Load Specifications
Load data in caliber .25 GT with .257 | 90gr | Barnes BND SPIT-FIRE bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, ReloadSwiss RS 52 and Alliant Power Pro 1200-R.
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 1680 | <<locked>> | 82% | 55,753 psi | 90% | 2936 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 55,013 psi | 89% | 3002 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 52,910 psi | 85% | 3041 fps | 96.8% |
| Accurate 2230 | <<locked>> | 84% | 53,301 psi | 86% | 3045 fps | 97.2% |
| Accurate 2460 | <<locked>> | 90% | 53,954 psi | 87% | 3022 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 54,839 psi | 88% | 3054 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,288 psi | 89% | 3081 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,792 psi | 82% | 3035 fps | 99.9% |
| Accurate LT-30 | <<locked>> | 86% | 53,287 psi | 86% | 2913 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,693 psi | 87% | 2933 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 96% | 54,070 psi | 87% | 3071 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 84% | 54,027 psi | 87% | 2943 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,793 psi | 84% | 3002 fps | 96.7% |
| ADI AR 2219 | <<locked>> | 86% | 52,504 psi | 85% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,780 psi | 87% | 3035 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 96% | 55,782 psi | 90% | 3084 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 55,056 psi | 89% | 3150 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,085 psi | 87% | 3169 fps | 96.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,386 psi | 81% | 3025 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,216 psi | 89% | 3022 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,926 psi | 89% | 3104 fps | 97.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 45,034 psi | 73% | 2995 fps | 96.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,216 psi | 89% | 2959 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,564 psi | 90% | 2956 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,143 psi | 87% | 3081 fps | 96.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,415 psi | 81% | 3038 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,301 psi | 86% | 2979 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,825 psi | 90% | 3120 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,983 psi | 87% | 3150 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 90% | 54,476 psi | 88% | 3058 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 55,956 psi | 90% | 3084 fps | 100% |
| Hodgdon H4198 | <<locked>> | 84% | 55,216 psi | 89% | 2966 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 54,433 psi | 88% | 3084 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,113 psi | 86% | 3114 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,692 psi | 54% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 52,837 psi | 85% | 3035 fps | 98.1% |
| IMR 3031 | <<locked>> | 96% | 53,098 psi | 86% | 3091 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,563 psi | 88% | 3041 fps | 97.5% |
| IMR 4198 | <<locked>> | 90% | 55,985 psi | 90% | 2986 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 52,852 psi | 85% | 3087 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 94% | 53,780 psi | 87% | 3035 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 84% | 54,186 psi | 87% | 3041 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 90% | 54,317 psi | 88% | 3031 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 96% | 52,605 psi | 85% | 3051 fps | 99.7% |
| Lovex S060 | <<locked>> | 96% | 55,230 psi | 89% | 3009 fps | 98% |
| Lovex S062ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 3045 fps | 98.9% |
| Norma 200 | <<locked>> | 86% | 55,738 psi | 90% | 3002 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,011 psi | 86% | 3022 fps | 98.8% |
| Norma 202 | <<locked>> | 96% | 53,214 psi | 86% | 3038 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,940 psi | 87% | 3091 fps | 97.9% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 54,868 psi | 88% | 3117 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,664 psi | 87% | 3064 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,637 psi | 90% | 3038 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,692 psi | 54% | 1886 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,824 psi | 87% | 3031 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 54,172 psi | 87% | 3166 fps | 97.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,124 psi | 78% | 3081 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 94% | 53,983 psi | 87% | 3022 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 98% | 53,200 psi | 86% | 3015 fps | 98.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,630 psi | 75% | 2959 fps | 97.2% |
| Shooters World AR Plus | <<locked>> | 84% | 54,186 psi | 87% | 3041 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 96% | 52,605 psi | 85% | 3051 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 53,577 psi | 86% | 3045 fps | 98.9% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 54,172 psi | 87% | 2995 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,375 psi | 88% | 2684 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,330 psi | 86% | 3038 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,211 psi | 79% | 3028 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 52,953 psi | 85% | 2992 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 56,101 psi | 90% | 3094 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 56,028 psi | 90% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,387 psi | 83% | 2923 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 55,172 psi | 89% | 3077 fps | 99.2% |
| Somchem S335 | <<locked>> | 96% | 54,476 psi | 88% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 55,492 psi | 90% | 3064 fps | 97.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,848 psi | 77% | 2969 fps | 97.2% |
| Vihtavuori N120 | <<locked>> | 84% | 53,882 psi | 87% | 2890 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,666 psi | 90% | 2969 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 55,521 psi | 90% | 2979 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,708 psi | 88% | 3045 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,679 psi | 87% | 3015 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,195 psi | 75% | 2904 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 94% | 54,621 psi | 88% | 3038 fps | 99% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,521 psi | 90% | 3061 fps | 99.9% |
| Winchester 748 | <<locked>> | 94% | 52,953 psi | 85% | 3081 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,782 psi | 90% | 3104 fps | 98.6% |
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 1680 | <<locked>> | 80% | 52,011 psi | 84% | 2881 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,679 psi | 58% | 2657 fps | 99.4% |
| Accurate 2200 | <<locked>> | 80% | 46,195 psi | 75% | 2917 fps | 95.2% |
| Accurate 2230 | <<locked>> | 80% | 46,485 psi | 75% | 2923 fps | 95.8% |
| Accurate 2460 | <<locked>> | 80% | 38,479 psi | 62% | 2740 fps | 97.9% |
| Accurate 2495 | <<locked>> | 80% | 28,036 psi | 45% | 2523 fps | 97.8% |
| Accurate 2520 | <<locked>> | 80% | 33,750 psi | 54% | 2671 fps | 96.1% |
| Accurate 4064 | <<locked>> | 82% | 28,355 psi | 46% | 2546 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 44,338 psi | 72% | 2762 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 80% | 44,701 psi | 72% | 2779 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 42,424 psi | 68% | 2854 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 47,993 psi | 77% | 2854 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 45,832 psi | 74% | 2897 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 42,975 psi | 69% | 2861 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 37,014 psi | 60% | 2707 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 32,764 psi | 53% | 2677 fps | 100% |
| Alliant Power Pro 1200-R | 29 gr | 80% | 39,581 psi | 64% | 2851 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 50,401 psi | 81% | 3100 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 39,131 psi | 63% | 2808 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,611 psi | 66% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 45,223 psi | 73% | 2930 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 41,989 psi | 68% | 2930 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,834 psi | 79% | 2864 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,091 psi | 70% | 2753 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 47,166 psi | 76% | 2956 fps | 95.2% |
| Bofors RP3 | <<locked>> | 92% | 38,508 psi | 62% | 2805 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,898 psi | 60% | 2661 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 84% | 37,028 psi | 60% | 2766 fps | 95.9% |
| Hodgdon CFE223 | 34.7 gr | 88% | 46,847 psi | 76% | 3022 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 39,189 psi | 63% | 2782 fps | 99% |
| Hodgdon H335 | <<locked>> | 80% | 39,711 psi | 64% | 2795 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 80% | 48,776 psi | 79% | 2861 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 86% | 39,726 psi | 64% | 2802 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 38,159 psi | 62% | 2815 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,063 psi | 40% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 41,336 psi | 67% | 2818 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 31,401 psi | 51% | 2654 fps | 97.9% |
| IMR 4064 | <<locked>> | 94% | 45,281 psi | 73% | 2877 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 41,887 psi | 68% | 2759 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 40,901 psi | 66% | 2858 fps | 95% |
| IMR 8208 XBR | <<locked>> | 82% | 37,014 psi | 60% | 2707 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 46,775 psi | 75% | 2917 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 38,377 psi | 62% | 2740 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 82% | 32,648 psi | 53% | 2654 fps | 95.6% |
| Lovex S060 | <<locked>> | 88% | 43,497 psi | 70% | 2799 fps | 95.6% |
| Lovex S062 | <<locked>> | 88% | 36,999 psi | 60% | 2723 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 45,876 psi | 74% | 2851 fps | 100% |
| Norma 201 | <<locked>> | 86% | 38,928 psi | 63% | 2753 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 31,937 psi | 52% | 2605 fps | 96.1% |
| Norma 203B | <<locked>> | 92% | 41,742 psi | 67% | 2864 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 94% | 44,512 psi | 72% | 2930 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 43,569 psi | 70% | 2881 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 43,250 psi | 70% | 2815 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,831 psi | 40% | 1683 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,870 psi | 63% | 2753 fps | 97.2% |
| ReloadSwiss RS 52 | 34.4 gr | 92% | 44,353 psi | 72% | 2982 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 36,796 psi | 59% | 2818 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 35,563 psi | 57% | 2661 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 86% | 36,738 psi | 59% | 2694 fps | 95% |
| Rottweil R 903 | <<locked>> | 94% | 38,421 psi | 62% | 2795 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 46,775 psi | 75% | 2917 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 32,648 psi | 53% | 2654 fps | 95.6% |
| Shooters World Precision | <<locked>> | 88% | 36,999 psi | 60% | 2723 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,133 psi | 66% | 2759 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,921 psi | 79% | 2612 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,323 psi | 70% | 2861 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 43,192 psi | 70% | 2910 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,292 psi | 67% | 2789 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 43,337 psi | 70% | 2867 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,011 psi | 55% | 2575 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,572 psi | 44% | 2425 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 36,927 psi | 60% | 2726 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 33,286 psi | 54% | 2575 fps | 97.5% |
| Somchem S341 | <<locked>> | 88% | 42,221 psi | 68% | 2828 fps | 95% |
| Somchem S355 | <<locked>> | 94% | 39,653 psi | 64% | 2805 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 47,993 psi | 77% | 2805 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,711 psi | 62% | 2684 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 33,895 psi | 55% | 2589 fps | 99% |
| Vihtavuori N135 | <<locked>> | 80% | 28,935 psi | 47% | 2543 fps | 98% |
| Vihtavuori N140 | <<locked>> | 80% | 29,994 psi | 48% | 2536 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 92% | 35,447 psi | 57% | 2684 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 82% | 36,724 psi | 59% | 2697 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 82% | 30,835 psi | 50% | 2569 fps | 95.5% |
| Winchester 748 | <<locked>> | 82% | 35,462 psi | 57% | 2733 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 39,842 psi | 64% | 2815 fps | 95.2% |
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 102 powders for .25 GT loaded with the .257 | 90gr | Barnes BND SPIT-FIRE. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,844 fps to 3,169 fps. Accurate 2495 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.257" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Accurate 4350 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. Hodgdon CFE223, ReloadSwiss RS 52, Alliant Power Pro 1200-R rank at the top here: for .25 GT with the .257 | 90gr | Barnes BND SPIT-FIRE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 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.