Here's a few thing that have been laying on my bench unused for years.
First one is a drop in bore light for black powder rifles, as I recall the light is green. Not sure what the minimum bore size is for it but I had a .45 and it worked. Worked the last time I tried it years ago but the batteries are long dead and no promises. $10 shipped
Next up is the .357 Laser bore sighter. I bought it on a whim when I was into .357 max single shots and used this to zero scopes. I probably used it twice. Like the other, it worked last time I played with it but batteries are long dead and no promises. $10 shipped.
First one is a drop in bore light for black powder rifles, as I recall the light is green. Not sure what the minimum bore size is for it but I had a .45 and it worked. Worked the last time I tried it years ago but the batteries are long dead and no promises. $10 shipped
Next up is the .357 Laser bore sighter. I bought it on a whim when I was into .357 max single shots and used this to zero scopes. I probably used it twice. Like the other, it worked last time I played with it but batteries are long dead and no promises. $10 shipped.