Bolt Head Problem

[RJW NZ]

New to me, it seems it would either take quite a bit of tension to make the spring pop free or quite a bit of wear, or even a bit of both because if the rail was worn the bolt head should still track and hold in place just by gravity.

-Does the bolt (complete) move freely up and down the track, with the mag in and with the mag out?
-If its binding, does the bolt cycle freely with the bolt head off?
- If you put something like a metal straight edge along the track is there a lot of wear at the jump point?

I'll have a play with a rifle and see what shows up here, I have had an enfield that the whole tube shape that the bolt travels in was so worn out that the safety could let itself off when the bolt lifted up, now broken down for parts as being too dangerous.

Ok, I had a play and have no bright ideas, the only thing I noticed is that the floor plate in the magazine is pushing upwards quite firmly at that point you described, maybe there's excess pressure, maybe the mags interfering somehow, hmm, good luck