10-04-2018, 12:44 AM
There are a bunch of minor grooves inside one of the major grooves.
It looks like some metal chips may have got stuck on the button when it was rifled.
The rifling is twisted. I think it is the angle making it look straight.
It looks like some metal chips may have got stuck on the button when it was rifled.
The rifling is twisted. I think it is the angle making it look straight.

