I've been following this thread w/o comment till now.
What I'm 'fixin' to say illustrates my progress as a handloader SINCE joining the 'fire'.
"The best 'pressure sign' is NO pressure sign!" ( you may quote me ifn you're amind to)
Research average velocity for cartridge/bullet/bll length - chrono till you get there.
There are no good replacements parts for eyes, nose, fingers, etc.
Jerry