Spine 400 Easton 5MM FMJ vs Spine 300 Easton 6 5MM Bowhunter: 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 9.5 GPI.
| Spec | Spine 400 Easton 5MM FMJ | Spine 300 Easton 6 5MM Bowhunter |
|---|---|---|
| Model | Easton 5mm FMJ | Easton 6.5mm Bowhunter |
| Brand | Easton | Easton |
| Spine | 400 | 300 |
| Outside diameter | .263 in OD | .300 in OD |
| Weight | 10.2 GPI | 9.5 GPI |
| Grains per inch | 10.2 GPI | 9.5 GPI |
| Inside diameter | .204 in | .246 in |
| Stock nock | 5mm X nock (9 gr) | 6.5mm Microlite nock (8 gr) |
| Stock insert | 5mm HIT insert (16 gr) | 6.5mm insert (23 gr, 5/16 field points) |
| Point thread | 8-32 | 8-32 |
| Straightness | +/-.001 in | +/-.005 in |
| Suits | a medium draw of roughly 45 to 65 lb | a heavy draw of roughly 65 lb and up |
Questions and answers
Which has the higher grains per inch, Spine 400 Easton 5MM FMJ or Spine 300 Easton 6 5MM Bowhunter?
On grains per inch, Spine 400 Easton 5MM FMJ leads: 10.2 GPI versus 9.5 GPI.
How do Spine 400 Easton 5MM FMJ and Spine 300 Easton 6 5MM Bowhunter compare?
On grains per inch, Spine 400 Easton 5MM FMJ leads: 10.2 GPI versus 9.5 GPI.