Just wondering what would you consider safe for the low end of  arrow weight on the vintage 1962 Kodiak? I would love to shoot this bow with light weight arrows for target 3D. What say you?

9.5 or 10 grains per pound of draw weight.  Why take a chance on such a beautiful old classic.

I'd keep it at least 9 gpp.    

You could prolly get by with 8, but like reddogge said, why take the chance.