Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:52 gr
Bullet Diameter:0.257"
Bullet Length:<<locked>>
Caliber:.255 GS load data
Case Length (l3):2.165"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:62 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Load data in caliber .255 GS with .257 | 52gr | Peregrine VRG-3 bullet and 127 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Hodgdon H322.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 54,984 psi | 86% | 3891 fps | 100% |
| Accurate 1680 | <<locked>> | 82% | 54,172 psi | 85% | 3878 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 54,505 psi | 85% | 3953 fps | 99.9% |
| Accurate 2015 | <<locked>> | 96% | 57,246 psi | 90% | 4006 fps | 100% |
| Accurate 2460 | <<locked>> | 90% | 53,577 psi | 84% | 3947 fps | 98.5% |
| Accurate 2460 | <<locked>> | 92% | 56,565 psi | 89% | 4009 fps | 98.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3993 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,258 psi | 83% | 3967 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,085 psi | 86% | 4006 fps | 98.5% |
| Accurate 2520 | <<locked>> | 94% | 53,940 psi | 85% | 3986 fps | 98.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,691 psi | 79% | 3937 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 3911 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 88% | 55,579 psi | 87% | 3914 fps | 99.6% |
| Accurate LT-30 | <<locked>> | 88% | 54,853 psi | 86% | 3907 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 88% | 55,956 psi | 88% | 3934 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 88% | 55,201 psi | 87% | 3924 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 86% | 55,941 psi | 88% | 3983 fps | 100% |
| ADI AR 2207 | <<locked>> | 86% | 54,998 psi | 86% | 3973 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 55,637 psi | 87% | 4042 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 88% | 54,752 psi | 86% | 4032 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 96% | 57,087 psi | 89% | 4029 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 96% | 56,188 psi | 88% | 4016 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 96% | 55,259 psi | 87% | 4055 fps | 100% |
| Alliant AR-Comp | <<locked>> | 96% | 54,172 psi | 85% | 4042 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 57,087 psi | 89% | 4167 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 54,302 psi | 85% | 3996 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 92% | 56,768 psi | 89% | 4042 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,027 psi | 85% | 3930 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 56,811 psi | 89% | 3986 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,201 psi | 87% | 3878 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 54,462 psi | 85% | 3865 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 94% | 56,246 psi | 88% | 3970 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,390 psi | 87% | 3957 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 96% | 56,173 psi | 88% | 4049 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,114 psi | 86% | 4029 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 90% | 53,911 psi | 84% | 4009 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 92% | 56,898 psi | 89% | 4072 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 90% | 55,869 psi | 88% | 4026 fps | 99% |
| Hodgdon H335 | <<locked>> | 90% | 54,882 psi | 86% | 4009 fps | 98.9% |
| Hodgdon H4198 | <<locked>> | 86% | 57,609 psi | 90% | 3993 fps | 99.4% |
| Hodgdon H4198 | <<locked>> | 86% | 56,869 psi | 89% | 3986 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 96% | 54,418 psi | 85% | 4012 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 98% | 57,188 psi | 90% | 4072 fps | 96.6% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 56,971 psi | 89% | 4101 fps | 97.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 56,043 psi | 88% | 4081 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,822 psi | 51% | 2628 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,532 psi | 51% | 2625 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 56,724 psi | 89% | 4029 fps | 96.4% |
| Hodgdon VARGET | <<locked>> | 98% | 55,854 psi | 88% | 4016 fps | 96.2% |
| IMR 3031 | <<locked>> | 98% | 56,101 psi | 88% | 4104 fps | 99.9% |
| IMR 3031 | <<locked>> | 98% | 55,085 psi | 86% | 4091 fps | 99.8% |
| IMR 4198 | <<locked>> | 90% | 54,737 psi | 86% | 3973 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 57,421 psi | 90% | 4022 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 56,492 psi | 89% | 3950 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 55,767 psi | 87% | 3940 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 57,087 psi | 89% | 4029 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 96% | 56,188 psi | 88% | 4016 fps | 97.1% |
| Lovex D073.4 | <<locked>> | 86% | 57,566 psi | 90% | 4055 fps | 98.5% |
| Lovex D073.4 | <<locked>> | 86% | 56,463 psi | 88% | 4035 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 90% | 53,737 psi | 84% | 3940 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 92% | 56,782 psi | 89% | 4003 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 98% | 56,884 psi | 89% | 4045 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 98% | 55,695 psi | 87% | 4029 fps | 98.6% |
| Lovex S053 | <<locked>> | 82% | 55,143 psi | 86% | 3878 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 54,360 psi | 85% | 3868 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 57,696 psi | 90% | 3986 fps | 96.1% |
| Lovex S062ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 3957 fps | 96.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,388 psi | 82% | 3940 fps | 96.4% |
| Norma 200 | <<locked>> | 86% | 54,375 psi | 85% | 3970 fps | 100% |
| Norma 200 | <<locked>> | 88% | 56,565 psi | 89% | 4012 fps | 100% |
| Norma 201 | <<locked>> | 98% | 56,362 psi | 88% | 4009 fps | 97.1% |
| Norma 201 | <<locked>> | 98% | 55,259 psi | 87% | 3996 fps | 97% |
| Norma 202 | <<locked>> | 98% | 56,681 psi | 89% | 4039 fps | 99.1% |
| Norma 202 | <<locked>> | 98% | 55,695 psi | 87% | 4026 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 96% | 57,537 psi | 90% | 4049 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,938 psi | 52% | 2687 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,590 psi | 51% | 2684 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 57,450 psi | 90% | 3986 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 56,623 psi | 89% | 3976 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 57,043 psi | 89% | 4035 fps | 98.4% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 56,144 psi | 88% | 4022 fps | 98.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,602 psi | 76% | 3963 fps | 96.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,688 psi | 75% | 3940 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 96% | 56,681 psi | 89% | 4022 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 96% | 55,361 psi | 87% | 3999 fps | 98.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3999 fps | 97.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 55,477 psi | 87% | 3980 fps | 97% |
| Shooters World AR Plus | <<locked>> | 86% | 57,566 psi | 90% | 4055 fps | 98.5% |
| Shooters World AR Plus | <<locked>> | 86% | 56,463 psi | 88% | 4035 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 56,884 psi | 89% | 4045 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 98% | 55,695 psi | 87% | 4029 fps | 98.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 53,447 psi | 84% | 3957 fps | 96.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,388 psi | 82% | 3940 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,983 psi | 85% | 3914 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 57,217 psi | 90% | 3980 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 55,390 psi | 87% | 3684 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 57,696 psi | 90% | 3724 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 56,652 psi | 89% | 4042 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 55,724 psi | 87% | 4029 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,187 psi | 86% | 4012 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 54,331 psi | 85% | 3999 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,332 psi | 87% | 3924 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 54,375 psi | 85% | 3904 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 3829 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 3816 fps | 99% |
| Somchem S321 | <<locked>> | 92% | 55,579 psi | 87% | 4009 fps | 97.3% |
| Somchem S321 | <<locked>> | 92% | 54,607 psi | 86% | 3993 fps | 97.1% |
| Somchem S335 | <<locked>> | 96% | 54,143 psi | 85% | 3904 fps | 99.3% |
| Somchem S335 | <<locked>> | 98% | 56,797 psi | 89% | 3957 fps | 99.6% |
| Vihtavuori N120 | <<locked>> | 86% | 55,840 psi | 88% | 3917 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 54,955 psi | 86% | 3904 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,636 psi | 86% | 3921 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 57,508 psi | 90% | 3973 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 54,781 psi | 86% | 3917 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 98% | 57,319 psi | 90% | 3967 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 3996 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 3980 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 4003 fps | 99.4% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 3990 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 94% | 54,375 psi | 85% | 3963 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 96% | 57,377 psi | 90% | 4026 fps | 97.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 3986 fps | 99% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3970 fps | 98.9% |
| Winchester 748 | <<locked>> | 96% | 57,087 psi | 89% | 4085 fps | 98.1% |
| Winchester 748 | <<locked>> | 96% | 56,115 psi | 88% | 4068 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 98% | 56,260 psi | 88% | 4029 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,288 psi | 87% | 4012 fps | 96.3% |
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% | 51,155 psi | 80% | 3819 fps | 100% |
| Accurate 1680 | <<locked>> | 80% | 50,357 psi | 79% | 3806 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,214 psi | 54% | 3468 fps | 96.3% |
| Accurate 2015 | <<locked>> | 80% | 33,185 psi | 52% | 3442 fps | 95.9% |
| Accurate 2460 | <<locked>> | 82% | 40,393 psi | 63% | 3642 fps | 95.3% |
| Accurate 2460 | <<locked>> | 84% | 42,119 psi | 66% | 3691 fps | 95.9% |
| Accurate 2495 | <<locked>> | 84% | 30,966 psi | 49% | 3402 fps | 95.4% |
| Accurate 2495 | <<locked>> | 86% | 31,952 psi | 50% | 3442 fps | 95.9% |
| Accurate 2520 | <<locked>> | 86% | 41,002 psi | 64% | 3691 fps | 95.1% |
| Accurate 2520 | <<locked>> | 88% | 43,178 psi | 68% | 3747 fps | 95.8% |
| Accurate 4064 | <<locked>> | 92% | 38,624 psi | 61% | 3648 fps | 95.6% |
| Accurate 4064 | <<locked>> | 92% | 37,246 psi | 58% | 3612 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 43,033 psi | 67% | 3645 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 80% | 42,308 psi | 66% | 3632 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 80% | 43,352 psi | 68% | 3655 fps | 95.7% |
| Accurate LT-32 | <<locked>> | 80% | 42,627 psi | 67% | 3642 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 46,296 psi | 73% | 3802 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 45,353 psi | 71% | 3786 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 42,003 psi | 66% | 3740 fps | 97.1% |
| ADI AR 2219 | <<locked>> | 80% | 41,133 psi | 64% | 3724 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 92% | 50,270 psi | 79% | 3885 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 92% | 49,385 psi | 77% | 3868 fps | 95.5% |
| Alliant AR-Comp | 42.1 gr | 80% | 31,488 psi | 49% | 3481 fps | 98% |
| Alliant AR-Comp | 42.1 gr | 80% | 30,603 psi | 48% | 3455 fps | 97.6% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 53,127 psi | 83% | 4081 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,320 psi | 62% | 3655 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,334 psi | 60% | 3632 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,485 psi | 74% | 3802 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,557 psi | 73% | 3786 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,119 psi | 66% | 3602 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,379 psi | 65% | 3586 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 46,572 psi | 73% | 3760 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 45,745 psi | 72% | 3743 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 90% | 45,426 psi | 71% | 3812 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 47,616 psi | 75% | 3871 fps | 95.8% |
| Hodgdon H322 | 43.5 gr | 80% | 38,130 psi | 60% | 3632 fps | 95.9% |
| Hodgdon H322 | 43.5 gr | 80% | 37,246 psi | 58% | 3612 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 80% | 38,986 psi | 61% | 3635 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 82% | 41,104 psi | 64% | 3698 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 80% | 47,369 psi | 74% | 3783 fps | 98% |
| Hodgdon H4198 | <<locked>> | 80% | 46,644 psi | 73% | 3770 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 94% | 51,169 psi | 80% | 3944 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 96% | 53,403 psi | 84% | 3996 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 49,763 psi | 78% | 3947 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 48,820 psi | 77% | 3927 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,250 psi | 38% | 2372 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,960 psi | 38% | 2372 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,011 psi | 83% | 3953 fps | 95.5% |
| Hodgdon VARGET | <<locked>> | 96% | 52,156 psi | 82% | 3940 fps | 95.3% |
| IMR 3031 | 44.2 gr | 84% | 34,635 psi | 54% | 3586 fps | 95.5% |
| IMR 3031 | 44.2 gr | 84% | 33,692 psi | 53% | 3556 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 40,089 psi | 63% | 3655 fps | 99.5% |
| IMR 4198 | <<locked>> | 80% | 39,334 psi | 62% | 3638 fps | 99.4% |
| IMR 4227 | <<locked>> | 80% | 53,026 psi | 83% | 3888 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 52,301 psi | 82% | 3878 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 50,270 psi | 79% | 3885 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 92% | 49,385 psi | 77% | 3868 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 46,064 psi | 72% | 3809 fps | 96.2% |
| Lovex D073.4 | <<locked>> | 80% | 44,947 psi | 70% | 3786 fps | 95.9% |
| Lovex D073.5 | <<locked>> | 86% | 46,528 psi | 73% | 3783 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 86% | 45,382 psi | 71% | 3763 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 90% | 42,496 psi | 67% | 3734 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 90% | 41,365 psi | 65% | 3711 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 51,851 psi | 81% | 3819 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 51,053 psi | 80% | 3809 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 53,983 psi | 85% | 3911 fps | 95.2% |
| Lovex S062 | <<locked>> | 98% | 50,227 psi | 79% | 3888 fps | 95.8% |
| Lovex S062 | <<locked>> | 98% | 49,197 psi | 77% | 3868 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 44,628 psi | 70% | 3766 fps | 99.8% |
| Norma 200 | <<locked>> | 80% | 43,395 psi | 68% | 3743 fps | 99.7% |
| Norma 201 | <<locked>> | 94% | 49,168 psi | 77% | 3858 fps | 95.5% |
| Norma 201 | <<locked>> | 94% | 48,095 psi | 75% | 3839 fps | 95.2% |
| Norma 202 | <<locked>> | 88% | 40,408 psi | 63% | 3675 fps | 95.7% |
| Norma 202 | <<locked>> | 88% | 39,479 psi | 62% | 3655 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,824 psi | 84% | 3973 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,250 psi | 38% | 2428 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 37% | 2421 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 53,737 psi | 84% | 3921 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 52,881 psi | 83% | 3911 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 43,540 psi | 68% | 3737 fps | 95.3% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 42,656 psi | 67% | 3717 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 45,150 psi | 71% | 3868 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 44,222 psi | 69% | 3845 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 86% | 41,568 psi | 65% | 3678 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 86% | 40,350 psi | 63% | 3652 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 96% | 49,719 psi | 78% | 3858 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 96% | 48,588 psi | 76% | 3835 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 46,064 psi | 72% | 3809 fps | 96.2% |
| Shooters World AR Plus | <<locked>> | 80% | 44,947 psi | 70% | 3786 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 42,496 psi | 67% | 3734 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 41,365 psi | 65% | 3711 fps | 95.2% |
| Shooters World Precision | <<locked>> | 98% | 50,227 psi | 79% | 3888 fps | 95.8% |
| Shooters World Precision | <<locked>> | 98% | 49,197 psi | 77% | 3868 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 50,096 psi | 79% | 3832 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,026 psi | 83% | 3898 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,963 psi | 74% | 3543 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,267 psi | 73% | 3533 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,569 psi | 67% | 3730 fps | 96.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,669 psi | 65% | 3711 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,798 psi | 62% | 3665 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,943 psi | 61% | 3645 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 40,059 psi | 63% | 3576 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 39,189 psi | 61% | 3560 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 36,912 psi | 58% | 3491 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 36,027 psi | 56% | 3471 fps | 95.4% |
| Somchem S321 | <<locked>> | 88% | 48,008 psi | 75% | 3845 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 47,007 psi | 74% | 3825 fps | 95.3% |
| Somchem S335 | <<locked>> | 84% | 36,796 psi | 58% | 3497 fps | 95.4% |
| Somchem S335 | <<locked>> | 84% | 35,824 psi | 56% | 3474 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 46,267 psi | 73% | 3743 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 45,397 psi | 71% | 3727 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,405 psi | 59% | 3530 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 80% | 36,550 psi | 57% | 3510 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 32,677 psi | 51% | 3386 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 31,865 psi | 50% | 3366 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 84% | 31,575 psi | 49% | 3432 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 84% | 30,632 psi | 48% | 3406 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 88% | 38,334 psi | 60% | 3583 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 37,434 psi | 59% | 3560 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 90% | 47,355 psi | 74% | 3809 fps | 95% |
| Vihtavuori N530 | <<locked>> | 92% | 49,821 psi | 78% | 3871 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 90% | 39,668 psi | 62% | 3619 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 90% | 38,711 psi | 61% | 3596 fps | 95% |
| Winchester 748 | <<locked>> | 90% | 46,035 psi | 72% | 3848 fps | 95.6% |
| Winchester 748 | <<locked>> | 90% | 45,092 psi | 71% | 3829 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 96% | 52,489 psi | 82% | 3950 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 96% | 51,532 psi | 81% | 3934 fps | 95.3% |
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 184 powders for .255 GS loaded with the .257 | 52gr | Peregrine VRG-3. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 4,167 fps; across all powders the maximum-charge window runs from 2,625 fps to 4,167 fps. Accurate 2495 gives the best case fill at 100 %, and 184 of the 184 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 2495, Accurate 4064 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 AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for .255 GS with the .257 | 52gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2200, Accurate 2230 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.