% | 55,259 psi | 85% | 2949 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 56,753 psi | 87% | 2963 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,981 psi | 78% | 2959 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,069 psi | 82% | 2940 fps | 99.7% |
| Winchester 748 | <<locked>> | 90% | 58,320 psi | 90% | 3048 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,200 psi | 82% | 3015 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,217 psi | 88% | 3022 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% | 43,947 psi | 68% | 2707 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,993 psi | 74% | 2815 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,622 psi | 56% | 2618 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,062 psi | 66% | 2766 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 54,491 psi | 84% | 2897 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,635 psi | 53% | 2602 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 37,565 psi | 58% | 2723 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 52,156 psi | 80% | 2792 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,547 psi | 81% | 2815 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,437 psi | 62% | 2717 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 36,709 psi | 56% | 2612 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 53,040 psi | 82% | 2917 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,453 psi | 65% | 2733 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 41,785 psi | 64% | 2733 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,298 psi | 76% | 2940 fps | 99.3% |
| Alliant Power Pro 2000-MR | 52.4 gr | 82% | 39,015 psi | 60% | 2782 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,649 psi | 52% | 2575 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,647 psi | 76% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,274 psi | 56% | 2641 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,218 psi | 59% | 2736 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,243 psi | 51% | 2641 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,517 psi | 79% | 2789 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,494 psi | 61% | 2710 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 32,996 psi | 51% | 2575 fps | 96% |
| Bofors RP7 | <<locked>> | 98% | 53,505 psi | 82% | 2927 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,483 psi | 68% | 2730 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,770 psi | 63% | 2743 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,730 psi | 69% | 2884 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 80% | 48,573 psi | 75% | 2844 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,342 psi | 76% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 41,597 psi | 64% | 2749 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 98% | 49,632 psi | 76% | 2956 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,727 psi | 63% | 2730 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,867 psi | 54% | 2625 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,535 psi | 56% | 2684 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 40% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,102 psi | 60% | 2677 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 39,929 psi | 61% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,071 psi | 55% | 2592 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,748 psi | 77% | 2835 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 49,835 psi | 77% | 2772 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,257 psi | 80% | 2907 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 38,725 psi | 60% | 2730 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,101 psi | 57% | 2674 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,453 psi | 65% | 2733 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 47,819 psi | 74% | 2822 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,117 psi | 60% | 2697 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 40,915 psi | 63% | 2657 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 35,897 psi | 55% | 2602 fps | 97.3% |
| Lovex S065 | <<locked>> | 94% | 45,426 psi | 70% | 2795 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 48,776 psi | 75% | 2877 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,740 psi | 61% | 2674 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 39,697 psi | 61% | 2687 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 35,650 psi | 55% | 2628 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 40,640 psi | 63% | 2782 fps | 95.8% |
| Ramshot Big Game | 51.1 gr | 80% | 35,012 psi | 54% | 2631 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 98% | 45,455 psi | 70% | 2881 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,482 psi | 65% | 2726 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,611 psi | 64% | 2749 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,876 psi | 71% | 2779 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 40% | 1657 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,529 psi | 73% | 2822 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,167 psi | 74% | 2844 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,565 psi | 58% | 2736 fps | 95.7% |
| ReloadSwiss RS 60 | 50.4 gr | 80% | 31,096 psi | 48% | 2592 fps | 96.7% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,176 psi | 62% | 2802 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,859 psi | 67% | 2874 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,468 psi | 67% | 2726 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,782 psi | 58% | 2625 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 33,257 psi | 51% | 2572 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 98% | 53,505 psi | 82% | 2927 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,426 psi | 70% | 2795 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,117 psi | 60% | 2697 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 35,897 psi | 55% | 2602 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 98% | 48,776 psi | 75% | 2877 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,285 psi | 77% | 2838 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,709 psi | 86% | 2585 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,345 psi | 82% | 2923 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,360 psi | 53% | 2621 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,386 psi | 78% | 2831 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,451 psi | 62% | 2694 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,030 psi | 60% | 2680 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,205 psi | 63% | 2638 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,968 psi | 52% | 2497 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,561 psi | 79% | 2848 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,832 psi | 71% | 2815 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 40,828 psi | 63% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,219 psi | 62% | 2697 fps | 97% |
| Somchem S355 | <<locked>> | 80% | 32,227 psi | 50% | 2530 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 29,892 psi | 46% | 2552 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,615 psi | 72% | 2713 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,365 psi | 64% | 2638 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,782 psi | 57% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,623 psi | 58% | 2621 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 30,516 psi | 47% | 2467 fps | 96% |
| Vihtavuori N160 | <<locked>> | 92% | 39,987 psi | 62% | 2730 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,380 psi | 65% | 2726 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 36,085 psi | 56% | 2602 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 92% | 39,189 psi | 60% | 2730 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,243 psi | 51% | 2543 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,539 psi | 64% | 2769 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 49,908 psi | 77% | 2959 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,218 psi | 59% | 2680 fps | 97.2% |
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 103 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 150gr | Swift Scirocco. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,136 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 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 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, Ramshot Big Game rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 150gr | Swift Scirocco 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.