Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 123gr | Sako Gamehead bullet and 90 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 52 and Hodgdon CFE223.
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>> | 92% | 57,682 psi | 89% | 3215 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 58,117 psi | 89% | 3320 fps | 98.1% |
| Accurate 2230 | <<locked>> | 82% | 55,463 psi | 85% | 3268 fps | 98% |
| Accurate 2460 | <<locked>> | 88% | 56,536 psi | 87% | 3241 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,071 psi | 85% | 3228 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 58,247 psi | 90% | 3304 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 58,088 psi | 89% | 3314 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 57,856 psi | 89% | 3166 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 58,262 psi | 90% | 3192 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 58,798 psi | 90% | 2500 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,855 psi | 87% | 3301 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 82% | 55,738 psi | 86% | 3146 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 57,725 psi | 89% | 3287 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 86% | 58,537 psi | 90% | 3297 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 56,043 psi | 86% | 3255 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 92% | 55,680 psi | 86% | 3251 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 57,522 psi | 88% | 3379 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 56,666 psi | 87% | 3409 fps | 98% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 57,000 psi | 88% | 3314 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 57,566 psi | 89% | 3235 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 57,870 psi | 89% | 3337 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,865 psi | 78% | 3301 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 82% | 56,826 psi | 87% | 3163 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 57,174 psi | 88% | 3156 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 56,913 psi | 88% | 3307 fps | 97.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 57,696 psi | 89% | 3330 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 92% | 58,624 psi | 90% | 3248 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,013 psi | 85% | 3284 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 90% | 56,913 psi | 88% | 3386 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 88% | 57,043 psi | 88% | 3274 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 58,378 psi | 90% | 3297 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,738 psi | 86% | 3278 fps | 96.9% |
| Hodgdon H4198 | <<locked>> | 82% | 56,376 psi | 87% | 3173 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 57,319 psi | 88% | 3317 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,188 psi | 86% | 3343 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,243 psi | 53% | 2005 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,332 psi | 85% | 3258 fps | 98.8% |
| IMR 3031 | <<locked>> | 94% | 56,188 psi | 86% | 3310 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 57,203 psi | 88% | 3271 fps | 98.3% |
| IMR 4198 | <<locked>> | 88% | 57,711 psi | 89% | 3196 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,825 psi | 86% | 3317 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 92% | 56,043 psi | 86% | 3255 fps | 99.4% |
| Lovex D073.4 | <<locked>> | 82% | 56,347 psi | 87% | 3255 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 88% | 56,710 psi | 87% | 3248 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 94% | 55,912 psi | 86% | 3278 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 57,188 psi | 88% | 3228 fps | 98.7% |
| Lovex S062 | <<locked>> | 98% | 56,376 psi | 87% | 3268 fps | 99.4% |
| Norma 200 | <<locked>> | 84% | 57,638 psi | 89% | 3209 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,390 psi | 85% | 3245 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 55,709 psi | 86% | 3255 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,956 psi | 88% | 3320 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 98% | 57,711 psi | 89% | 3346 fps | 98.7% |
| Ramshot TAC | <<locked>> | 92% | 57,261 psi | 88% | 3264 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,028 psi | 86% | 3287 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 90% | 57,943 psi | 89% | 3258 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,461 psi | 53% | 2051 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,985 psi | 86% | 3248 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 57,769 psi | 89% | 3409 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,331 psi | 84% | 3386 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 56,507 psi | 87% | 3241 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,811 psi | 86% | 3238 fps | 99.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,345 psi | 82% | 3248 fps | 98.7% |
| Shooters World AR Plus | <<locked>> | 82% | 56,347 psi | 87% | 3255 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,912 psi | 86% | 3278 fps | 99.9% |
| Shooters World Precision | <<locked>> | 98% | 56,376 psi | 87% | 3268 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 56,231 psi | 87% | 3212 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 57,595 psi | 89% | 2900 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,187 psi | 85% | 3248 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,492 psi | 85% | 3317 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 58,523 psi | 90% | 3255 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 55,114 psi | 85% | 3232 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,201 psi | 85% | 3261 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 57,928 psi | 89% | 3199 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 57,508 psi | 88% | 3186 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 57,899 psi | 89% | 3301 fps | 99.7% |
| Somchem S335 | <<locked>> | 94% | 56,666 psi | 87% | 3189 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 58,276 psi | 90% | 3287 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,085 psi | 83% | 3251 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,885 psi | 60% | 3035 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 82% | 55,564 psi | 85% | 3087 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 57,479 psi | 88% | 3173 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 57,638 psi | 89% | 3186 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 58,218 psi | 90% | 3268 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 56,347 psi | 87% | 3228 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,402 psi | 81% | 3182 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 92% | 57,014 psi | 88% | 3261 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 98% | 58,479 psi | 90% | 3281 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,921 psi | 74% | 3104 fps | 97.7% |
| Winchester 748 | <<locked>> | 92% | 56,130 psi | 86% | 3310 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 96% | 58,755 psi | 90% | 3333 fps | 99.3% |
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% | 39,566 psi | 61% | 2900 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 50,952 psi | 78% | 3192 fps | 96.8% |
| Accurate 2230 | <<locked>> | 80% | 51,779 psi | 80% | 3202 fps | 97.4% |
| Accurate 2460 | <<locked>> | 80% | 43,033 psi | 66% | 2999 fps | 99% |
| Accurate 2495 | <<locked>> | 80% | 32,068 psi | 49% | 2776 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 38,247 psi | 59% | 2930 fps | 97.8% |
| Accurate 4064 | <<locked>> | 80% | 30,342 psi | 47% | 2740 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 80% | 47,950 psi | 74% | 3005 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,312 psi | 74% | 3025 fps | 99.4% |
| ADI APS 450 | <<locked>> | 80% | 56,681 psi | 87% | 2467 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 41,365 psi | 64% | 2995 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 52,359 psi | 81% | 3094 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 45,295 psi | 70% | 3058 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 47,674 psi | 73% | 3120 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,377 psi | 59% | 2900 fps | 95.9% |
| Alliant AR-Comp | <<locked>> | 80% | 36,985 psi | 57% | 2930 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,092 psi | 68% | 3120 fps | 96.9% |
| Alliant Power Pro 2000-MR | 60.3 gr | 90% | 46,122 psi | 71% | 3199 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 38,725 psi | 60% | 2953 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,020 psi | 69% | 3028 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 41,989 psi | 65% | 3028 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,437 psi | 64% | 3094 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 53,476 psi | 82% | 3114 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,036 psi | 72% | 2992 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 46,311 psi | 71% | 3114 fps | 95.5% |
| Bofors RP3 | <<locked>> | 88% | 38,189 psi | 59% | 2956 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,466 psi | 62% | 2907 fps | 97.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,419 psi | 56% | 2904 fps | 96% |
| Hodgdon CFE223 | 56.2 gr | 82% | 42,844 psi | 66% | 3110 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 43,555 psi | 67% | 3038 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 44,309 psi | 68% | 3054 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 94% | 48,617 psi | 75% | 3146 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 52,765 psi | 81% | 3114 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 39,160 psi | 60% | 2953 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 37,463 psi | 58% | 2959 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,440 psi | 39% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,118 psi | 62% | 2956 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 35,215 psi | 54% | 2904 fps | 99% |
| IMR 4064 | <<locked>> | 88% | 41,829 psi | 64% | 2979 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 45,614 psi | 70% | 2999 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 40,350 psi | 62% | 3009 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,377 psi | 59% | 2900 fps | 95.9% |
| Lovex D073.4 | <<locked>> | 80% | 52,344 psi | 81% | 3189 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 42,960 psi | 66% | 2999 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 34,476 psi | 53% | 2848 fps | 96.6% |
| Lovex S060 | <<locked>> | 84% | 42,250 psi | 65% | 2943 fps | 95.7% |
| Lovex S062 | <<locked>> | 84% | 36,492 psi | 56% | 2867 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 50,734 psi | 78% | 3100 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,679 psi | 55% | 2831 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 35,636 psi | 55% | 2854 fps | 97.7% |
| Norma 203B | <<locked>> | 88% | 41,234 psi | 63% | 3015 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 88% | 41,031 psi | 63% | 3025 fps | 95% |
| Ramshot TAC | <<locked>> | 90% | 53,534 psi | 82% | 3199 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 42,714 psi | 66% | 3028 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,771 psi | 64% | 2953 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,541 psi | 39% | 1837 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,149 psi | 66% | 3012 fps | 98.5% |
| ReloadSwiss RS 52 | 57.1 gr | 88% | 43,685 psi | 67% | 3140 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 33,895 psi | 52% | 2904 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 39,363 psi | 61% | 2910 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 36,114 psi | 56% | 2835 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 90% | 38,261 psi | 59% | 2946 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 52,344 psi | 81% | 3189 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,476 psi | 53% | 2848 fps | 96.6% |
| Shooters World Precision | <<locked>> | 84% | 36,492 psi | 56% | 2867 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,759 psi | 70% | 3025 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,083 psi | 80% | 2825 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,182 psi | 74% | 3123 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,598 psi | 66% | 3068 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,585 psi | 70% | 3041 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 51,300 psi | 79% | 3163 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,598 psi | 66% | 3018 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,420 psi | 58% | 2818 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,589 psi | 47% | 2654 fps | 97.1% |
| Somchem S321 | <<locked>> | 80% | 41,089 psi | 63% | 2986 fps | 97.1% |
| Somchem S335 | <<locked>> | 80% | 36,869 psi | 57% | 2818 fps | 98.7% |
| Somchem S341 | <<locked>> | 84% | 41,220 psi | 63% | 2972 fps | 95.2% |
| Somchem S355 | <<locked>> | 90% | 39,465 psi | 61% | 2959 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 36,564 psi | 56% | 2976 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 52,228 psi | 80% | 3038 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,511 psi | 65% | 2923 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,449 psi | 58% | 2828 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 32,648 psi | 50% | 2785 fps | 99.1% |
| Vihtavuori N140 | <<locked>> | 80% | 33,750 psi | 52% | 2785 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 88% | 35,201 psi | 54% | 2831 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,334 psi | 59% | 2897 fps | 96% |
| Vihtavuori N540 | <<locked>> | 80% | 32,430 psi | 50% | 2759 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 39,117 psi | 60% | 2913 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 37,115 psi | 57% | 2930 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,117 psi | 60% | 2956 fps | 95.4% |
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 90 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 123gr | Sako Gamehead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,409 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,409 fps. Accurate 4064 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 52, Hodgdon CFE223 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 123gr | Sako Gamehead 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.