Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:152 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 | 152gr | Lehigh Defense Controlled Chaos bullet and 105 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% | 56,724 psi | 87% | 2884 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,492 psi | 85% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 58,508 psi | 90% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,276 psi | 88% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 58,798 psi | 90% | 2943 fps | 96.2% |
| Accurate 4064 | <<locked>> | 96% | 58,189 psi | 90% | 2995 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,241 psi | 77% | 2953 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 82% | 55,840 psi | 86% | 2828 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,275 psi | 87% | 2854 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,782 psi | 86% | 2979 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 56,724 psi | 87% | 2972 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 57,000 psi | 88% | 2953 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 58,508 psi | 90% | 2986 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,216 psi | 85% | 2917 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,666 psi | 87% | 3045 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,332 psi | 85% | 3094 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,434 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,550 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,130 psi | 88% | 3018 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,327 psi | 76% | 2959 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,464 psi | 88% | 3120 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,317 psi | 85% | 2822 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,622 psi | 86% | 2992 fps | 99.1% |
| Bofors RP3 | <<locked>> | 96% | 57,246 psi | 88% | 3015 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 2972 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,971 psi | 88% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,754 psi | 89% | 3015 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,057 psi | 86% | 3064 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 55,753 psi | 86% | 2936 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,971 psi | 88% | 2959 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 58,566 psi | 90% | 3028 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,679 psi | 83% | 3009 fps | 96.4% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 58,566 psi | 90% | 3031 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 90% | 56,362 psi | 87% | 2992 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,411 psi | 70% | 2838 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,492 psi | 85% | 3022 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,027 psi | 85% | 3041 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 54% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,696 psi | 89% | 2992 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,927 psi | 86% | 2979 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,391 psi | 87% | 2959 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,942 psi | 88% | 2940 fps | 96.8% |
| IMR 4198 | <<locked>> | 84% | 56,492 psi | 87% | 2848 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,985 psi | 86% | 2953 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,732 psi | 73% | 2890 fps | 97.9% |
| IMR 4895 | <<locked>> | 94% | 58,566 psi | 90% | 3051 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 58,508 psi | 90% | 2986 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,332 psi | 85% | 2920 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,376 psi | 85% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,883 psi | 86% | 2910 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 55,898 psi | 86% | 2956 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,926 psi | 85% | 2943 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,446 psi | 81% | 2923 fps | 96.2% |
| Norma 201 | <<locked>> | 92% | 57,972 psi | 89% | 2976 fps | 100% |
| Norma 202 | <<locked>> | 92% | 58,494 psi | 90% | 2979 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,275 psi | 87% | 3005 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 49,922 psi | 77% | 2946 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 94% | 57,043 psi | 88% | 3035 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,052 psi | 75% | 2933 fps | 96.2% |
| Ramshot TAC | <<locked>> | 88% | 55,695 psi | 86% | 2949 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 90% | 58,566 psi | 90% | 3022 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,275 psi | 87% | 2936 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 54% | 1841 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 58,131 psi | 89% | 2969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,303 psi | 85% | 2949 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 57,537 psi | 89% | 3091 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,174 psi | 88% | 3127 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,980 psi | 77% | 2976 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,560 psi | 78% | 2995 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 88% | 55,637 psi | 86% | 2913 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 58,421 psi | 90% | 2972 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,768 psi | 87% | 3002 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 2972 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,926 psi | 85% | 2943 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,376 psi | 85% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,898 psi | 86% | 2956 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,446 psi | 81% | 2923 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 58,146 psi | 89% | 2940 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,479 psi | 88% | 2966 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 58,639 psi | 90% | 3064 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,479 psi | 88% | 2913 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,682 psi | 89% | 2979 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,812 psi | 89% | 3002 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,536 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,376 psi | 87% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,912 psi | 86% | 2900 fps | 96.6% |
| Somchem S321 | <<locked>> | 86% | 56,579 psi | 87% | 2972 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,782 psi | 86% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,884 psi | 88% | 2969 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 57,000 psi | 88% | 2999 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,440 psi | 68% | 2890 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 86% | 56,202 psi | 86% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,536 psi | 87% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,914 psi | 89% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,477 psi | 85% | 2907 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,317 psi | 85% | 2930 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,417 psi | 81% | 2943 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 88% | 55,608 psi | 86% | 2933 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,464 psi | 88% | 2956 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 2946 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,347 psi | 57% | 2749 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,534 psi | 82% | 2933 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 55,187 psi | 85% | 2982 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 3012 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,653 psi | 89% | 3012 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% | 44,483 psi | 68% | 2700 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,327 psi | 74% | 2805 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,956 psi | 57% | 2608 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,439 psi | 67% | 2756 fps | 99.8% |
| Accurate 2700 | <<locked>> | 92% | 54,897 psi | 84% | 2887 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 34,954 psi | 54% | 2592 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 37,956 psi | 58% | 2717 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 52,721 psi | 81% | 2782 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,113 psi | 82% | 2805 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,727 psi | 63% | 2707 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 36,970 psi | 57% | 2605 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 53,432 psi | 82% | 2900 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,728 psi | 66% | 2720 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 42,409 psi | 65% | 2723 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,676 psi | 76% | 2927 fps | 99.4% |
| Alliant Power Pro 2000-MR | 52.3 gr | 82% | 39,349 psi | 61% | 2776 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,098 psi | 52% | 2572 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,937 psi | 77% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,535 psi | 56% | 2631 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,508 psi | 59% | 2730 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,533 psi | 52% | 2635 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,866 psi | 80% | 2776 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,798 psi | 61% | 2703 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 33,489 psi | 52% | 2569 fps | 96.4% |
| Bofors RP7 | <<locked>> | 98% | 53,954 psi | 83% | 2917 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,730 psi | 69% | 2717 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,321 psi | 64% | 2740 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,353 psi | 70% | 2877 fps | 98% |
| Hodgdon H322 | <<locked>> | 80% | 48,921 psi | 75% | 2831 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,690 psi | 76% | 2854 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,276 psi | 60% | 2680 fps | 95% |
| Hodgdon H414 | <<locked>> | 98% | 50,343 psi | 77% | 2949 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 98% | 54,969 psi | 85% | 2972 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 41,031 psi | 63% | 2717 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,098 psi | 51% | 2566 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,028 psi | 57% | 2680 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 98% | 51,271 psi | 79% | 2976 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 40% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,566 psi | 61% | 2671 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 40,234 psi | 62% | 2723 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,361 psi | 56% | 2585 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,067 psi | 77% | 2822 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 50,372 psi | 77% | 2762 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,734 psi | 77% | 2848 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 39,334 psi | 61% | 2726 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 37,405 psi | 58% | 2664 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 80% | 42,728 psi | 66% | 2720 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 48,153 psi | 74% | 2808 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,494 psi | 61% | 2687 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 41,147 psi | 63% | 2648 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 36,129 psi | 56% | 2592 fps | 97.5% |
| Lovex S065 | <<locked>> | 92% | 42,960 psi | 66% | 2730 fps | 95.1% |
| Lovex S070 | <<locked>> | 98% | 49,226 psi | 76% | 2867 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 40,001 psi | 62% | 2664 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 40,205 psi | 62% | 2677 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,926 psi | 55% | 2618 fps | 96% |
| Norma URP | <<locked>> | 92% | 38,392 psi | 59% | 2717 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 35,476 psi | 55% | 2628 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 98% | 45,832 psi | 71% | 2874 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 42,801 psi | 66% | 2717 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,959 psi | 65% | 2740 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,398 psi | 71% | 2772 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 40% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,109 psi | 74% | 2812 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,585 psi | 70% | 2782 fps | 95% |
| ReloadSwiss RS 52 | 49.5 gr | 80% | 37,913 psi | 58% | 2730 fps | 96% |
| ReloadSwiss RS 60 | 50.3 gr | 80% | 31,328 psi | 48% | 2585 fps | 97% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,538 psi | 62% | 2792 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,295 psi | 68% | 2871 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 43,758 psi | 67% | 2717 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,014 psi | 58% | 2612 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 31,386 psi | 48% | 2507 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 98% | 53,954 psi | 83% | 2917 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,960 psi | 66% | 2730 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,494 psi | 61% | 2687 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 36,129 psi | 56% | 2592 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 98% | 49,226 psi | 76% | 2867 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,865 psi | 78% | 2831 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,737 psi | 83% | 2910 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,635 psi | 53% | 2612 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,676 psi | 78% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,785 psi | 63% | 2684 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,334 psi | 61% | 2674 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,423 psi | 64% | 2628 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,200 psi | 53% | 2487 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,863 psi | 75% | 2789 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 46,166 psi | 71% | 2805 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 41,104 psi | 63% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,567 psi | 62% | 2687 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 32,460 psi | 50% | 2520 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 30,139 psi | 46% | 2546 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 46,891 psi | 72% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,640 psi | 64% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,101 psi | 57% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,942 psi | 58% | 2608 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 30,763 psi | 47% | 2457 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 92% | 40,306 psi | 62% | 2720 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 42,888 psi | 66% | 2720 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 80% | 36,550 psi | 56% | 2595 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 39,566 psi | 61% | 2723 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 34,998 psi | 54% | 2694 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,678 psi | 52% | 2539 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 42,090 psi | 65% | 2759 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 50,343 psi | 77% | 2949 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,479 psi | 59% | 2674 fps | 97.4% |
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 105 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 152gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,127 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 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 152.0 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, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 152gr | Lehigh Defense Controlled Chaos 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.