Re: Leupold Mark 4 ER/T 4.5-14x50 TMR
I have that scope in a 40mm objective, and 50mm objective. The TMR reticle is really useful if you can find someone with a ballistic program like Exbal that will tell you exactly where each hash mark on the reticle intersect's the bullet's flight.
Also, if you get a .75 inch copper plumbing adapter, or other female fitting that accepts .75 inch copper pipe, you can make a zero stop for these scopes.
You cut off a thin piece of the .75 inch end, and keep making it thinner until it gives you just enough thickness to give the right amount of filler for underneath the adjustment turret knob. You have to remove the knob. and if you pop off the little tapered ring that the knob goes down into, you can measure just how thick of a piece you need.
The little copper piece looks much like a really thin copper washer, or spacer. Actually, it is exactly just a thin copper spacer that goes between the bottom of the elevation adjustment knob, and the top of where the knob would meet the scope.
The only bad part is that each scope and distance at which you zero will require a different zero stop. Now I have a bag full of different sizes for whenever I change loads, scopes, or distance at which I zero.