In my simple brain, when I think about a scope "losing zero", I wonder about the leaf spring and how it is held into place. Abstract: A rotatable adjustment device for a riflescope or other optical device includes a drive screw that is threadably coupled to a rotating spindle and. My observations above are related to zero retention. However, I've never observed any sort of fastener on the Leupold scopes I've looked into, but that doesn't mean that they don't do use something than can't be seen from the outside looking in.
This high end feature can drive up the cost significantly unless youve found a low budget AO. Magnum with Leupold VX-6 3-18X he had the scope somewhere on a medium power setting. I'm not sure if Leupold used this design, and if they did, if they still do. Leupold VX-3i 3.5-10x40mm Rifle Scope (Model 170680). Im a child of the scope era, but when I started hunting. People have stated that the barbs could slip, allowing the spring to move, which can result in a change in zero. The spring tension and barbs would then hold the spring in place, without fasteners or glue. Leupold VX-Freedom 3-9x40 450 Bushmaster Duplex Rifle Scope. Leupold VX-Freedom 3-9x33 EFR Fine Duplex Rifle Scope. The assembler would slip the leaf spring between the erector tube and outer tube. Leupold VX-Freedom 1.5-4x20 Matte PIG Plex Rifle Scope. The barbs were supposed to dig into the inner wall of the outer tube. The Leupold VXFreedom 4-12x40 Creedmoor Matte Riflescope defines what a rifle scope should be: reliable, accurate, and extremely clear and bright. I've been told that Leupold used to have a leaf spring with barbs. Leupold VXFreedom 4-12x40 Creedmoor Matte Riflescope - 179313. Supposedly this helps keep the spring in place, since the mounting area goes 360 degrees around the inner wall, instead of the typical narrow spring. I just looked at a new one the other day at the store. On the Burris Fullfield, they are still using the big circular design that fits against the inner wall of the outer tube. Whether it’s riflescopes, binoculars, rangefinders, performance eyewear, or any other field optic or accessory, Leupold products are built to dominate season after season, year after year. Of course, the downside is more cost due to the extra machining, parts, and assembly time. Leupold and Stevens is a fifth generation, family-owned company focused on making the most accurate and reliable sporting optics in the world. If it slips, the erector tube moves and zero changes.
People claim that using a fastener to keep the leaf spring in place helps with zero retention, since the spring can't slip. Just peering into my SWFA scopes (objective end, with flashlight), I see the leaf spring screwed/pinned into place.
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