I think the 4x Nikon Prostaff is the best fixed 4x for the money bar none...
Nikon calls it the "rimfire classic" so I talked to the NikonUSA tech-reps on the phone and by email. I talked with two different reps that way and got the same answer.
The Prostaff 4x is built and tested to withstand recoil up to .375 H&H. It has a fairly fine reticle, but is adjusted to be parallax-free out to 75 yards.
Parallax distortion is all but nil out to 150 yards.
4 inches of eye-relief
Made with a metal-on-metal tracking mechanism.
Japanese or Korean glass assembled in Thailand or the Philippines, not in Red China...
Limited Lifetime warranty...
In other words, for a .22, 30/30, 45/70 woodsgun, .444 Marlin, .44 Mag rifle, .35 Remington, muzzleloader or slug gun, it is ideal!
$99.99 most anywhere including Wally World.
It is very bright and has a fairly good field-of-view.
My experience with the one I mounted on this Marlin is that all of the above is true.
It really gives a good option for a rugged fixed power that is better, brighter and more rugged than the Trashco/Simmons/BSA/etc $39.99 scopes that the reticle breaks in or won't adjust after 100 rounds or so.
No cheap plastic guts in these babies, but a BUNCH cheaper than a Leupold M8 fixed power scope.
All IMHO - perklo
PS - I was shooting that same 150 gr. Win. Silver box Power Point...