Load Specifications
Load data in caliber .25 GT with .257 | 72gr | Reichenberg Spezial Jagd bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Hodgdon H335 and SNPE Vectan SP 10.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 54,926 psi | 89% | 3235 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 3337 fps | 100% |
| Accurate 2460 | <<locked>> | 96% | 54,940 psi | 89% | 3340 fps | 98.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 43,743 psi | 71% | 3186 fps | 99.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 55,782 psi | 90% | 3396 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,611 psi | 66% | 3140 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 92% | 55,463 psi | 89% | 3248 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 92% | 55,941 psi | 90% | 3264 fps | 98.6% |
| ADI AR 2207 | <<locked>> | 90% | 55,477 psi | 89% | 3304 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 54,085 psi | 87% | 3366 fps | 99.5% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 54,853 psi | 88% | 3343 fps | 96.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,750 psi | 83% | 3363 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 55,521 psi | 90% | 3468 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 94% | 52,721 psi | 85% | 3310 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,505 psi | 86% | 3258 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 54,404 psi | 88% | 3235 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 98% | 54,940 psi | 89% | 3297 fps | 97.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 52,924 psi | 85% | 3369 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 96% | 55,550 psi | 90% | 3389 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 94% | 53,751 psi | 87% | 3356 fps | 98.9% |
| Hodgdon H4198 | <<locked>> | 88% | 54,128 psi | 87% | 3255 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,387 psi | 52% | 2037 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,240 psi | 79% | 3346 fps | 99.5% |
| IMR 4198 | <<locked>> | 94% | 53,809 psi | 87% | 3284 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,708 psi | 87% | 3212 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 54,853 psi | 88% | 3343 fps | 96.9% |
| Lovex D073.4 | <<locked>> | 90% | 55,521 psi | 90% | 3366 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 96% | 55,274 psi | 89% | 3343 fps | 97.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 48,994 psi | 79% | 3291 fps | 97.6% |
| Lovex S053 | <<locked>> | 86% | 55,477 psi | 89% | 3199 fps | 100% |
| Norma 200 | <<locked>> | 90% | 53,098 psi | 86% | 3294 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,154 psi | 81% | 3261 fps | 96% |
| Norma 202ᴾ | <<locked>> | 100% | 50,038 psi | 81% | 3287 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,184 psi | 52% | 2083 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 54,070 psi | 87% | 3251 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 55,521 psi | 90% | 3360 fps | 98.3% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 54,418 psi | 88% | 3333 fps | 98.7% |
| Shooters World AR Plus | <<locked>> | 90% | 55,521 psi | 90% | 3366 fps | 98.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 48,994 psi | 79% | 3291 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 52,779 psi | 85% | 3255 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,374 psi | 86% | 2992 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 54,694 psi | 88% | 3366 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,882 psi | 87% | 3327 fps | 99.8% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 54,012 psi | 87% | 3251 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,279 psi | 70% | 3068 fps | 97.9% |
| Somchem S321 | <<locked>> | 96% | 52,895 psi | 85% | 3330 fps | 96.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 51,895 psi | 84% | 3238 fps | 99.1% |
| Vihtavuori N120 | <<locked>> | 90% | 55,448 psi | 89% | 3245 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 53,548 psi | 86% | 3251 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,055 psi | 86% | 3251 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,962 psi | 73% | 3202 fps | 99.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,398 psi | 76% | 3205 fps | 98.2% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 55,912 psi | 90% | 3353 fps | 97.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 3192 fps | 97.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 53,664 psi | 87% | 3389 fps | 97.6% |
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% | 44,918 psi | 72% | 3061 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 29,486 psi | 48% | 2766 fps | 95.3% |
| Accurate 2460 | <<locked>> | 86% | 38,943 psi | 63% | 3028 fps | 95.4% |
| Accurate 2495 | <<locked>> | 88% | 29,138 psi | 47% | 2831 fps | 95.8% |
| Accurate 2520 | <<locked>> | 90% | 39,131 psi | 63% | 3074 fps | 95% |
| Accurate 4064 | <<locked>> | 96% | 35,665 psi | 58% | 3018 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 38,319 psi | 62% | 2913 fps | 96.9% |
| Accurate LT-32 | <<locked>> | 82% | 41,133 psi | 66% | 2976 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 40,567 psi | 65% | 3041 fps | 100% |
| ADI AR 2219 | 29.9 gr | 80% | 35,810 psi | 58% | 2982 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 96% | 48,530 psi | 78% | 3228 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 27,006 psi | 44% | 2772 fps | 97% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 52,098 psi | 84% | 3406 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,939 psi | 55% | 2917 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,756 psi | 67% | 3038 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,811 psi | 59% | 2890 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 45,542 psi | 73% | 3120 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 96% | 45,701 psi | 74% | 3235 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 82% | 35,172 psi | 57% | 2966 fps | 95.6% |
| Hodgdon H335 | 32.5 gr | 84% | 38,029 psi | 61% | 3031 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 42,221 psi | 68% | 3022 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,975 psi | 39% | 1831 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 33,475 psi | 54% | 2979 fps | 95.9% |
| IMR 4198 | <<locked>> | 80% | 35,708 psi | 58% | 2920 fps | 99.2% |
| IMR 4227 | <<locked>> | 80% | 47,645 psi | 77% | 3110 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 48,530 psi | 78% | 3228 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 82% | 41,684 psi | 67% | 3100 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 90% | 44,846 psi | 72% | 3153 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 94% | 39,871 psi | 64% | 3100 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 46,833 psi | 76% | 3061 fps | 100% |
| Norma 200 | <<locked>> | 80% | 38,754 psi | 63% | 3015 fps | 99.5% |
| Norma 201 | <<locked>> | 98% | 47,108 psi | 76% | 3202 fps | 95.2% |
| Norma 202 | <<locked>> | 92% | 38,870 psi | 63% | 3054 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,931 psi | 39% | 1873 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,747 psi | 77% | 3143 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 42,612 psi | 69% | 3114 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 88% | 38,043 psi | 61% | 2995 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 82% | 41,684 psi | 67% | 3100 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 94% | 39,871 psi | 64% | 3100 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 49,095 psi | 79% | 3189 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,076 psi | 69% | 2831 fps | 100% |
| SNPE Vectan SP 10 | 31.7 gr | 82% | 38,856 psi | 63% | 3045 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,519 psi | 56% | 2920 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 39,189 psi | 63% | 2963 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,576 psi | 54% | 2841 fps | 95% |
| Somchem S321 | <<locked>> | 92% | 46,311 psi | 75% | 3205 fps | 95.3% |
| Somchem S335 | <<locked>> | 86% | 33,866 psi | 55% | 2854 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 40,683 psi | 66% | 2999 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,721 psi | 53% | 2822 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 82% | 30,284 psi | 49% | 2759 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 86% | 28,674 psi | 46% | 2799 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 92% | 36,854 psi | 59% | 2979 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 96% | 49,124 psi | 79% | 3232 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 94% | 37,869 psi | 61% | 3012 fps | 95.2% |
| Winchester 748 | <<locked>> | 94% | 43,729 psi | 71% | 3192 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 55 powders for .25 GT loaded with the .257 | 72gr | Reichenberg Spezial Jagd. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,468 fps; across all powders the maximum-charge window runs from 2,037 fps to 3,468 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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. ADI AR 2219, Hodgdon H335, SNPE Vectan SP 10 rank at the top here: for .25 GT with the .257 | 72gr | Reichenberg Spezial Jagd 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.