Well, after 11 months and a return trip to the gunsmith, I just rcvd my custom L579. Took it to the range and it would not shoot. The firing pin is not striking the primers hard enough. How much should the firing pin extrude from the bolt face on a L579? I am really frustrated with this rifle and the guy who built it. No matter what, it will not be going back to him. Any suggestions as to what might be the problem would be appreciated. Thanks.

As you probably know the L579 has an adjustable firing pin protrusion. To be quick about it, approximately 1/16 of an inch or .0625" When looking at the firing pin shroud you should be able to see the fluted cuts on the pin from the rear, and be advised there is a very small set screw which is seen from the sear side of the bolt. If this loosens it can prevent the bolt from opening and may only be accessed from the rear tang screw hole. Yes it happened to me. Slowly increase the firing pin protrusion till it will reliably set off the primer, then lock it down. Too much would help with pierced primers and defeat maximum accuracy. Enjoy your Sako and hopefully it will have been worth the trouble.

Thanks alot 308 SAKO! How is the protrusion adjustable? Is it with the set screw on the sear side that you mentioned?

After loosening the small locking screw, the protrusion is adjusted out by turning the firing pin with a screwdriver (visible from the back of the shroud) to the right.

On my Sako bolt, the shroud that surrounds the base of the brass is about .062 deep. I set the pin about .010 to .012 below the upper edge of the shroud. This gives about .050 to .052 protrusion. Once set, lock the firing pin in place with the set screw. Your dimensions may be different. A dial caliper works for measuring.
Ron

OK guys, thanks for the help, but my L579 is a POST Garcia type with the AII style bolt shroud. For the life of me I can't find a way to adjust it. I can see the cocking piece is threaded onto the firing pin from the rear, but with the enclosed shroud in the way I can't find a way to get access to it. I was told by a reputable gunsmith that it is set at the factory and can't be adjusted!?

I was able to find a brand new firing pin assy for the L579 for $96, just in case. Thank Goodness!

Could the bolt handle be hitting the stock before reaching battery? I'm not very familiar with the Sako action, but with some bolt actions this affects striker protrusion. Sounds like a custom stock might be involved here, so I thought I would mention it.

no, it clears the stock o.k.