What would be the optimal magnification for a spotting scope ("see the bullet holes") at 600 yards; 1000 yards? Assume .308 firing at both black and white bulls.
Most top quality scopes will let you see 6mm bullet holes at 600. You will need reasonable viewing conditions.
At 1000, I'd say that only on the best of best days, will the very expensive scopes allow you to see a bullet hole. Lighting is critical. Must be no backlight on the target, no shadows, Sun, moon and stars must align.
I like my 25-75. As to what's optimal? Good question,
what color is the target ???
my inexpensive 22-67x 100 mm scope will spot holes in the white lite blue 1000 yd target....but does not see holes in black at 200.....
I only ever shot bullets in the black, so I have no point of reference to how they look out in the white.
Mines a Nikon Fieldscope ED 82mm with the 25-75 angled eyepiece. At 600, conditions can be less than ideal (even kinda poor) and still see a bullet in the black. But at 1k, forget it. Things better be perfect.
Note correction to post....308 caliber; both black and white bulls. Thanks for comments so far. I need to buy a spotting scope and want to only buy it once.