Load Specifications
Load data in caliber .300 Win. Mag. with .310 | 123gr | Hornady SST bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Hodgdon LEVERevolution.
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>> | 84% | 55,361 psi | 89% | 3245 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,404 psi | 87% | 3268 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,418 psi | 87% | 3317 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 54,375 psi | 87% | 3314 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,694 psi | 88% | 3386 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 54,636 psi | 88% | 3343 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 92% | 55,840 psi | 90% | 3340 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,679 psi | 86% | 3294 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 84% | 54,259 psi | 87% | 3281 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,418 psi | 87% | 3465 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,840 psi | 90% | 3366 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,347 psi | 90% | 3389 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,651 psi | 89% | 3451 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,345 psi | 86% | 3428 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,871 psi | 64% | 3120 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,933 psi | 72% | 3301 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,621 psi | 88% | 3350 fps | 98.8% |
| Bofors RP3 | <<locked>> | 90% | 53,040 psi | 85% | 3323 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,332 psi | 89% | 3281 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,055 psi | 85% | 3314 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,027 psi | 88% | 3428 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 53,316 psi | 85% | 3284 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,128 psi | 87% | 3330 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 94% | 55,535 psi | 89% | 3406 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 86% | 55,172 psi | 88% | 3356 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,938 psi | 83% | 3310 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,042 psi | 88% | 3392 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 57% | 2123 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,274 psi | 89% | 3340 fps | 99.7% |
| IMR 3031 | <<locked>> | 88% | 53,505 psi | 86% | 3323 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,331 psi | 87% | 3307 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,795 psi | 86% | 3268 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,216 psi | 89% | 3317 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,849 psi | 78% | 3261 fps | 97.8% |
| IMR 4895 | <<locked>> | 88% | 54,346 psi | 87% | 3366 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 84% | 53,679 psi | 86% | 3294 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 86% | 54,650 psi | 88% | 3320 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,128 psi | 87% | 3264 fps | 99.4% |
| Lovex S062 | <<locked>> | 90% | 54,998 psi | 88% | 3320 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 54,592 psi | 88% | 3307 fps | 97.5% |
| Lovex S070 | <<locked>> | 98% | 55,521 psi | 89% | 3343 fps | 96.6% |
| Norma 201 | <<locked>> | 86% | 53,490 psi | 86% | 3284 fps | 99.8% |
| Norma 202 | <<locked>> | 86% | 53,882 psi | 86% | 3291 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,593 psi | 89% | 3373 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 53,461 psi | 86% | 3369 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 88% | 52,649 psi | 84% | 3330 fps | 99.1% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,086 psi | 90% | 3422 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 54,085 psi | 87% | 3297 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,548 psi | 86% | 3320 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,505 psi | 87% | 3287 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 57% | 2172 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,230 psi | 87% | 3304 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,171 psi | 85% | 3396 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,098 psi | 85% | 3438 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,375 psi | 87% | 3402 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 53,998 psi | 87% | 3432 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 84% | 54,317 psi | 87% | 3278 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,896 psi | 86% | 3284 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 56,434 psi | 90% | 3369 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,592 psi | 88% | 3307 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,650 psi | 88% | 3320 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,998 psi | 88% | 3320 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 55,521 psi | 89% | 3343 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,665 psi | 88% | 3376 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,202 psi | 90% | 3337 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,200 psi | 85% | 3307 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,839 psi | 88% | 3232 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,216 psi | 89% | 3222 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,056 psi | 88% | 3255 fps | 96.3% |
| Somchem S321 | <<locked>> | 82% | 55,013 psi | 88% | 3327 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,360 psi | 87% | 3225 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,724 psi | 89% | 3327 fps | 99.5% |
| Somchem S355 | <<locked>> | 92% | 53,214 psi | 85% | 3310 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 3376 fps | 100% |
| Unknown powder | <<locked>> | 96% | 54,549 psi | 87% | 3379 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 82% | 53,243 psi | 85% | 3179 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,462 psi | 87% | 3212 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 53,679 psi | 86% | 3255 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,635 psi | 86% | 3258 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,520 psi | 87% | 3291 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,071 psi | 88% | 3346 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,026 psi | 85% | 3294 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 88% | 53,519 psi | 86% | 3284 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,492 psi | 89% | 3402 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,816 psi | 70% | 3215 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,011 psi | 85% | 3284 fps | 99.7% |
| Winchester 748 | <<locked>> | 82% | 54,752 psi | 88% | 3353 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,535 psi | 89% | 3406 fps | 96.5% |
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% | 48,747 psi | 78% | 3140 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,655 psi | 67% | 3038 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,239 psi | 76% | 3189 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 39,378 psi | 63% | 3022 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 41,017 psi | 66% | 3110 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 45,005 psi | 72% | 3150 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,247 psi | 61% | 2969 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,050 psi | 75% | 3166 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 47,442 psi | 76% | 3166 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,118 psi | 66% | 3163 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,913 psi | 61% | 2992 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,698 psi | 65% | 3068 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 40,495 psi | 65% | 3120 fps | 95.5% |
| Alliant Reloder-17 | 66.9 gr | 82% | 35,201 psi | 56% | 3002 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 35,215 psi | 56% | 2992 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 41,887 psi | 67% | 3225 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,512 psi | 71% | 3150 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 37,681 psi | 60% | 2992 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,834 psi | 78% | 3163 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,224 psi | 74% | 3186 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,213 psi | 82% | 3353 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 49,995 psi | 80% | 3225 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 41,249 psi | 66% | 3064 fps | 95% |
| Hodgdon H414 | <<locked>> | 92% | 51,648 psi | 83% | 3333 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 45,426 psi | 73% | 3166 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,882 psi | 56% | 2933 fps | 95.4% |
| Hodgdon LEVERevolution | 63.6 gr | 80% | 39,131 psi | 63% | 3061 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 42% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,364 psi | 65% | 3031 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 41,292 psi | 66% | 3094 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,492 psi | 60% | 2946 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 50,821 psi | 81% | 3209 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,721 psi | 83% | 3251 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 40,190 psi | 64% | 3074 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,713 psi | 67% | 3104 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 47,050 psi | 75% | 3166 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 44,309 psi | 71% | 3130 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 45,107 psi | 72% | 3087 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 40,205 psi | 64% | 3022 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 45,237 psi | 73% | 3123 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 48,834 psi | 78% | 3215 fps | 95% |
| Norma 201 | <<locked>> | 80% | 44,150 psi | 71% | 3104 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 44,411 psi | 71% | 3117 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 40,089 psi | 64% | 3051 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 41,046 psi | 66% | 3110 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 39,856 psi | 64% | 3064 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 45,876 psi | 74% | 3219 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 47,224 psi | 76% | 3163 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,746 psi | 75% | 3189 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,952 psi | 82% | 3222 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 43% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,587 psi | 76% | 3176 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,062 psi | 69% | 3189 fps | 96.8% |
| ReloadSwiss RS 60 | 65.3 gr | 80% | 35,027 psi | 56% | 3015 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 40,901 psi | 66% | 3127 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,918 psi | 70% | 3212 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 47,979 psi | 77% | 3163 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,974 psi | 67% | 3045 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 35,476 psi | 57% | 2930 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 45,237 psi | 73% | 3123 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,309 psi | 71% | 3130 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 40,205 psi | 64% | 3022 fps | 98% |
| Shooters World SW4350 | <<locked>> | 94% | 48,834 psi | 78% | 3215 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,463 psi | 58% | 2982 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,614 psi | 73% | 3133 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,685 psi | 70% | 3114 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,440 psi | 73% | 3061 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,840 psi | 61% | 2897 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,401 psi | 82% | 3189 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 51,329 psi | 82% | 3261 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 45,121 psi | 72% | 3061 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,324 psi | 73% | 3133 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 36,245 psi | 58% | 2940 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 32,169 psi | 52% | 2913 fps | 95.8% |
| Unknown powder | <<locked>> | 90% | 44,599 psi | 72% | 3182 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 50,227 psi | 81% | 3127 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,772 psi | 69% | 3005 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,510 psi | 67% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,481 psi | 67% | 3028 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,821 psi | 49% | 2766 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 88% | 42,018 psi | 67% | 3087 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 49,734 psi | 80% | 3232 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 41,249 psi | 66% | 3045 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 42,554 psi | 68% | 3140 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 38,145 psi | 61% | 3081 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 35,099 psi | 56% | 2890 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 50,937 psi | 82% | 3287 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 51,648 psi | 83% | 3333 fps | 95.6% |
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 88 powders for .300 Win. Mag. loaded with the .310 | 123gr | Hornady SST. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,465 fps; across all powders the maximum-charge window runs from 2,123 fps to 3,465 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.31" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, Alliant Reloder-26 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. ReloadSwiss RS 60, Alliant Reloder-17, Hodgdon LEVERevolution rank at the top here: for .300 Win. Mag. with the .310 | 123gr | Hornady SST 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.