So I was looking at some different threads here and on Corbin's website about making bullet jacket from hard copper tubing.
One thing that I was curious about is how do you know how long to cut your copper tubing?
I'm going to use .308 as the reference for this.
Would you start off using the same length of tubing for a 170gr that you would for a 150gr and then trim it? OR Is it a case of doing a couple test pieces and then adjusting the length of tubing you cut after that?
On the Corbin's website it states that you want the tubing to be half a caliber longer than the punch (IIRC). Which leads me to believe that you'd either have to know how long you were going to cut the tubing to begin with (when you order the punch?), OR you'd have to trim the tubing to length after you closed the one end.
Please enlighten me