for an alignment gauge that came to mind last time
baffle strikes and alignment in a can arose:
First: use a barrel threading alignment tool die starter screwed into can with pin directed to
front of can, of course ( 1/2-28 RH Barrel Threading Alignment Gunsmithing Tool TAT Die Starter for .22LR )
e.g.: << http://www.ebay.com/itm/121517779665?_t ... EBIDX%3AIT >>
Second: make/find an thin wall aluminum or steel 'straw' about 8" long with hole ≥217" that slips firmly over
pin. One now has an axial long steady rod .
Third: In a lathe collet hold the bullet for the particular can ( e.g., .45, etc.) drill a hole
the diameter of the 'straw' so that it can slide easily up and down like the sliding weight on a dent or hub
puller on a slide hammer.
e.g., << http://atoztool.com/281.html >>
Coat the bullet with lamp black/soot, grease pencil, lipstick, or marker, insert it onto the
'straw' and slide it up and down ( shaken, not stirred ) inside the can.
Any contact points are immediately seen on the slug.
Free non commercial use given.
