Model 65 M 22mag- . . . some questions-help please

Picked up a 65M for $120 just to have and it turned out to be quite a shooter .
I tossed an old K-6 on the only rimfire mount I had , sighted her in and shot about 120 rds off of CCI 40gr and Rem Premier 33gr V-Max at 50 and 100yds.

5 shot groups , same scope setting , center hold on dot ;

[img width=600 height=450]http://i6.photobucket.com/albums/y214/ultramagbrion/MY%20WEAPONS/Savage65Mtargets002.jpg[/img]

Im curious though , how do you get the bolt out ? Looks like you disassemble the trigger group to uncover the back of the action ?

Out of three different boxes of two different kinds of ammo , I had 7 duds; 3 of one 4 of the other .
I'm guessing the firing pin spring is a little weak or needs a good cleaning .....or both . She doesnt eject shells all that great and I'd say one in ten pop off the bolt face before its ejected , forcing me to drop the mag to clear .

Anyone familiar with disassembling these ? I've got the blow-up diagram from Numrich , bot it isnt much help.