Re: US Optics Scope for Hunting??
I fingered the 1.8-10, the 1-4, and the 1.5-6 for about 45 minutes at SHOT. Keep in mind the 1.5-6 has the potential of displacing both the type II and type III SPR optics in one optic. In order to do so, its quick target acquisition ability is paramount to play this role.
The 1.8-10 retains the type III optic characteristics of critical eye relief and one eyed shooting on low power. The 1.5-6 does NOT - it comes up fast, is easy to use both eyes open. YET, you can dial it up to 6x and you have a usable mil scale reticle for real precision rifle/type III holds up and off.
The one I spent time with had what USO calls the "zeroing knobs" - still 48 click like the #1 knob, but with the covers on about the size of a beer bottle cap. I would probably opt for the Slimline #1 knobs on it for use as both a Type II and a Type III optic.
Bottom line for hunting though, the 1.5-6 with zeroing knobs would be great for tracking elk running thru the timber through the moderate "long range hunting" shots out to say 600 yards.
The 1.8-10 is a very nice scope, but it acts like a Type III only, not like a Type II.