I am thinking about buying one!
Have a BSA columator type that works great for scopes but am starting to shoot several old milsurps.
Have heard all kinds of don'ts about using one but nothing positive.
Can they be used in daylight (ie: at the range to set sights say for 100 yards? 200 yards?)
Don't mind buying one but don't want to waste the money if it will not work for me.
beekeeper