I still have some K10s that I use for hunting. I like them and since I have had them and hunted with them since 1970, they are durable and make a nice hunting shaft.

Had em when they came out when I was young. They were terrible shafts for me , it didnt take much to send the points up into the shafts.

Only thing I remember about the fiberglass arrows was a microflite of some size..(can't remember) fish tailing towards the biggest buck I'd ever (and may be still) seen in my life.

I was in a homemade loc on one afternoon about 1968 when the Bluejays started raising Cain and I thought a cow was coming up the hill. I could see sapling tops shaking, bending down and hear branches cracking. Then I saw a big dark brown body of a monster size buck. He was just walking over everything at a steady pace. Wasn't but about a medium 8pt but he was a giant.

He got about 20yds broadside and the microflite was on the way. The rear end waving back and forth..right before it got to his kill area the fletching end hit a sapling and the buck jumped sideways knocking down a 10" dia. dead tree. I've hated fiberglass arrows ever since. Although, I'm sure mine weren't the right spine for my bow.