pre fit installation instructions

pre fit installation instructions

tools needed:

*barrel wrench (made for the action brand and type you own)

*barrel vise

*torque wrench in foot pounds




  1. be sure to inspect the internal threads on the action! make sure they are free from any type of debris. if you have a tap, we recommend you “chase” the threads before installing the barrel. one common place to find thread obstructions is where the scope rail holes break through into the actions barrel threads. be sure to inspect this area, it should be free of any burs.
  2. using a thread lube such as bearing grease, apply a small amount to the threads on the barrel shank.
  3. check mating surfaces or “flange surface” on both the shank and the nose of the action, debris left in this area will not allow the barrel and action surfaces to mate up causing a headspace problem.
  4. turn the barrel clockwise, making sure not to cross thread! if you have to force it, something is wrong! stop!!! and call the shop (307)-707-3181 ext 3.
  5. once the action is shouldered, place the barrel into your vise using painters tape to ensure you don’t scratch the finish of your barrel. barrels should be inserted into the vise and clamped as close to the action as possible. DO NOT CLAMP ONTO CARBON FIBER!!!! 
  6. insert the action wrench into the action all the way to ensure your engaging the internal locking lugs ( failure to do so can and will result in damage to the race ways and possibly twist and bend the action) torque per required by action manufacture specs. (most being 70-90 foot pounds)
  7. gauging, headspace gauges should also be used to ensure a proper fit, we recommend a “go” and a “field” gauge. once barrel has been installed, a “go” gauge should be inserted into the chamber (with the ejector pin removed from the bolt) and the bolt should close. then insert your “field” or NO gauge into the chamber. the NO or field gauge should not close (this tells you the chamber is not to long) DO NOT FORCE the bolt handle down. the difference between a go and no is commonly only .003″ and is made from hardened steel, doing this can damage the chamber. We recommend you use Manson gauges, different gauges can offer different results as the head are often cut at different angles and can make contact in the chamber in different spots, for this reason we recommend you use the same brand gauges we do.

if your unsure of any part of this PLEASE give the shop a call!!! we are always here to help and answer your questions. 



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