Load Specifications
Load data in caliber .17 Rem. Fireball with .172 | 18gr | Lehigh Defense Controlled Chaos bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Lovex S053 and IMR 4227.
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>> | 94% | 48,863 psi | 89% | 3967 fps | 95.9% |
| Accurate 1680 | <<locked>> | 92% | 48,602 psi | 88% | 3990 fps | 96.5% |
| Accurate No. 11 FS | <<locked>> | 84% | 49,835 psi | 90% | 4042 fps | 99.4% |
| Accurate No. 11 FS | <<locked>> | 82% | 49,342 psi | 90% | 4055 fps | 99.6% |
| ADI AR 2205 | <<locked>> | 86% | 48,370 psi | 88% | 3921 fps | 99.9% |
| ADI AR 2205 | <<locked>> | 84% | 47,079 psi | 85% | 3917 fps | 99.9% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 48,124 psi | 87% | 4124 fps | 99.2% |
| ADI AR 2207 | <<locked>> | 98% | 48,544 psi | 88% | 4150 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 98% | 47,906 psi | 87% | 4032 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 96% | 48,095 psi | 87% | 4062 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,210 psi | 51% | 2677 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,485 psi | 52% | 2710 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 45,281 psi | 82% | 4019 fps | 96.7% |
| IMR 4227 | <<locked>> | 92% | 47,152 psi | 86% | 3999 fps | 97.9% |
| IMR 4227 | <<locked>> | 92% | 49,632 psi | 90% | 4081 fps | 98.7% |
| Lovex D060 | <<locked>> | 86% | 47,805 psi | 87% | 4062 fps | 96.4% |
| Lovex D060 | <<locked>> | 84% | 47,529 psi | 86% | 4085 fps | 96.8% |
| Lovex D063 | <<locked>> | 86% | 48,863 psi | 89% | 3999 fps | 97.5% |
| Lovex S053 | <<locked>> | 94% | 47,543 psi | 86% | 4016 fps | 99.8% |
| Lovex S053 | <<locked>> | 92% | 47,413 psi | 86% | 4035 fps | 99.9% |
| Norma 200ᴾ | <<locked>> | 100% | 44,512 psi | 81% | 4009 fps | 96% |
| Norma 200ᴾ | <<locked>> | 100% | 48,544 psi | 88% | 4124 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,383 psi | 50% | 2730 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,702 psi | 50% | 2759 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 48,950 psi | 89% | 4072 fps | 98.2% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 49,284 psi | 89% | 4104 fps | 98.7% |
| Shooters World Blackout | <<locked>> | 82% | 47,500 psi | 86% | 4006 fps | 96.5% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 47,805 psi | 87% | 4062 fps | 96.4% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 47,529 psi | 86% | 4085 fps | 96.8% |
| Shooters World SOCOM | <<locked>> | 86% | 48,863 psi | 89% | 3999 fps | 97.5% |
| Shooters World SOCOM | <<locked>> | 84% | 48,124 psi | 87% | 4012 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 48,008 psi | 87% | 3862 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 48,037 psi | 87% | 3878 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 46,934 psi | 85% | 3967 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 49,197 psi | 89% | 4026 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 48,370 psi | 88% | 4072 fps | 99.8% |
| Vihtavuori N120 | <<locked>> | 98% | 48,776 psi | 89% | 4098 fps | 99.9% |
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>> | 92% | 45,179 psi | 82% | 3885 fps | 95% |
| Accurate 1680 | <<locked>> | 90% | 45,063 psi | 82% | 3911 fps | 95.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 43,352 psi | 79% | 3898 fps | 98.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 45,818 psi | 83% | 3976 fps | 99.1% |
| ADI AR 2205 | <<locked>> | 80% | 39,711 psi | 72% | 3720 fps | 99% |
| ADI AR 2205 | <<locked>> | 80% | 42,105 psi | 76% | 3806 fps | 99.6% |
| ADI AR 2207 | <<locked>> | 88% | 32,343 psi | 59% | 3698 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 86% | 32,024 psi | 58% | 3707 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 96% | 45,092 psi | 82% | 3970 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 92% | 42,134 psi | 76% | 3917 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,030 psi | 36% | 2402 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,639 psi | 37% | 2444 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 40,480 psi | 73% | 3894 fps | 95.2% |
| IMR 4227 | 14.2 gr | 86% | 38,435 psi | 70% | 3780 fps | 95.7% |
| IMR 4227 | 13.6 gr | 82% | 36,347 psi | 66% | 3743 fps | 95.5% |
| Lovex D060 | <<locked>> | 84% | 45,078 psi | 82% | 3993 fps | 95.7% |
| Lovex D060 | <<locked>> | 80% | 41,756 psi | 76% | 3930 fps | 95.2% |
| Lovex D063 | <<locked>> | 80% | 40,059 psi | 73% | 3786 fps | 95.2% |
| Lovex S053 | 13 gr | 80% | 31,111 psi | 56% | 3570 fps | 96.6% |
| Lovex S053 | 13 gr | 80% | 32,924 psi | 60% | 3648 fps | 97.7% |
| Norma 200 | <<locked>> | 98% | 41,843 psi | 76% | 3944 fps | 95.2% |
| Norma 200 | <<locked>> | 96% | 42,351 psi | 77% | 3976 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,551 psi | 35% | 2451 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,160 psi | 37% | 2497 fps | 100% |
| ReloadSwiss RS 36 | 15.1 gr | 86% | 37,753 psi | 69% | 3793 fps | 95.3% |
| ReloadSwiss RS 36 | 14.8 gr | 84% | 37,855 psi | 69% | 3819 fps | 95.9% |
| Shooters World Blackout | <<locked>> | 80% | 44,730 psi | 81% | 3940 fps | 95.8% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 45,078 psi | 82% | 3993 fps | 95.7% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,756 psi | 76% | 3930 fps | 95.2% |
| Shooters World SOCOM | <<locked>> | 80% | 40,059 psi | 73% | 3786 fps | 95.2% |
| Shooters World SOCOM | <<locked>> | 80% | 42,192 psi | 77% | 3868 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 28,848 psi | 52% | 3406 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,835 psi | 56% | 3484 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 36,245 psi | 66% | 3717 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,595 psi | 70% | 3796 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 30,153 psi | 55% | 3583 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 82% | 28,718 psi | 52% | 3550 fps | 95.4% |
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 37 powders for .17 Rem. Fireball loaded with the .172 | 18gr | Lehigh Defense Controlled Chaos. ADI AR 2207 delivers the highest muzzle velocity at 4,150 fps; across all powders the maximum-charge window runs from 2,677 fps to 4,150 fps. ADI AR 2207 gives the best case fill at 100 %, and 37 of the 37 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. ADI AR 2207, Hodgdon TrailBoss, Hodgdon TrailBoss 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. ReloadSwiss RS 36, Lovex S053, IMR 4227 rank at the top here: for .17 Rem. Fireball with the .172 | 18gr | Lehigh Defense Controlled Chaos 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.