small burr on bolt lug

D

danbnimble

Guest
Really nice day here in Frostbite falls yesterday,,,,went to the range. .338 win mag.
The last two shots I had to (not sure of the terminology here) jar or hit the bolt handle upwards to unlock it to bring the bolt rewards and eject the empty case. I quit shooting. Brass and primer showed no signs of excessive pressure and this was factory winchester ammo. Six shots with a little time between each, barrel never got warm to the touch. While I was cleaning I found a very small burr on one of the bolt locking lugs. Can't see it without magnification but I can feel it.
Questions.
1) Can I just use one of my small flat fine needle files and remove or flatten the burr while keeping surfaces square?
2) Is there a greater more serious issue here? Do I need to take this issue to a gunsmith as it would seem that sliver of metal was caused by something on it's bearing surface?
 
Burr

That should work, just be carefull. You can remove more metal than you wish to with a file. The object is to remove that small high spot and avoid the rest of the metal.

You will have several come on here and say "don't do it, send it to a professional". Common sense should prevail here, you seem to have a grasp on the concept.

Keep in mind, there is probably a mirrow image of this burr on the abutment in the actions body. It might be nothing more than a small grrove. If, after you remove the burr from the bolt, and it feels smooth, just pretend what ever is in the action body is a "grease groove".

I have lapped theluggs after such occasions,but we just had a thread running that compared lapping of luggs to the comming of the anti-christ. I have the proper tools, I do not know if you do.

I am not trying to down play anything. But, I have seen actions that have had galled luggs shoot perfectly normal after any burrs were removed. .......jackie

Oh, by the way. "six shots, with little time in between, and the barrel never got warm to the touch". In a 338 Mag?? Man, it must have been REALLY cold:D
 
A little magnification

If you can possibly get a loupe and look and see if the burr is part of the bolt material or is it material that has seized to the lug. The magnification should help you resolve this. Then proceed to eliminate the burr. Are you using any bolt lug grease?
Centerfire
 
thanks Jackie
I'll be as careful as I can.
by a little time between shots I meant my firings were spaced maybe 10 minutes apart, it was in the mid 60's by the time I made it to the range. And, a couple of my buddies met me out there also. That would be three Norwegens trying to figure out why the dome lights keep coming come on when we open the doors to our trucks. I'm tellin' ya...it's pure magic.
centerfire
Got loupe, 4X, Am I to think the metal the lugs are made from differs from the actions material? Hardness or heat resistance differences also?
Read most of the posts on treating lugs, am using Rem oil but now I'm doing a little searching on other products. Seems opinions as well as experiences vary. Might pick up a small bottle of STP oil treatment. It would have thicker viscosity, beyond that fact I wonder if it isn't an issue of personal preference rather than finding a perfect product. I gathered that from all the products mentioned in the posts.
 
Dan

If in doubt, why not use something that is specifically designed as bolt lugg lube. That means some typeof high pressure grease.

I use the red stuff that is made by Pro-Shot. It is a synthetic, and is specifically engineered as a bolt lube grease. Plus, everybody sells it.

Any kind of oil would be my last choice. Oil is designed as a lubricant in running fits, where it replinishes its self on a constant basis, not a static application such as a Rifle Bolt.........jackie
 
thanks Jackie, Pro-shot is in the mail. I had to look and see where I saw the posts about lubing bolts and lugs. Was not on this forum.
 
So would you'se be d'ose Norwegians who saw the Finn taking his fishhouse in wit' da' snowmachine and said "t'say, 'DAT'S why Toivo catches all dose fish..... he's TROLLING!!"

?

:)

I'm wit' Jackie, your problem is bolt lube, specifically the lack thereof. The grease will eliminate the problem in future.... go every 25-30rds for a while and don't bother lapping. I'll suggest never going more than 50rds without greasing the lugs.

al
 
thanks for the help

Remedy for Lutifisk if ya gotta eat it and the dog ain't exactly excited about it either.....
3 oz of fish 3 sticks of melted butter. Listerine for dessert.

So...short of installing a grease zirk on the side of my action, I'm guessing I'm to use grease sparingly...as in a thin film.
 
Lug grease

Buy 1 tube of the Mobil 1 Red grease. Will last about 20 lifetimes. Auto Zone.

Or mix 3 parts Mobil 1 and 1 part STP. Put it in small plastic bottle and squeeze out what's needed.

Put it on with a toothpick or Qtip.

Roy
 
You must log in or register to reply here.
Back
Top