Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 145gr | Prvi Partizan FMJ BT bullet and 102 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% | 56,985 psi | 88% | 2966 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,463 psi | 85% | 2992 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 58,552 psi | 90% | 3031 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,305 psi | 88% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 58,711 psi | 90% | 3018 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 58,146 psi | 89% | 3074 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,415 psi | 78% | 3028 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,825 psi | 86% | 2904 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,231 psi | 87% | 2933 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,999 psi | 86% | 3061 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 56,985 psi | 88% | 3054 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 57,203 psi | 88% | 3035 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 58,682 psi | 90% | 3064 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,434 psi | 85% | 2999 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,942 psi | 88% | 3130 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,622 psi | 86% | 3176 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,652 psi | 87% | 3081 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,507 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,363 psi | 88% | 3100 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,356 psi | 76% | 3035 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,595 psi | 89% | 3202 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,288 psi | 85% | 2900 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,970 psi | 86% | 3074 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 57,276 psi | 88% | 3097 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,740 psi | 89% | 3051 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,058 psi | 88% | 2999 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 58,175 psi | 89% | 3100 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,043 psi | 86% | 3140 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 84% | 55,753 psi | 86% | 3015 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,159 psi | 88% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 58,537 psi | 90% | 3104 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,998 psi | 83% | 3087 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 56,492 psi | 87% | 3071 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,455 psi | 70% | 2910 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,579 psi | 86% | 3104 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,998 psi | 54% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 58,044 psi | 89% | 3077 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 55,999 psi | 86% | 3061 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,478 psi | 87% | 3038 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,913 psi | 88% | 3015 fps | 96.6% |
| IMR 4198 | <<locked>> | 84% | 56,739 psi | 87% | 2933 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,347 psi | 87% | 3035 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,935 psi | 74% | 2966 fps | 97.7% |
| IMR 4895 | <<locked>> | 92% | 55,332 psi | 85% | 3081 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 58,682 psi | 90% | 3064 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,448 psi | 85% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,419 psi | 85% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,927 psi | 86% | 2986 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 55,985 psi | 86% | 3035 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,187 psi | 85% | 3022 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,663 psi | 81% | 2999 fps | 96% |
| Norma 201 | <<locked>> | 92% | 58,189 psi | 90% | 3058 fps | 100% |
| Norma 202 | <<locked>> | 92% | 58,668 psi | 90% | 3061 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,507 psi | 87% | 3087 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 50,082 psi | 77% | 3022 fps | 98% |
| Ramshot Big Game | <<locked>> | 94% | 57,174 psi | 88% | 3114 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,298 psi | 76% | 3009 fps | 96% |
| Ramshot TAC | <<locked>> | 88% | 55,579 psi | 86% | 3025 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 90% | 58,653 psi | 90% | 3104 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,318 psi | 87% | 3015 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 54% | 1900 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 58,479 psi | 90% | 3054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,550 psi | 85% | 3028 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 57,740 psi | 89% | 3173 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,421 psi | 88% | 3209 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,125 psi | 77% | 3048 fps | 97.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,850 psi | 78% | 3074 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,651 psi | 86% | 2992 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 58,581 psi | 90% | 3051 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,855 psi | 87% | 3081 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,740 psi | 89% | 3051 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,187 psi | 85% | 3022 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,419 psi | 85% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,985 psi | 86% | 3035 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,663 psi | 81% | 2999 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 58,363 psi | 90% | 3022 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,493 psi | 88% | 3045 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,245 psi | 85% | 3091 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,450 psi | 88% | 2995 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,783 psi | 89% | 3058 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,957 psi | 89% | 3081 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,710 psi | 87% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,507 psi | 87% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 2976 fps | 96.4% |
| Somchem S321 | <<locked>> | 86% | 56,594 psi | 87% | 3051 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,767 psi | 86% | 2946 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,188 psi | 88% | 3051 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 57,421 psi | 88% | 3081 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,614 psi | 69% | 2966 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 56,289 psi | 87% | 2917 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,753 psi | 87% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,885 psi | 89% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,593 psi | 86% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,405 psi | 85% | 3009 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,562 psi | 81% | 3018 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 88% | 55,869 psi | 86% | 3015 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 57,551 psi | 89% | 3035 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,750 psi | 80% | 3025 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,737 psi | 83% | 3009 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 55,201 psi | 85% | 3061 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,998 psi | 83% | 3087 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 92% | 58,044 psi | 89% | 3094 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% | 44,353 psi | 68% | 2772 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,544 psi | 75% | 2884 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,970 psi | 57% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,642 psi | 67% | 2831 fps | 99.7% |
| Accurate 2700 | <<locked>> | 92% | 54,969 psi | 85% | 2963 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,969 psi | 54% | 2661 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 38,218 psi | 59% | 2789 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 52,489 psi | 81% | 2854 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,895 psi | 81% | 2881 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,872 psi | 63% | 2779 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 36,927 psi | 57% | 2671 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 53,476 psi | 82% | 2982 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,859 psi | 66% | 2795 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 42,453 psi | 65% | 2799 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,879 psi | 77% | 3012 fps | 99.3% |
| Alliant Power Pro 2000-MR | 54.4 gr | 82% | 39,595 psi | 61% | 2851 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,084 psi | 52% | 2638 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,096 psi | 77% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,724 psi | 56% | 2700 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,653 psi | 59% | 2802 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,810 psi | 55% | 2762 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,938 psi | 80% | 2851 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,900 psi | 61% | 2772 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 33,402 psi | 51% | 2631 fps | 96% |
| Bofors RP7 | <<locked>> | 98% | 54,317 psi | 84% | 2995 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,701 psi | 69% | 2789 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,249 psi | 63% | 2808 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,411 psi | 70% | 2953 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 48,834 psi | 75% | 2907 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,850 psi | 77% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 42,148 psi | 65% | 2812 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 98% | 50,430 psi | 78% | 3025 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,191 psi | 63% | 2792 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,185 psi | 51% | 2631 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,014 psi | 57% | 2749 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 40% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,537 psi | 61% | 2740 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 40,321 psi | 62% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,376 psi | 56% | 2651 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,256 psi | 77% | 2900 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,227 psi | 77% | 2838 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,765 psi | 81% | 2976 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 39,349 psi | 61% | 2795 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,565 psi | 58% | 2736 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,859 psi | 66% | 2795 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 48,283 psi | 74% | 2887 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,537 psi | 61% | 2759 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 41,191 psi | 63% | 2717 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 36,172 psi | 56% | 2657 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 45,803 psi | 70% | 2858 fps | 95.6% |
| Lovex S070 | <<locked>> | 98% | 49,255 psi | 76% | 2940 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 40,001 psi | 62% | 2733 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 40,205 psi | 62% | 2749 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 36,085 psi | 56% | 2690 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 41,205 psi | 63% | 2848 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 35,418 psi | 54% | 2694 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 98% | 46,151 psi | 71% | 2949 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 42,830 psi | 66% | 2789 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,047 psi | 65% | 2812 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,311 psi | 71% | 2841 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 40% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,196 psi | 74% | 2890 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,762 psi | 75% | 2913 fps | 95.5% |
| ReloadSwiss RS 52 | 51.4 gr | 80% | 37,971 psi | 58% | 2799 fps | 95.7% |
| ReloadSwiss RS 60 | 52.2 gr | 80% | 31,314 psi | 48% | 2648 fps | 96.6% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,741 psi | 63% | 2864 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,266 psi | 68% | 2940 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,888 psi | 68% | 2792 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,087 psi | 59% | 2680 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 33,634 psi | 52% | 2631 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 98% | 54,317 psi | 84% | 2995 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,803 psi | 70% | 2858 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,537 psi | 61% | 2759 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 36,172 psi | 56% | 2657 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 98% | 49,255 psi | 76% | 2940 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,778 psi | 78% | 2904 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,853 psi | 83% | 2992 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,795 psi | 54% | 2684 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,879 psi | 78% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,857 psi | 63% | 2756 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,363 psi | 61% | 2740 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,611 psi | 64% | 2700 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,345 psi | 53% | 2556 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,243 psi | 80% | 2917 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 46,253 psi | 71% | 2881 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 41,118 psi | 63% | 2703 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 40,669 psi | 63% | 2759 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 34,592 psi | 53% | 2641 fps | 95.8% |
| Somchem S365 | <<locked>> | 88% | 30,313 psi | 47% | 2615 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 47,065 psi | 72% | 2779 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,785 psi | 64% | 2703 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,217 psi | 57% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,898 psi | 58% | 2677 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 30,748 psi | 47% | 2520 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 40,567 psi | 62% | 2795 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,801 psi | 66% | 2789 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,637 psi | 56% | 2664 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 92% | 39,740 psi | 61% | 2792 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,678 psi | 52% | 2602 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 42,076 psi | 65% | 2831 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 50,430 psi | 78% | 3025 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,653 psi | 59% | 2743 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 112 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 145gr | Prvi Partizan FMJ BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,209 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 | 145gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, IMR 4350 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.