On the top is the Marlin Model 97 circa 1912. (Actually unknown date, between 1906 and 1915).
On the bottom is a Marlin Model 39A bolt.
That big cut they made for the lever also made the bolt weak.
Not a problem when shooting standard velocity .22.
But could crack the bolt face when shooting high velocity modern .22.
I found some info online here;
Even shows a bolt that had been brazed due to being cracked.
I am not sure what the hand engraved markings on the 39A bolt mean “9 69”.
Perhaps the first owner scratched it on there.
Perhaps it was the date of purchase of one of the owners.
I don’t have the rest of that rifle; just it’s bolt.
Which I modified to fit my 97 in order to preserve the original 97 bolt intact.
You can see the difference between the 97 extractor and the 39A.
Here you can see where I had to remove material from the ramp on the 39A bolt where the lever rides.
The 39A bolt actually fit into the 97 fine before modification but reached battery too soon causing the lever to hang down.
Simply taking about .010" off the ramp of the 39A bolt allowed a perfect fit and operation.
This is a “2 screw ejector” on the model 97.
Here on the left is the model 97 firing pin.
Model 39A on the right.
I won’t have a day off for the next 10 days.
Only test shooting has been done indoors into a tree stump since fitting the 39A bolt.
But I fully plan to do some test shooting and will report back to this thread with some pictures as well.
Living in a shipping container has advantages… living in the national forest doubles those advantages.
See you on the range in about 10 days Marlin fans.