Spine 400 Easton 5MM FMJ vs Spine 500 Easton 5MM FMJ: specs compared
Updated 05 September 2026.
10.2 GPI
Spine 400 Easton 5MM FMJ wins on grains per inch
On grains per inch, Spine 400 Easton 5MM FMJ leads: 10.2 GPI versus 9.1 GPI.
| Spec | Spine 400 Easton 5MM FMJ | Spine 500 Easton 5MM FMJ |
|---|---|---|
| Model | Easton 5mm FMJ | Easton 5mm FMJ |
| Brand | Easton | Easton |
| Spine | 400 | 500 |
| Outside diameter | .263 in OD | .256 in OD |
| Weight | 10.2 GPI | 9.1 GPI |
| Grains per inch | 10.2 GPI | 9.1 GPI |
| Inside diameter | .204 in | .204 in |
| Stock nock | 5mm X nock (9 gr) | 5mm X nock (9 gr) |
| Stock insert | 5mm HIT insert (16 gr) | 5mm HIT insert (16 gr) |
| Point thread | 8-32 | 8-32 |
| Straightness | +/-.001 in | +/-.001 in |
| Suits | a medium draw of roughly 45 to 65 lb | a lighter draw of roughly 25 to 45 lb |
Questions and answers
Which has the higher grains per inch, Spine 400 Easton 5MM FMJ or Spine 500 Easton 5MM FMJ?
On grains per inch, Spine 400 Easton 5MM FMJ leads: 10.2 GPI versus 9.1 GPI.
How do Spine 400 Easton 5MM FMJ and Spine 500 Easton 5MM FMJ compare?
On grains per inch, Spine 400 Easton 5MM FMJ leads: 10.2 GPI versus 9.1 GPI.