Load Specifications
Load data in caliber .270 WSM with .277 | 100gr | Reichenberg HDB Universal bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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.
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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 2495 | <<locked>> | 82% | 57,638 psi | 90% | 3320 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,724 psi | 89% | 3333 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 3383 fps | 98.3% |
| Accurate 4064 | <<locked>> | 84% | 57,740 psi | 90% | 3376 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,217 psi | 90% | 3458 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 86% | 55,521 psi | 87% | 3369 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 98% | 56,869 psi | 89% | 3465 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,346 psi | 85% | 3497 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,768 psi | 89% | 3406 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,087 psi | 89% | 3432 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,391 psi | 88% | 3501 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,259 psi | 85% | 3474 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,318 psi | 88% | 3451 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 3402 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,150 psi | 71% | 3287 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,723 psi | 86% | 3540 fps | 99.4% |
| Bofors RP3 | <<locked>> | 84% | 54,882 psi | 86% | 3376 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 57,159 psi | 90% | 3389 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 84% | 54,781 psi | 86% | 3376 fps | 99% |
| Hodgdon H414 | <<locked>> | 90% | 54,955 psi | 86% | 3432 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,491 psi | 85% | 3379 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,014 psi | 89% | 3422 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,201 psi | 87% | 3419 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,013 psi | 86% | 3458 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 2195 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,898 psi | 88% | 3383 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,027 psi | 86% | 3353 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,595 psi | 90% | 3379 fps | 97.8% |
| IMR 4350 | <<locked>> | 94% | 57,537 psi | 90% | 3412 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,766 psi | 86% | 3350 fps | 97.2% |
| IMR 4831 | <<locked>> | 94% | 57,145 psi | 90% | 3438 fps | 99.6% |
| IMR 4895 | <<locked>> | 82% | 55,042 psi | 86% | 3406 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 56,492 psi | 89% | 3343 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 56,086 psi | 88% | 3363 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,709 psi | 87% | 3363 fps | 98.5% |
| Lovex S070 | <<locked>> | 92% | 56,884 psi | 89% | 3402 fps | 97.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,789 psi | 73% | 3215 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 57,464 psi | 90% | 3383 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,595 psi | 90% | 3373 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,405 psi | 88% | 3419 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 57,174 psi | 90% | 3550 fps | 97.8% |
| Norma URP | <<locked>> | 92% | 55,056 psi | 86% | 3425 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 84% | 56,768 psi | 89% | 3432 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 57,435 psi | 90% | 3481 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,318 psi | 58% | 2241 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,447 psi | 85% | 3343 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,580 psi | 90% | 3501 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,377 psi | 90% | 3537 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,507 psi | 89% | 3468 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,592 psi | 86% | 3484 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 54,911 psi | 86% | 3327 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,940 psi | 86% | 3369 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 55,854 psi | 88% | 3442 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 90% | 57,159 psi | 90% | 3389 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,709 psi | 87% | 3363 fps | 98.5% |
| Shooters World Precision | <<locked>> | 84% | 56,086 psi | 88% | 3363 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,884 psi | 89% | 3402 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,332 psi | 87% | 3415 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,391 psi | 88% | 3392 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,638 psi | 90% | 3301 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,998 psi | 86% | 3245 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,448 psi | 87% | 3301 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,347 psi | 87% | 3435 fps | 95.9% |
| Somchem S335 | <<locked>> | 82% | 57,595 psi | 90% | 3297 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,534 psi | 85% | 3356 fps | 99.9% |
| Somchem S365 | <<locked>> | 94% | 54,360 psi | 85% | 3442 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,145 psi | 90% | 3425 fps | 97.2% |
| Vihtavuori N135 | <<locked>> | 82% | 54,926 psi | 86% | 3291 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,607 psi | 86% | 3291 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,695 psi | 87% | 3330 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,101 psi | 89% | 3419 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 84% | 56,492 psi | 89% | 3337 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,608 psi | 89% | 3428 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,421 psi | 90% | 3497 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,695 psi | 89% | 3379 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,955 psi | 86% | 3432 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,007 psi | 74% | 3451 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,811 psi | 89% | 3406 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3402 fps | 96% |
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 2495 | <<locked>> | 80% | 54,534 psi | 85% | 3271 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,140 psi | 79% | 3212 fps | 95.4% |
| Accurate 3100 | <<locked>> | 92% | 43,265 psi | 68% | 3140 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 51,503 psi | 81% | 3271 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,465 psi | 62% | 3087 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,601 psi | 73% | 3192 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 53,708 psi | 84% | 3402 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,894 psi | 80% | 3425 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,645 psi | 75% | 3238 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,589 psi | 79% | 3307 fps | 99.2% |
| Alliant Reloder-16 | 54.3 gr | 80% | 37,391 psi | 59% | 3068 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,076 psi | 66% | 3219 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,997 psi | 83% | 3389 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 32,227 psi | 51% | 2923 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 40,408 psi | 63% | 3163 fps | 95% |
| Alliant Reloder-26 | 65.9 gr | 88% | 39,247 psi | 62% | 3186 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,646 psi | 76% | 3258 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 48,008 psi | 75% | 3205 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 48,573 psi | 76% | 3251 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 45,629 psi | 72% | 3235 fps | 95% |
| Hodgdon H4350 | <<locked>> | 86% | 51,343 psi | 80% | 3317 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,346 psi | 55% | 2963 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,996 psi | 81% | 3360 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 48,037 psi | 75% | 3314 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 43% | 1969 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,649 psi | 83% | 3323 fps | 99.8% |
| IMR 4064 | <<locked>> | 80% | 49,008 psi | 77% | 3235 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,111 psi | 80% | 3255 fps | 96.5% |
| IMR 4350 | <<locked>> | 88% | 48,138 psi | 75% | 3228 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 46,108 psi | 72% | 3173 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 37,521 psi | 59% | 3018 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 51,895 psi | 81% | 3346 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 53,417 psi | 84% | 3287 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 50,009 psi | 78% | 3251 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 41,959 psi | 66% | 3074 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 45,136 psi | 71% | 3163 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 41,756 psi | 65% | 3107 fps | 95% |
| Norma 201 | <<locked>> | 80% | 54,433 psi | 85% | 3327 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,447 psi | 85% | 3323 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,082 psi | 78% | 3297 fps | 99.4% |
| Norma MRP | <<locked>> | 94% | 47,210 psi | 74% | 3343 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,435 psi | 60% | 3064 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 49,922 psi | 78% | 3307 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 42,105 psi | 66% | 3159 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 44% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,182 psi | 76% | 3219 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,041 psi | 85% | 3442 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,338 psi | 69% | 3287 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,406 psi | 60% | 3081 fps | 95.4% |
| ReloadSwiss RS 70 | 60.9 gr | 82% | 39,726 psi | 62% | 3140 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,953 psi | 81% | 3271 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,977 psi | 72% | 3196 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 52,446 psi | 82% | 3376 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 48,008 psi | 75% | 3205 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,959 psi | 66% | 3074 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 50,009 psi | 78% | 3251 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 45,136 psi | 71% | 3163 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,050 psi | 72% | 3232 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,142 psi | 83% | 3333 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,230 psi | 85% | 3245 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,151 psi | 72% | 3091 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 46,340 psi | 73% | 3120 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,953 psi | 81% | 3369 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 54,592 psi | 86% | 3248 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,021 psi | 72% | 3192 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 35,201 psi | 55% | 3022 fps | 98.1% |
| Somchem S385 | <<locked>> | 94% | 50,444 psi | 79% | 3297 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 51,619 psi | 81% | 3235 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,692 psi | 81% | 3241 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,888 psi | 69% | 3110 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 39,697 psi | 62% | 3061 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 50,241 psi | 79% | 3232 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,494 psi | 62% | 3064 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 35,549 psi | 56% | 3022 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,856 psi | 61% | 3018 fps | 98.2% |
| Winchester 760 | <<locked>> | 84% | 45,629 psi | 72% | 3235 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 30,937 psi | 48% | 2956 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,287 psi | 84% | 3343 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,200 psi | 83% | 3337 fps | 95.1% |
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 99 powders for .270 WSM loaded with the .277 | 100gr | Reichenberg HDB Universal. Norma MRP delivers the highest muzzle velocity at 3,550 fps; across all powders the maximum-charge window runs from 2,195 fps to 3,550 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.277" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 100gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2213 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.