I picked up a old bow with some arrows from a customer of mine and was wondering if anyone knows what spine these arrows are. They are 30", nock to bop.
			
			
			
				Think they're about 45-50#.  But I'm going from memory here.  They could be five pounds less or more.  I have a chart around somewhere.  I'll try to find it.
			
			
			
				OK, found the charts.  45-50# is probably right.  The charts give different answers.  One says that the spine are different depending on whether they are target or hunting arrows.  In that case, the target arrows were 5# heavier.  However, micro-flite changed their numbering system sometime during their production, and a later chart says they're 5# lighter.  Initially they were numbered from 1 to 10.  Later from 1 through 12.
			
			
			
				Orion, Thanks for the info. Pete