11mm DOVETAIL RINGS, 30mm Medium

When you buy Tier One rings you get precision, toughness and repeatability meaning tighter groups and more accuracy for that one shot that counts

Tier One 11mm DOVETAIL scope mounts are precision made with precise 5-axis CNC machinery. We've optimized the process by investing in modern tech, lowering the number of operations from 8 to 2. This helps maintain accuracy without any loss due to re-setting.

• All rings are made from Aluminium 7075T6 and are available in Medium height.
• Lapping is not required as each ring set is a matching pair machined to very high tolerances from a solid billet.
• Not recommended for Magnum or high recoil calibres.
• Supplied with custom made stainless steel screws, specially manufactured at our facility.

Height Options

Design

• Manufactured from High Grade 7075T6 Aluminium for very light weight but excellent rigidity
• Mil-Spec 30 micron hard anodized finish
  
• Built in Anti-Cant bubble
• Compatible with Tier-One ring reducers
• One Hit machining to ensure repeatability
• Supplied complete with necessary Torx bits
• A pair of 30mm dovetail rings weighs approximately 150g.

Two options for using a fixed bubble level to level the fall of shot with your scope: 

If using a holdover reticle:

• Set up a plumb bob line at about 10 – 30 meters.
• Attach the rings to the rifle.
• Put in the scope, lightly tension the ring cap screws.
• Point the rifle / scope at the plumb bob line.
• Level the bubble level on the rings.
• Rotate the scope in the rings so the vertical cross hair is perfectly vertical to the plumb bob line.
• Correctly tension ring cap screws.
• Have a beer.

If dialling up on the elevation turret:

• This is aka a "Tall Target Test".
• Set up a large target at 50m or 100m. 50m is good because you can shoot tiny groups and the wind has no major effect.
• Use a plumb bob to scribe a perfectly vertical line up the target.
• Mount the rings and scope. Get the scope roughly level in the rings by aligning the vertical cross hair with the vertical plumb bob line while the bubble level is level.
• Properly tension the ring screws.
• Zero in on a aiming spot off the line, ensure the bubble level is level.
• Shoot a group at a aiming spot at the bottom of the vertical line. Ensure bubble level is level.
• Dial up an amount and shoot the next group near the top of the vertical line while you still aim at the aiming spot at the bottom. Ensure bubble level is level.
• Note if the high group is to the left or right of the vertical line:
• If it is left; rotate the scope in the rings clockwise a small amount.
• If it is right; rotate the scope in the rings anti-clockwise a small amount.
• Be sure to re-tension the rings correctly. This is a good moment to assess if your scope position and eye relief is comfortable for you.
• Repeat groups until the upper shots group perfectly on the vertical line. Ensure bubble level is level for each shot and group.
• Use this test and some maths to check your scope elevation dial is indeed applying the correct elevation selected. Not all do. Good ballistic solvers have an input to correct for this.
• Not all scopes have the crosshairs aligned perfectly vertical when the elevation dial has the shots tracking perfectly vertical. This is a common issue with anything less than top tier optics.
• Beer.

Note:

• With second focal plane reticle scopes, use the zoom setting you will use in the field when aligning or shooting each group; as many second focal plane scopes will shift POI with zoom changes.