I've had a number of the SHV 3-10. They have been very good for me. They do not have an OEM zero stop. They have dialed reliably for me. If mounting on a long action, the Warne extended front bases can be used.
IME, the travel distance between elevation revs is small and doesn't lend itself as well to an aftermarket shim type zero stop as other designs, such as the SWFA classics. For awhile I used some sanded down pieces of 3/4" pex as a stop. They worked OK. These days I write the rev number on the silver turret retailer screw. Or just work off the MOAR reticle.
