This spring I treated myself to a new CZ-452 rifle in .17HMR and got a Simmons .22mag scope in 3-9X32 size. The rifle has turned out to be a tack driver and I thought it deserved a better scope. I've never spent much money on scopes, the most expensive I own is a Nikon ProStaff 2-7X32 on my .358 Winchester, my 6.5X55 gets along with a Bushnell Sportview 3-9X40. So I like cheap scopes and have always gotten along fine with them, can't say a cheap scope has ever cost me a hunt or a shot at game.
So when I saw Sportsman's Guide had the Pentax 4-12X40 scope on sale for $69.95 I thought that would be a good step up from the Simmons .22mag scope I had bought for $39.95. Not so!
The first thing I noticed in trying to mount it for proper eye relief was that it was extremely critical in that regard. There just seemed to be no margin for error, no latitude at all, if the eye was not placed exactly right I got less than full field of view. I think that is what some people call the "eye box" that area in which one can move the head and still get a full field of view, this scope had a very small eye box, really to the point of being annoying.
But the deal breaker came when sighting in, the click adjustments were not at all distinct by sound nor by feel, but that didn't so much matter because they seemed to have no definite repeatable value anyway.
The photo shows five groups fired in normal sequence from left to right and top to bottom. The first group, at upper left, was about 2" low and left so I came up 8 clicks and right 8 clicks.
The next group, upper right, was high and right, over corrected, so I thought OK, so the 1/4 minute clicks are really 1/2 minute so I went back down 4 clicks and left 4 clicks.
Next group, left center, was about on for elevation but it seemed like the windage hadn't changed at all, still to the right, so I gave it 2 more clicks left and tried again.
That moved the group somewhat left, maybe 1/2" or about what two clicks should do so I gave it two more clicks left and fired the final five on the bottom left bull. As you see, those last two clicks caused the point of impact to jump low and left, nearly back to where I had started.
That's all she wrote, the Pentax is back to Sportsman's Guide and the cheap Simmons which worked fine is back on the rifle and still working fine. It's click adjustments are also hard to feel or hear, you pretty much just have to look at the arrow and the tick marks around the dial but it does adjust properly as close as I can read it and doesn't take a box of ammo to sight in.