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.