Load Specifications
Load data in caliber .25 GT with .257 | 91gr | Peregrine VLR5 (VLR-5) bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and ReloadSwiss RS 52.
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% | 53,447 psi | 86% | 2877 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 55,898 psi | 90% | 2992 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 53,882 psi | 87% | 3031 fps | 96.8% |
| Accurate 2230 | <<locked>> | 86% | 54,317 psi | 88% | 3038 fps | 97.3% |
| Accurate 2460 | <<locked>> | 92% | 54,389 psi | 88% | 3009 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 51,198 psi | 83% | 2986 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 55,477 psi | 89% | 3061 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 47,471 psi | 77% | 2959 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 88% | 54,375 psi | 88% | 2907 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 54,853 psi | 88% | 2923 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 98% | 54,868 psi | 88% | 3058 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 86% | 55,027 psi | 89% | 2936 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 49,487 psi | 80% | 2936 fps | 96% |
| ADI AR 2219 | <<locked>> | 88% | 53,548 psi | 86% | 3018 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 54,578 psi | 88% | 3022 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 96% | 52,591 psi | 85% | 3022 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 55,477 psi | 89% | 3133 fps | 98.6% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 55,056 psi | 89% | 3156 fps | 96.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 47,268 psi | 76% | 2949 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 92% | 55,970 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 51,895 psi | 84% | 3028 fps | 96.9% |
| Alliant Reloder-7 | <<locked>> | 86% | 55,941 psi | 90% | 2949 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,330 psi | 86% | 2900 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 54,868 psi | 88% | 3064 fps | 96.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 2959 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 94% | 53,969 psi | 87% | 2966 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 96% | 52,750 psi | 85% | 3048 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 94% | 54,998 psi | 89% | 3140 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 92% | 55,579 psi | 90% | 3048 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 53,345 psi | 86% | 3022 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 84% | 52,808 psi | 85% | 2904 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 55,230 psi | 89% | 3071 fps | 98.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 53,679 psi | 87% | 3094 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,344 psi | 54% | 1818 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 53,824 psi | 87% | 3025 fps | 98.1% |
| IMR 3031 | <<locked>> | 98% | 53,621 psi | 86% | 3077 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 52,054 psi | 84% | 2976 fps | 96.9% |
| IMR 4198 | <<locked>> | 90% | 53,882 psi | 87% | 2933 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 56,057 psi | 90% | 2890 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 53,113 psi | 86% | 3068 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 96% | 54,578 psi | 88% | 3022 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 86% | 54,998 psi | 89% | 3028 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 92% | 54,868 psi | 88% | 3018 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 98% | 53,272 psi | 86% | 3038 fps | 99.7% |
| Lovex S053 | <<locked>> | 82% | 54,766 psi | 88% | 2835 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 52,750 psi | 85% | 2943 fps | 97.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,850 psi | 82% | 2976 fps | 98.4% |
| Norma 200 | <<locked>> | 86% | 52,620 psi | 85% | 2936 fps | 100% |
| Norma 201 | <<locked>> | 98% | 53,476 psi | 86% | 3005 fps | 98.7% |
| Norma 202 | <<locked>> | 98% | 53,838 psi | 87% | 3025 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 50,879 psi | 82% | 3015 fps | 97.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 51,808 psi | 84% | 3041 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 96% | 54,186 psi | 87% | 3048 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,287 psi | 86% | 2972 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,243 psi | 54% | 1857 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 55,071 psi | 89% | 3028 fps | 99.6% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 55,245 psi | 89% | 3156 fps | 97.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,324 psi | 73% | 2995 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 96% | 53,925 psi | 87% | 2999 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 53,693 psi | 87% | 2999 fps | 98.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,453 psi | 70% | 2881 fps | 96.3% |
| Shooters World AR Plus | <<locked>> | 86% | 54,998 psi | 89% | 3028 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 98% | 53,272 psi | 86% | 3038 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,850 psi | 82% | 2976 fps | 98.4% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 55,608 psi | 90% | 2992 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 54,882 psi | 89% | 2667 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 53,954 psi | 87% | 3025 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 46,615 psi | 75% | 2956 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 53,737 psi | 87% | 2979 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 53,272 psi | 86% | 3025 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 53,200 psi | 86% | 2920 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,892 psi | 79% | 2861 fps | 99.9% |
| Somchem S321 | <<locked>> | 92% | 52,576 psi | 85% | 3012 fps | 98.8% |
| Somchem S335 | <<locked>> | 98% | 55,129 psi | 89% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 52,707 psi | 85% | 2995 fps | 97.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,208 psi | 73% | 2897 fps | 96.5% |
| Vihtavuori N120 | <<locked>> | 86% | 55,027 psi | 89% | 2881 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 53,171 psi | 86% | 2910 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 52,736 psi | 85% | 2917 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 2979 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 2995 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,294 psi | 70% | 2831 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 96% | 55,579 psi | 90% | 3028 fps | 99% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,591 psi | 85% | 2995 fps | 99.8% |
| Winchester 748 | <<locked>> | 96% | 53,824 psi | 87% | 3071 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 52,939 psi | 85% | 3035 fps | 98.1% |
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% | 49,676 psi | 80% | 2822 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 33,301 psi | 54% | 2585 fps | 98.9% |
| Accurate 2200 | <<locked>> | 82% | 47,195 psi | 76% | 2910 fps | 95.3% |
| Accurate 2230 | <<locked>> | 82% | 46,992 psi | 76% | 2910 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 35,824 psi | 58% | 2664 fps | 97.1% |
| Accurate 2495 | <<locked>> | 80% | 25,396 psi | 41% | 2438 fps | 96.8% |
| Accurate 2520 | <<locked>> | 80% | 31,589 psi | 51% | 2598 fps | 95.1% |
| Accurate 4064 | <<locked>> | 86% | 29,689 psi | 48% | 2575 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 42,395 psi | 68% | 2703 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 80% | 42,772 psi | 69% | 2717 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 90% | 42,424 psi | 68% | 2831 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 45,455 psi | 73% | 2792 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 46,398 psi | 75% | 2881 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 40,451 psi | 65% | 2789 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 37,130 psi | 60% | 2690 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 30,589 psi | 49% | 2608 fps | 99.9% |
| Alliant Power Pro 1200-R | 28.6 gr | 82% | 39,610 psi | 64% | 2828 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 47,877 psi | 77% | 3022 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 39,044 psi | 63% | 2785 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,551 psi | 62% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 45,556 psi | 73% | 2913 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,470 psi | 75% | 2802 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,104 psi | 66% | 2694 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 47,863 psi | 77% | 2946 fps | 95.2% |
| Bofors RP3 | <<locked>> | 94% | 38,290 psi | 62% | 2785 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 37,333 psi | 60% | 2651 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 86% | 37,173 psi | 60% | 2749 fps | 95.8% |
| Hodgdon CFE223 | 34.3 gr | 90% | 47,834 psi | 77% | 3015 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 37,057 psi | 60% | 2713 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 37,405 psi | 60% | 2723 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 80% | 46,760 psi | 75% | 2802 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 88% | 39,987 psi | 64% | 2789 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 41,118 psi | 66% | 2861 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,410 psi | 39% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 41,495 psi | 67% | 2802 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 29,283 psi | 47% | 2579 fps | 97% |
| IMR 4064 | <<locked>> | 96% | 45,658 psi | 74% | 2864 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 39,668 psi | 64% | 2697 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 52,924 psi | 85% | 2848 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 43,656 psi | 70% | 2894 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 84% | 37,130 psi | 60% | 2690 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 44,034 psi | 71% | 2844 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 35,839 psi | 58% | 2664 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 84% | 32,329 psi | 52% | 2631 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 51,314 psi | 83% | 2785 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 44,106 psi | 71% | 2785 fps | 95.6% |
| Lovex S062 | <<locked>> | 90% | 37,028 psi | 60% | 2707 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 43,163 psi | 70% | 2785 fps | 100% |
| Norma 201 | <<locked>> | 88% | 38,914 psi | 63% | 2733 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 29,849 psi | 48% | 2536 fps | 95.2% |
| Norma 203B | <<locked>> | 94% | 41,814 psi | 67% | 2844 fps | 95% |
| Ramshot Big Game | <<locked>> | 96% | 45,165 psi | 73% | 2920 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 90% | 44,266 psi | 71% | 2874 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 43,874 psi | 71% | 2805 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,439 psi | 39% | 1660 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,898 psi | 60% | 2687 fps | 96.5% |
| ReloadSwiss RS 52 | 33.9 gr | 94% | 44,701 psi | 72% | 2966 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 37,086 psi | 60% | 2802 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 33,069 psi | 53% | 2582 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 90% | 39,088 psi | 63% | 2730 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 98% | 40,596 psi | 65% | 2822 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 44,034 psi | 71% | 2844 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 32,329 psi | 52% | 2631 fps | 95.4% |
| Shooters World Precision | <<locked>> | 90% | 37,028 psi | 60% | 2707 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,276 psi | 63% | 2700 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,876 psi | 76% | 2559 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,973 psi | 66% | 2792 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 43,381 psi | 70% | 2894 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,073 psi | 63% | 2723 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 44,005 psi | 71% | 2858 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,995 psi | 52% | 2507 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 27,586 psi | 44% | 2408 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 37,028 psi | 60% | 2710 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 31,227 psi | 50% | 2507 fps | 96.7% |
| Somchem S341 | <<locked>> | 92% | 45,832 psi | 74% | 2877 fps | 95.9% |
| Somchem S355 | <<locked>> | 98% | 42,322 psi | 68% | 2844 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 45,513 psi | 73% | 2746 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 36,521 psi | 59% | 2618 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 31,865 psi | 51% | 2523 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 80% | 26,760 psi | 43% | 2467 fps | 97.1% |
| Vihtavuori N140 | <<locked>> | 82% | 30,052 psi | 48% | 2523 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 94% | 35,679 psi | 58% | 2674 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 84% | 36,883 psi | 59% | 2680 fps | 95% |
| Vihtavuori N540 | <<locked>> | 84% | 30,980 psi | 50% | 2559 fps | 95.5% |
| Winchester 748 | <<locked>> | 84% | 35,592 psi | 57% | 2717 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 39,987 psi | 64% | 2795 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 86 powders for .25 GT loaded with the .257 | 91gr | Peregrine VLR5 (VLR-5). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,156 fps. Accurate 2495 gives the best case fill at 100 %, and 86 of the 86 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 91.0 gr projectile in 0.257" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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, Alliant Power Pro 1200-R, ReloadSwiss RS 52 rank at the top here: for .25 GT with the .257 | 91gr | Peregrine VLR5 (VLR-5) 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.