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A2 bolt grub screw

Sako Collectors Club Discussion Forum

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bigjack

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Firing pin assembly.
There is a grub screw on the underside of the bolt shroud which ensures the firing pin spring is kept in place.
On mine someone has tried to drill out the grub screw and failed.

I had taken it to a smith who could not drill out the grub screw as he said it was hardened as hard as the drill.
Talked about spark erosion as well.

It is a small diameter screw.

I have been using the gun for the past 5 years with no problem

Should I try someone else or leave it?
 
bigjack, since no one else has answered your question here is what I think . The only reason you would need to remove the pin/screw would be to make a firing pin adjustment or replace the spring. That said, if it works don't fix it. Sako made changes to the bolt shroud/sleeve in the late 70/s which carried over to the A series and I believe that the use of a screw to lock the firing pin adjustment was changed to a pin. I have in my hand an AI bolt and it does not have any slot or provision for removal with a screw driver/allen wrench. This rifle was purchased new and is original. I can't tell you how to take that pin out but I would like to know myself. The earlier bolts used a screw to hold the firing in position in the cocking piece and those could be disassembled easily. I did notice that in one of the Sako sites instructions pages there was a note that said firing pin adjustment could not be made without special tools. You could visit www.sako.fi ,click on rifles,look for old models open that and check for info.Sako has changed the site and some info may not be there anymore. Someone here may have an answer, you probably need to find a smith that is very knowledgeable with the A series . Best of luck Jim
 
Jim,
Thanks for your comments.
It is interesting what you say as I have an L461 bolt from 1964 and I have removed the grub screw to take apart the firing pin & spring and the housing.
Each hole is 3mm diameter.
FWIW Sako added the shroud to prevent any flash back on the A series.
The Sako diagrams have the firing pin assembly and not the parts.
As you say if it ain't broke...
 
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