I'd get the 10x. I shot the side focus model before and it works fine out as far as you'll shoot a .308.
My target rifles have variable power scopes on them now. A Nikon with 5-20x and a Leupold with 8.5-25x. I typically shoot with them set at 12x, sometimes more sometimes less. I hardly ever go over 18x. I dial them down to their lowest settings when I want to see bullets hitting the targets.
The crosshairs on the SS make it hard to do precise target shooting. A little thick for my liking. I prefer the Leupold fine duplex.
My target rifles have variable power scopes on them now. A Nikon with 5-20x and a Leupold with 8.5-25x. I typically shoot with them set at 12x, sometimes more sometimes less. I hardly ever go over 18x. I dial them down to their lowest settings when I want to see bullets hitting the targets.
The crosshairs on the SS make it hard to do precise target shooting. A little thick for my liking. I prefer the Leupold fine duplex.