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Scope Mounting Instructions

How to Get the 3-15 Mounted on a Rifle

There are some manufacturers that will recommend only a qualified gunsmith should mount a scope to a rifle.

There are some manufacturers that will recommend only a qualified gunsmith should mount a scope to a rifle, as they will have the proper equipment and knowledge to adequately perform the task. However, by using the right tools for the job and taking some simple precautions, almost anyone can successfully mount their Heritage™ 3-15 in a set of rings.

Tools Needed:

  • A set of Wheeler Engineering levels, a plumb bob placed, or a magnetic boresighter.
  • Preset 15 inch/lb and 65 inch/lb T-handle torque wrenches or an adjustable torque wrench with an equivalent torque range.
  • The proper torx, allen, and socket bits for the torque wrenches
  • The proper torx, allen, and socket wrenches
  • Q-tips
  • Acetone
  • Rifle Cleaning Cradle
  • A set of high-quality 34mm rings

Things to Think About Before Mounting the Optic:

  • Ensure the rings and mounts being used are right for the application.
  • Some manufacturers recommend different torque settings for their rings so read and follow all manufacturers’ instructions and specifications before mounting the rings.
  • Some manufacturers ship rings coated in protective grease that should be removed before the rings are mounted to the rifle.
  • Ensure all torque wrenches are INCH/POUND torque wrenches and not foot/pound torque wrenches.
  • Use only the proper tools for the job as trying to substitute the right tool with the wrong tool can damage the rings, base, and/or the optic.
  • Most importantly, ensure the rifle is UNLOADED and the bolt is removed from the action.

Getting the rings mounted:

  1. Set the rifle in the cradle and get it level using the Wheeler level placed on the bolt raceways, this will level the receiver of the rifle. If the Wheeler levels are not available a standard level placed on top of the picatinny rail will work, although not quite as well, just keep in mind that not all bases are perfectly level to the receiver.
  2. Loosen the nuts on the cross bolt and place the rings on the picatinny rail with the nut facing to the left side. The Heritage™ has approximately 6.2” of ring mounting space and the farther apart the rings are, the better.
  3. Once the rings are on the rail, push them forward in the mounting slot, and use the appropriate wrench to tighten them down slightly to prevent movement.
  4. Now use the 65 inch/lb torque wrench to finish tightening the cross bolt, only one pass with the torque wrench will work. The rings are now secured to the mounting rail.
  5. Clean the ring cap screws with acetone to remove any grease or other material and use a q-tip to clean the threads on the ring base as well.

Mounting the scope:

  1. Place the scope in the rings.
  2. Place the ring caps on the rings and tighten the screws slightly but not so that the scope cannot be moved in the rings.
  3. Move the scope in the rings to get the proper amount of eye relief. The proper amount of relief will be obtained when you will have a clear, full field of view when looking through the scope with a good cheek weld on the stock.
  4. Ensure that the receiver is still level by glancing at the Wheeler lever placed on the bolt raceways or by other means. Place the other Wheeler level on the flat spot on top of the elevation knob in order to get the scope level relative to the receiver. a. If using a plumb bob, ensure that there is enough distance between the scope and the string so that the string can be seen clearly enough to get the reticle parallel to it. b. If using a magnetic bore sighter, align the reticle with the grid on the bore sighter.
  5. Use the proper wrench to tighten the ring cap crews using a star pattern, alternating sides until the screws are hand tight. Also ensure that there is an equal amount of space between the two halves of the rings.
  6. Use the 15 in/lbs torque wrench to finish tightening the ring cap screws using the same alternating/star pattern.
  7. Ensure the scope has remained level or parallel to the string on the plumb bob. If everything still looks good the scope has been successfully mounted in the rings.

Note: While this method is more time consuming than others, it has proven to be effective time and time again.

What to do if no torque wrench is available:

There are times when a torque wrench isn’t around so that the rings can be checked for proper tightness or even to use when mounting a scope. However, this doesn’t mean that those tasks cannot be performed at all. Here are a couple of field expedient means of getting the proper torque on a set of rings.

Cross-bolts:

1. Witness Marks: Use a paint pen or permanent marker to make marks on the cross-bolts after they have been properly torqued so that if the rings are removed all that is necessary is to use a wrench to tighten the crossbolt until it lines up with the witness marks. Witness marks can also aid in detecting any loosening of the crossbolts in the field.

2. 90* Method: Get the cross-bolts finger tight. Use the proper wrench for the cross- bolts and orient it so that the handle is point upwards. Now turn the wrench clockwise for about 90*, this will provide approximately 65 in/lbs of torque.

Ring cap screws or Picatinny base screws:

L-wrench Method:The best method to torque or to check the torque on these screws is to use the proper L-shaped allen or torx wrench. Grasp the small end of the wrench and turn the screw clockwise until it will not turn anymore. This will provide approximately 15 in/lbs of torque. DO NOT hold onto the long end of the wrench as too much torque can be applied potentially damaging the threads and the scope in the process.

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