Load Specifications
Bullet:.257 | 80gr | Barnes TTSX BT
Bullet Manufacturer:Barnes
Bullet Weight:80 gr
Bullet Diameter:0.257"
Bullet Length:<<locked>>
Caliber:.25-06 Rem. load data
Case Length (l3):2.489"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65.8 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,267 psi
Recommended Twist Rate:1:10.5
Load data in caliber .25-06 Rem. with .257 | 80gr | Barnes TTSX BT bullet and 99 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 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.
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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 2015 | <<locked>> | 86% | 57,290 psi | 88% | 3353 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,724 psi | 85% | 3369 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,825 psi | 86% | 3360 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 58,581 psi | 90% | 3445 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 55,956 psi | 86% | 3409 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,058 psi | 87% | 3491 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 88% | 56,855 psi | 87% | 3451 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 58,131 psi | 89% | 3448 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,854 psi | 86% | 3402 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 56,362 psi | 86% | 3386 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,246 psi | 88% | 3527 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,319 psi | 88% | 3583 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 58,175 psi | 89% | 3474 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,666 psi | 87% | 3366 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 58,639 psi | 90% | 3497 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,331 psi | 83% | 3494 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,144 psi | 86% | 3543 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,711 psi | 59% | 3150 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,203 psi | 88% | 3458 fps | 99% |
| Bofors RP3 | <<locked>> | 94% | 59,059 psi | 90% | 3488 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 58,929 psi | 90% | 3442 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,276 psi | 88% | 3386 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,463 psi | 85% | 3425 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,682 psi | 88% | 3540 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 82% | 56,202 psi | 86% | 3409 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,769 psi | 89% | 3432 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,173 psi | 86% | 3435 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 98% | 56,304 psi | 86% | 3481 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 57,421 psi | 88% | 3468 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,314 psi | 77% | 3343 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,217 psi | 88% | 3497 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 57,841 psi | 89% | 3524 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,070 psi | 54% | 2195 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 58,827 psi | 90% | 3471 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 57,072 psi | 87% | 3458 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,392 psi | 88% | 3432 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,653 psi | 88% | 3402 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 56,376 psi | 86% | 3327 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,464 psi | 88% | 3422 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,606 psi | 82% | 3412 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 56,405 psi | 86% | 3474 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 55,854 psi | 86% | 3402 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 55,985 psi | 86% | 3383 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,739 psi | 87% | 3425 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,420 psi | 86% | 3376 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 57,000 psi | 87% | 3422 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 56,753 psi | 87% | 3409 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 3448 fps | 97% |
| Norma 201 | <<locked>> | 90% | 58,885 psi | 90% | 3451 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,985 psi | 86% | 3399 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,812 psi | 89% | 3481 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 55,941 psi | 86% | 3474 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 90% | 55,274 psi | 85% | 3445 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,998 psi | 84% | 3461 fps | 97.2% |
| Ramshot TAC | <<locked>> | 86% | 56,434 psi | 86% | 3409 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,854 psi | 86% | 3428 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,869 psi | 87% | 3396 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 54% | 2241 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 58,943 psi | 90% | 3445 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,811 psi | 87% | 3415 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,550 psi | 85% | 3510 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,651 psi | 85% | 3550 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,913 psi | 87% | 3507 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,927 psi | 87% | 3543 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 86% | 55,825 psi | 86% | 3383 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,753 psi | 85% | 3386 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 58,871 psi | 90% | 3478 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 58,929 psi | 90% | 3442 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,753 psi | 87% | 3409 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,739 psi | 87% | 3425 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,000 psi | 87% | 3422 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 3448 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 58,523 psi | 90% | 3409 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,101 psi | 87% | 3481 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,769 psi | 89% | 3399 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 58,958 psi | 90% | 3448 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,477 psi | 85% | 3415 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,826 psi | 87% | 3337 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,522 psi | 88% | 3327 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,522 psi | 88% | 3356 fps | 96.6% |
| Somchem S321 | <<locked>> | 84% | 57,290 psi | 88% | 3432 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,159 psi | 86% | 3327 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 58,349 psi | 89% | 3438 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 59,001 psi | 90% | 3474 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,227 psi | 77% | 3412 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 56,333 psi | 86% | 3301 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,029 psi | 87% | 3320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 59,045 psi | 90% | 3409 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,869 psi | 87% | 3376 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,217 psi | 88% | 3396 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3478 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 56,376 psi | 86% | 3402 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 58,726 psi | 90% | 3415 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,841 psi | 89% | 3478 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,293 psi | 65% | 3241 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,695 psi | 85% | 3386 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 56,449 psi | 86% | 3451 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,304 psi | 86% | 3481 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,303 psi | 85% | 3419 fps | 99.7% |
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% | 47,123 psi | 72% | 3186 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,141 psi | 80% | 3310 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,566 psi | 61% | 3071 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,297 psi | 72% | 3251 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 37,376 psi | 57% | 3045 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 42,366 psi | 65% | 3205 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 43,526 psi | 67% | 3189 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 39,479 psi | 60% | 3071 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,672 psi | 70% | 3209 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 45,847 psi | 70% | 3219 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,476 psi | 82% | 3461 fps | 99.4% |
| Alliant Power Pro 2000-MR | 47.4 gr | 80% | 39,711 psi | 61% | 3196 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,448 psi | 56% | 3028 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,026 psi | 81% | 3310 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,233 psi | 60% | 3100 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,916 psi | 64% | 3225 fps | 95.9% |
| Alliant Reloder-17 | 49 gr | 84% | 36,318 psi | 56% | 3100 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 36,245 psi | 56% | 3081 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,120 psi | 66% | 3182 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 35,998 psi | 55% | 3022 fps | 96.2% |
| Bofors RP7 | <<locked>> | 96% | 55,506 psi | 85% | 3383 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,616 psi | 73% | 3212 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,657 psi | 68% | 3222 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,487 psi | 76% | 3389 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 52,547 psi | 81% | 3346 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,824 psi | 82% | 3366 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 42,656 psi | 65% | 3166 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 96% | 52,301 psi | 80% | 3409 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 43,961 psi | 67% | 3205 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 36,042 psi | 55% | 3025 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,103 psi | 61% | 3156 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 96% | 53,374 psi | 82% | 3442 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 40% | 1969 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,366 psi | 65% | 3153 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 43,395 psi | 66% | 3215 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,754 psi | 59% | 3048 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,070 psi | 83% | 3340 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 53,055 psi | 81% | 3274 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,911 psi | 83% | 3360 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 40,727 psi | 62% | 3146 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 40,205 psi | 62% | 3136 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 45,672 psi | 70% | 3209 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 52,054 psi | 80% | 3317 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 42,670 psi | 65% | 3166 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 43,642 psi | 67% | 3130 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 38,551 psi | 59% | 3054 fps | 97.4% |
| Lovex S065 | <<locked>> | 92% | 46,702 psi | 72% | 3219 fps | 95.5% |
| Lovex S070 | <<locked>> | 96% | 50,807 psi | 78% | 3317 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 42,612 psi | 65% | 3143 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 42,931 psi | 66% | 3156 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 38,580 psi | 59% | 3087 fps | 96% |
| Norma URP | <<locked>> | 92% | 42,540 psi | 65% | 3209 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 38,377 psi | 59% | 3094 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 96% | 47,863 psi | 73% | 3323 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,905 psi | 70% | 3202 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,469 psi | 70% | 3228 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,574 psi | 76% | 3264 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,136 psi | 40% | 2014 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,445 psi | 79% | 3320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,632 psi | 76% | 3281 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,437 psi | 63% | 3222 fps | 96.1% |
| ReloadSwiss RS 60 | 46.7 gr | 80% | 33,678 psi | 52% | 3038 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,540 psi | 65% | 3228 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 45,672 psi | 70% | 3314 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 46,166 psi | 71% | 3205 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 40,263 psi | 62% | 3077 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 36,085 psi | 55% | 3015 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 96% | 55,506 psi | 85% | 3383 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 46,702 psi | 72% | 3219 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,670 psi | 65% | 3166 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 38,551 psi | 59% | 3054 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 96% | 50,807 psi | 78% | 3317 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 54,462 psi | 83% | 3340 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 37,565 psi | 58% | 3077 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,983 psi | 83% | 3337 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,135 psi | 68% | 3169 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,337 psi | 65% | 3153 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,903 psi | 67% | 3107 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,419 psi | 56% | 2936 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,708 psi | 82% | 3294 fps | 95.8% |
| Somchem S321 | <<locked>> | 80% | 49,734 psi | 76% | 3301 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 43,685 psi | 67% | 3107 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,859 psi | 67% | 3169 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 34,766 psi | 53% | 2966 fps | 95.1% |
| Somchem S365 | <<locked>> | 88% | 32,837 psi | 50% | 2999 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 49,690 psi | 76% | 3196 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,266 psi | 68% | 3107 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,726 psi | 61% | 3074 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,524 psi | 62% | 3074 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 32,953 psi | 50% | 2894 fps | 96.1% |
| Vihtavuori N160 | <<locked>> | 90% | 41,495 psi | 64% | 3146 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 45,832 psi | 70% | 3205 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 39,291 psi | 60% | 3054 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 90% | 40,959 psi | 63% | 3143 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 39,392 psi | 60% | 3173 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,953 psi | 52% | 2917 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 45,585 psi | 70% | 3255 fps | 99.4% |
| Winchester 760 | <<locked>> | 96% | 52,634 psi | 81% | 3415 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,930 psi | 64% | 3153 fps | 97.6% |
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 99 powders for .25-06 Rem. loaded with the .257 | 80gr | Barnes TTSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,583 fps; across all powders the maximum-charge window runs from 2,195 fps to 3,583 fps. Accurate 4350 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 (450 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.257" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Reloder-17 rank at the top here: for .25-06 Rem. with the .257 | 80gr | Barnes TTSX BT 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.