I know that not everyone has this problem and for a while I thought it was me, but as my CZ rimfire bolt action feeds and extracts flawlessly, I was wondering if it was the Mark II, since I have the original OEM magazine for the Mark II as well as two new aluminum ones I bought earlier (10 rounders). All have the same problem, which is failure to feed / jams. Doesn't matter how fast or slow I cycle the bolt, most of the rounds get jammed on feeding. Tried different types of .22LR ammo. Same thing.
Based on a CGNer here posting a solution for this with steel epoxying the magazines, presumably due to them falling apart:
https://www.canadiangunnutz.com/forum/showthread.php/1974321-Simple-fix-for-Savage-MkII-22lr-mags
I took a look at what the fix was doing and then I took a look at mine and tried something different to confirm the cause.
Symptom - rounds get jammed when feeding. This is 80-90% of the time.
Action I tried - it appears there is a lot of play with back and forth rocking of the magazine - doesn't matter if it was steel or aluminum. What I tried, after the magazine was inserted and secured, was to hold the magazine UP with pressure while at the same time pushing the magazine BACK with one hand, while the other hand, cycling the bolt (I used snap caps). To my surprise, all 10 rounds fed and ejected flawlessly. I tried again with both my OEM magazine and the new aluminum ones, hold the magazine up and back. Every single round fed and ejected with no problems (up to 80 times flawlessly). I then took my hand off each mag and tried to cycle the rounds. Every mag started jamming again.
Cause - turns out without manual intervention, the round sits at a very very slight angle due to the play in the magazine (up and down and front and back) and as such, will not feed, causing the jam. It is the slight play that is causing this. I don't know whether the problem is the magazine or gun, but based on Mystic Precision's solution, that epoxy will essentially fill in the gaps and cause a more secure fit, thereby eliminating the movement, forcing the magazine to be at the level it needs to be so that the rounds can feed.
Based on a CGNer here posting a solution for this with steel epoxying the magazines, presumably due to them falling apart:
https://www.canadiangunnutz.com/forum/showthread.php/1974321-Simple-fix-for-Savage-MkII-22lr-mags
I took a look at what the fix was doing and then I took a look at mine and tried something different to confirm the cause.
Symptom - rounds get jammed when feeding. This is 80-90% of the time.
Action I tried - it appears there is a lot of play with back and forth rocking of the magazine - doesn't matter if it was steel or aluminum. What I tried, after the magazine was inserted and secured, was to hold the magazine UP with pressure while at the same time pushing the magazine BACK with one hand, while the other hand, cycling the bolt (I used snap caps). To my surprise, all 10 rounds fed and ejected flawlessly. I tried again with both my OEM magazine and the new aluminum ones, hold the magazine up and back. Every single round fed and ejected with no problems (up to 80 times flawlessly). I then took my hand off each mag and tried to cycle the rounds. Every mag started jamming again.
Cause - turns out without manual intervention, the round sits at a very very slight angle due to the play in the magazine (up and down and front and back) and as such, will not feed, causing the jam. It is the slight play that is causing this. I don't know whether the problem is the magazine or gun, but based on Mystic Precision's solution, that epoxy will essentially fill in the gaps and cause a more secure fit, thereby eliminating the movement, forcing the magazine to be at the level it needs to be so that the rounds can feed.
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