Load Specifications
Load data in caliber .300 Win. Mag. with .311 | 123gr | Sellier & Bellot FMJ bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-17.
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% | 55,448 psi | 89% | 3248 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,476 psi | 87% | 3268 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,173 psi | 90% | 3337 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 54,447 psi | 87% | 3314 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,723 psi | 88% | 3389 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 54,708 psi | 88% | 3343 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 92% | 55,898 psi | 90% | 3340 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 53,751 psi | 86% | 3294 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 84% | 54,346 psi | 87% | 3281 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,708 psi | 88% | 3468 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,898 psi | 90% | 3366 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,405 psi | 90% | 3389 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,753 psi | 89% | 3455 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,388 psi | 86% | 3432 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,929 psi | 64% | 3123 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,179 psi | 72% | 3304 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,737 psi | 88% | 3353 fps | 98.8% |
| Bofors RP3 | <<locked>> | 90% | 53,084 psi | 85% | 3323 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,405 psi | 89% | 3281 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,171 psi | 85% | 3317 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,100 psi | 88% | 3428 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 90% | 54,172 psi | 87% | 3333 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 96% | 53,954 psi | 87% | 3376 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 55,274 psi | 89% | 3360 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,011 psi | 83% | 3314 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,868 psi | 88% | 3386 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,404 psi | 57% | 2126 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,055 psi | 85% | 3301 fps | 99.5% |
| IMR 3031 | <<locked>> | 86% | 55,274 psi | 89% | 3353 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,347 psi | 89% | 3327 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,405 psi | 89% | 3297 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,259 psi | 89% | 3320 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,172 psi | 88% | 3376 fps | 98.8% |
| IMR 4895 | <<locked>> | 88% | 54,404 psi | 87% | 3369 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 84% | 53,751 psi | 86% | 3294 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 86% | 54,723 psi | 88% | 3323 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,186 psi | 87% | 3268 fps | 99.4% |
| Lovex S062 | <<locked>> | 90% | 55,056 psi | 88% | 3323 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 54,621 psi | 88% | 3307 fps | 97.5% |
| Lovex S070 | <<locked>> | 98% | 55,550 psi | 89% | 3343 fps | 96.7% |
| Norma 201 | <<locked>> | 86% | 53,563 psi | 86% | 3287 fps | 99.8% |
| Norma 202 | <<locked>> | 86% | 53,954 psi | 87% | 3294 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,651 psi | 89% | 3376 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 53,548 psi | 86% | 3369 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 88% | 52,939 psi | 85% | 3337 fps | 99.2% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,333 psi | 90% | 3425 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 54,143 psi | 87% | 3301 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,606 psi | 86% | 3320 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,549 psi | 87% | 3287 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,853 psi | 57% | 2172 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,491 psi | 87% | 3307 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 53,243 psi | 85% | 3399 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,127 psi | 85% | 3438 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,491 psi | 87% | 3406 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,259 psi | 87% | 3435 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 54,389 psi | 87% | 3278 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,969 psi | 87% | 3284 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 92% | 52,953 psi | 85% | 3310 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,621 psi | 88% | 3307 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,723 psi | 88% | 3323 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,056 psi | 88% | 3323 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 55,550 psi | 89% | 3343 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,781 psi | 88% | 3376 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,318 psi | 90% | 3340 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,243 psi | 85% | 3304 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,911 psi | 88% | 3232 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,303 psi | 89% | 3225 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,085 psi | 88% | 3255 fps | 96.3% |
| Somchem S321 | <<locked>> | 82% | 55,071 psi | 88% | 3327 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,433 psi | 87% | 3225 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,811 psi | 89% | 3330 fps | 99.5% |
| Somchem S355 | <<locked>> | 92% | 53,272 psi | 85% | 3310 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,605 psi | 83% | 3376 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 54,418 psi | 87% | 3196 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,143 psi | 88% | 3219 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 53,766 psi | 86% | 3258 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,534 psi | 87% | 3268 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,940 psi | 88% | 3294 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,260 psi | 90% | 3376 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 84% | 54,201 psi | 87% | 3294 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 88% | 52,997 psi | 85% | 3258 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,274 psi | 89% | 3373 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,888 psi | 70% | 3219 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,084 psi | 85% | 3284 fps | 99.7% |
| Winchester 748 | <<locked>> | 84% | 54,143 psi | 87% | 3343 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 53,954 psi | 87% | 3376 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,243 psi | 85% | 3314 fps | 99.6% |
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% | 48,834 psi | 78% | 3140 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,742 psi | 67% | 3041 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,878 psi | 78% | 3212 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 39,450 psi | 63% | 3025 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 41,075 psi | 66% | 3114 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 45,049 psi | 72% | 3153 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,319 psi | 61% | 2972 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,123 psi | 76% | 3169 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 47,529 psi | 76% | 3169 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,176 psi | 66% | 3166 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,985 psi | 61% | 2995 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,770 psi | 65% | 3068 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 40,538 psi | 65% | 3123 fps | 95.6% |
| Alliant Reloder-17 | 67 gr | 82% | 35,259 psi | 57% | 3005 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 35,244 psi | 57% | 2995 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 41,959 psi | 67% | 3225 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,570 psi | 71% | 3150 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 37,753 psi | 61% | 2995 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,907 psi | 78% | 3163 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,296 psi | 74% | 3189 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,285 psi | 82% | 3356 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 41,307 psi | 66% | 3064 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 50,401 psi | 81% | 3307 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 45,498 psi | 73% | 3169 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,983 psi | 56% | 2933 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,655 psi | 67% | 3123 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,627 psi | 70% | 3110 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 45,136 psi | 72% | 3173 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,219 psi | 64% | 3015 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,909 psi | 83% | 3232 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,764 psi | 83% | 3251 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 39,566 psi | 63% | 3058 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 41,785 psi | 67% | 3107 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 47,123 psi | 76% | 3169 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 44,382 psi | 71% | 3130 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 45,150 psi | 72% | 3091 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 40,292 psi | 65% | 3022 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 45,295 psi | 73% | 3123 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 49,081 psi | 79% | 3219 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 44,222 psi | 71% | 3104 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 44,469 psi | 71% | 3117 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 40,161 psi | 64% | 3054 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 41,104 psi | 66% | 3110 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 39,914 psi | 64% | 3064 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 94% | 45,905 psi | 74% | 3222 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 47,268 psi | 76% | 3163 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,862 psi | 75% | 3192 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,010 psi | 82% | 3222 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,571 psi | 43% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,630 psi | 76% | 3176 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,149 psi | 69% | 3189 fps | 96.8% |
| ReloadSwiss RS 60 | 65.4 gr | 80% | 35,070 psi | 56% | 3018 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,002 psi | 66% | 3130 fps | 95.2% |
| ReloadSwiss RS 70 | 76.4 gr | 92% | 43,932 psi | 70% | 3212 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 48,066 psi | 77% | 3163 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,047 psi | 67% | 3045 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 35,549 psi | 57% | 2930 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 90% | 45,295 psi | 73% | 3123 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,382 psi | 71% | 3130 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 40,292 psi | 65% | 3022 fps | 98% |
| Shooters World SW4350 | <<locked>> | 94% | 49,081 psi | 79% | 3219 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,521 psi | 59% | 2986 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,672 psi | 73% | 3136 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,743 psi | 70% | 3117 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,513 psi | 73% | 3064 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,913 psi | 61% | 2900 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,459 psi | 83% | 3192 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 51,387 psi | 82% | 3261 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 45,194 psi | 72% | 3061 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,382 psi | 73% | 3133 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 36,318 psi | 58% | 2943 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 32,213 psi | 52% | 2917 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 51,343 psi | 82% | 3146 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,847 psi | 74% | 3061 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,539 psi | 67% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,221 psi | 68% | 3041 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 34,592 psi | 55% | 2871 fps | 97% |
| Vihtavuori N160 | <<locked>> | 88% | 40,248 psi | 65% | 3054 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 47,326 psi | 76% | 3166 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 40,756 psi | 65% | 3022 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 42,482 psi | 68% | 3117 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 38,392 psi | 62% | 3087 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 35,157 psi | 56% | 2894 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 47,268 psi | 76% | 3219 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 50,401 psi | 81% | 3307 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,236 psi | 69% | 3117 fps | 98.1% |
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 87 powders for .300 Win. Mag. loaded with the .311 | 123gr | Sellier & Bellot FMJ. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,468 fps; across all powders the maximum-charge window runs from 2,126 fps to 3,468 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 87 of the 87 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. 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, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .311 | 123gr | Sellier & Bellot FMJ 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.