G'Day Fella's,
Mulder, this is a job I undertake on any rifle, I believe will benefit from this.
But you need to not only have the knowledge to undertake this job but also, the equipment to clean up after you have completed the job.
http://www.sinclairintl.com can supply you with the (
https://www.sinclairintl.com/gun-cleani ... 35492.aspx - check out the video on this) Action Cleaning Tool, Dental Swabs, Abrasives and other equipment to use, and then the clean up after you have completed the job.
The first thing I do, is to measure all the bolt locking lugs, from Front to Back and right this Imperial measurement down (Lug 1=, Lug 2= Lug 3= ).
You need to do this, as if you remove to much material/Steel, you can create an EXCESS Headspace situation!
This can cause a potentially DANGEROUS Situation!
I then carefully apply a small (a Match head size) amount of fine mild abrasive (I have been using the same bore fouling remover (designed for .303 British), for years now and it works well), to the rear surface/face of the bolt locking lugs (2 or 3 of them).
I then insert the bolt into the rifle and pushing the bolt handle forward as far as possible, I then turn it down into battery.
I then only partially lift the bolt handle and then return it back down ..... I repeat this 20 times.
I then remove the bolt from the rifle and clean off all the abrasive and muck off, and with a bright LED flash light, inspect the rear face of the lugs for any indications of material/Steel removal.
I then remeasure the bolt lug length Front to Rear and if it has changed, write this new measurement down.
If I can see that some material/Steel has been removed, I then mark the rear surface of the locking lugs with a black Texta/Marker pen, and put it back in the action and close the bolt (into battery).
I then lift the bolt up and remove it from the rifle and again look at it with a bright LED.
Generally, the black Texta will be removed from only the high spots/contact surface of the bolt lugs, and this will give you the indication of Locking Lug surface contact.
If required, I repeat this until I have at least 50% contact on all (2 or 3) bolt lugs BUT ONLY WITHOUT REMOVING MORE THAN 0.002" (Two thousandths of an Inch) OF MATERIAL FROM THE ANY OF THE BOLT LOCKING LUGS!
Remember, you have probably been removing material/Steel from the Action Locking Lug Abutments inside the rifle action as well but you can't easily measure this, SO DON'T OVER DO THIS JOB!!!
I then use the Action Cleaning Tool and several Dental Swabs wet with a small amount of Turps, to completely remove all remaining abrasives and muck from inside the action lug abutment, raceways etc.
Once this has been completed I let the Turps evaporate. I then put a Match Head dob of grease on the rear of each bolt locking (to lubricate this most critical and hard worked surface), and put it back in the action, to spread the grease around.
Please remember, unless you actually know and fully understand what it is you are doing and trying to achieve here DON'T DO IT DOPEY!!!
Hope that helps
Avagreatweekendeh!
Homer