70" Longbow | Arrow Spec — 55lb Longbow at 31" Draw
Bow Summary
| Spec | Value |
|---|---|
| Bow | Galaxy Black Ridge 70" Longbow |
| Rated draw weight | 55lb (at 28" baseline) |
| Your draw length | 31" |
| Effective draw weight at 31" | ~61–62lb (+2lb per inch × 3" over 28" baseline) |
Arrow Requirements
| Spec | Value | Why |
|---|---|---|
| Spine | 400 | Real-owner tested on this exact bow at similar draw length and weight |
| Arrow length | 31–32" | Matches your draw with safe clearance past the shelf |
| Material | Carbon | Carbon Express Predator line specifically recommended by Black Ridge owner |
| Point weight | 100–125gr | Heavier point suits longbow efficiency — real owner confirmed 125gr |
| Total arrow weight | 490–620 grains | 8–10 GPP × ~61lb effective draw weight |
| Minimum arrow weight | 488 grains floor | Never go below 8 GPP on this bow |
| Straightness | .006 or better | Standard for carbon at this weight class |
Do NOT Buy These
| What | Why |
|---|---|
| 500 spine | Too weak/flexible for ~61lb effective — poor flight, inconsistent |
| 30" arrows | Too short — point may pull behind rest at full draw (safety risk) |
| Arrows rated "20–50lb" | Your ~61lb effective draw is outside their stated safe range |
| Fiberglass arrows | Not rated for this draw weight — risk of shattering |
Based on real owner data from Archery Talk forum + GPP math at confirmed 61–62lb effective draw weight.