I'm still trying to decide on the best points for narrow diameter bamboo shafts like this. I tend to prefer 150-200gr, with the idea that they will all weight in between 500-550gr or so. I plan to cut the arrows short enough that it wont be an overly weak spined arrow.
With commercially available glue-on points, i find myself having to fill in the void with glue or epoxy, and it creates a lip which catches the face of bag targets upon removal(it also looks unsightly). And the smaller 1/4" points they sell are much too light. What if they made a variety pack of nice steel or brass points in different diameters but with different lengths so that they all weighed the same. I'm imagining something like a taper towards the back end of the point so they are easy to pull from targets.
I did buy a pack of 150gr duplex nails after seeing folks use this method, but i have a some concerns. Will the sinew you bind it with need frequent replacing from target practice? And when your ready to install stone points, halfted in steel trade points, or glue on broadheads, how would you do this?