hafted 3 glass points I made then shooted side by side with fields point arrows and a steel trade point one.
First time I shoot my knapped points
Results are very good.
Glass points penetration is comparable with steel trade point and superior to fields points (not big new I know
)
The interesting points is they are more solid than I thought at first.
I had them hit the dirt several times before turning real damaged.
One hit the small trunk you see in the picture deeply driving into the wood. The vegetable fibre binding failed and the foreshaft split in two. the glass point only lost a really small portion of the point. easily repairable.
I'm now a believer