Load Specifications
Load data in caliber .17 Rem. with .172 | 20gr | Impala LWHV LS bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, SNPE Vectan SP 3 and Norma 200.
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>> | 84% | 52,040 psi | 84% | 4088 fps | 99.3% |
| Accurate 2015 | <<locked>> | 98% | 53,882 psi | 87% | 4199 fps | 98.9% |
| Accurate 2460 | <<locked>> | 94% | 53,171 psi | 86% | 4180 fps | 96.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,615 psi | 76% | 4085 fps | 98% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,969 psi | 89% | 4265 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 92% | 55,579 psi | 90% | 4160 fps | 98.1% |
| ADI AR 2207 | <<locked>> | 90% | 55,579 psi | 90% | 4268 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 54,940 psi | 89% | 4291 fps | 97.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 53,127 psi | 86% | 4304 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 53,432 psi | 87% | 4249 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 88% | 54,172 psi | 88% | 4199 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 55,303 psi | 90% | 4124 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 98% | 54,940 psi | 89% | 4291 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 92% | 54,853 psi | 89% | 4259 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 90% | 53,867 psi | 87% | 4163 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,401 psi | 53% | 2785 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 45,078 psi | 73% | 4124 fps | 96.4% |
| IMR 4198 | <<locked>> | 94% | 53,534 psi | 87% | 4222 fps | 99.8% |
| IMR 4227 | <<locked>> | 84% | 53,940 psi | 88% | 4177 fps | 100% |
| Lovex S053 | <<locked>> | 86% | 55,492 psi | 90% | 4163 fps | 100% |
| Norma 200 | <<locked>> | 90% | 54,607 psi | 89% | 4245 fps | 99.8% |
| Norma 202ᴾ | <<locked>> | 100% | 51,314 psi | 83% | 4177 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,706 psi | 53% | 2854 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 54,520 psi | 88% | 4206 fps | 100% |
| Rottweil R 901 | <<locked>> | 98% | 53,055 psi | 86% | 4190 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 52,997 psi | 86% | 3921 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 55,622 psi | 90% | 4278 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 54,186 psi | 88% | 4252 fps | 98.3% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 55,042 psi | 89% | 4150 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 53,490 psi | 87% | 4137 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 90% | 55,463 psi | 90% | 4196 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 54,143 psi | 88% | 4170 fps | 99.4% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,795 psi | 87% | 4157 fps | 98.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 46,137 psi | 75% | 4081 fps | 97.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 49,008 psi | 80% | 4081 fps | 95.9% |
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% | 45,992 psi | 75% | 3947 fps | 98.4% |
| Accurate 2015 | <<locked>> | 88% | 39,363 psi | 64% | 3845 fps | 95.6% |
| Accurate 2460 | <<locked>> | 92% | 49,443 psi | 80% | 4098 fps | 95.2% |
| Accurate 2495 | <<locked>> | 94% | 38,363 psi | 62% | 3865 fps | 95.7% |
| Accurate 2520 | <<locked>> | 98% | 50,908 psi | 83% | 4177 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 84% | 43,903 psi | 71% | 3888 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 41,002 psi | 67% | 3937 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 86% | 44,918 psi | 73% | 4052 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 84% | 32,039 psi | 52% | 3711 fps | 95.5% |
| Alliant Reloder-10x | 17.1 gr | 80% | 35,259 psi | 57% | 3766 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,772 psi | 69% | 3930 fps | 98.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 42,511 psi | 69% | 3832 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 92% | 45,542 psi | 74% | 4068 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 88% | 47,630 psi | 77% | 4094 fps | 95% |
| Hodgdon H4198 | <<locked>> | 86% | 47,427 psi | 77% | 4012 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,149 psi | 39% | 2516 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,598 psi | 69% | 4052 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 35,926 psi | 58% | 3763 fps | 96.6% |
| IMR 4227 | <<locked>> | 80% | 47,311 psi | 77% | 4029 fps | 99.8% |
| Lovex S053 | <<locked>> | 80% | 46,905 psi | 76% | 3990 fps | 100% |
| Norma 200 | 17.7 gr | 80% | 40,263 psi | 65% | 3894 fps | 97.7% |
| Norma 202 | <<locked>> | 98% | 48,399 psi | 79% | 4111 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,018 psi | 39% | 2569 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,066 psi | 78% | 4068 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 96% | 50,285 psi | 82% | 4124 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,917 psi | 70% | 3724 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 48,428 psi | 79% | 4114 fps | 95.1% |
| SNPE Vectan SP 3 | 18.4 gr | 86% | 42,279 psi | 69% | 3967 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 48,298 psi | 78% | 4003 fps | 95.1% |
| Somchem S335 | <<locked>> | 94% | 44,788 psi | 73% | 3934 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 41,075 psi | 67% | 3888 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 35,592 psi | 58% | 3698 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 90% | 39,349 psi | 64% | 3809 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 94% | 38,101 psi | 62% | 3862 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 98% | 45,658 psi | 74% | 4003 fps | 95% |
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 35 powders for .17 Rem. loaded with the .172 | 20gr | Impala LWHV LS. Alliant AR-Comp delivers the highest muzzle velocity at 4,304 fps; across all powders the maximum-charge window runs from 2,785 fps to 4,304 fps. Accurate 2495 gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (425 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 20.0 gr projectile in 0.172" calls for a 1:6.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 2520, Alliant AR-Comp 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 Reloder-10x, SNPE Vectan SP 3, Norma 200 rank at the top here: for .17 Rem. with the .172 | 20gr | Impala LWHV LS 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.