[qazedx]

the gun spear track (barrel) will be 1m long, I will be using a flopper shaft as it is easier to make I'll try to hunt all kinds of fish, but mostly I'll hunt in fresh waters, I believe a hard stainless steal shaf should do the job, but I'm interestin in hearin other opinions and I dont know the number of steal.
I am making a woden gun just with stell track so it wuold be longer lasting and more acurate also I believe it wuold allow me to use alot of power.
also I was wondering what size shuold be the gap in picture a)