I have had this same problem with 2 different BX-25s. At least once per full mag, sometimes more than once, a cartridge will fail to feed by missing the chamber. The bullet will impact the breach face at a steep angle above the chamber, sometimes also above and to the left of the chamber (from left from the shooter's perspective).
I do not have pics, but I found one on Google that shows a similar, but not identical, misfeed.
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The misfeed I'm getting is like this, but is actually a little more severe. In my 10/22, the bullet usually impacts the breach face like this, but even higher, near the top of the breach face. It also sometimes veers left somewhat (away from the camera from the perspective of the photo).
I have not yet had this happen with a 10 round rotary magazine.
FYI, my 10/22 is stock except that it has a TacSol extended mag release. Everything else is factory OEM.
Has anyone encountered a similar issue? I'm kind of stumped. I have a few ideas, but I doubt any of them are likely to be the fix.
All of my mags have some play in them. One thing I considered is that maybe there is too much. I don't know how I'd tighten them up. I also don't know why this looseness would cause issues for a BX-25 but apparently not cause issues for a BX-1.
Mag springs too weak? Doesn't make sense. If they were, I'd expect either 1) the mag to not present a new cartridge in time and the bolt end up closing on an empty chamber or 2) the cartridge would not sit high enough and would impact the body of the magazine instead of traveling up the feed ramp.
Mag spring too strong and/or feed lips out spec? Maybe. If the spring was pretty strong and the feed lips are too wide, I can see a scenario in which the nose of the cartridge starts to rise early, passing above the feed ramp, and the rim getting loose from the magazine before it reaches the cutout designed to release the rim. Seems unlikely, however, to have two magazines with the exact same complimentary flaws, but I guess it's possible. Also possible it's a mag spring issue only; again, I can envision a scenario where the cartridge's nose rises early from the strong mag spring and passes above the feed ramp. This would present the cartridge at a bad angle when the rim did clear the cutout.
I do not have pics, but I found one on Google that shows a similar, but not identical, misfeed.
The misfeed I'm getting is like this, but is actually a little more severe. In my 10/22, the bullet usually impacts the breach face like this, but even higher, near the top of the breach face. It also sometimes veers left somewhat (away from the camera from the perspective of the photo).
I have not yet had this happen with a 10 round rotary magazine.
FYI, my 10/22 is stock except that it has a TacSol extended mag release. Everything else is factory OEM.
Has anyone encountered a similar issue? I'm kind of stumped. I have a few ideas, but I doubt any of them are likely to be the fix.
All of my mags have some play in them. One thing I considered is that maybe there is too much. I don't know how I'd tighten them up. I also don't know why this looseness would cause issues for a BX-25 but apparently not cause issues for a BX-1.
Mag springs too weak? Doesn't make sense. If they were, I'd expect either 1) the mag to not present a new cartridge in time and the bolt end up closing on an empty chamber or 2) the cartridge would not sit high enough and would impact the body of the magazine instead of traveling up the feed ramp.
Mag spring too strong and/or feed lips out spec? Maybe. If the spring was pretty strong and the feed lips are too wide, I can see a scenario in which the nose of the cartridge starts to rise early, passing above the feed ramp, and the rim getting loose from the magazine before it reaches the cutout designed to release the rim. Seems unlikely, however, to have two magazines with the exact same complimentary flaws, but I guess it's possible. Also possible it's a mag spring issue only; again, I can envision a scenario where the cartridge's nose rises early from the strong mag spring and passes above the feed ramp. This would present the cartridge at a bad angle when the rim did clear the cutout.
