Protocall_Design
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The reamers wear out gradually over hundreds of chambers. There are many shades of gray between "all good" and "all bad". Not just black and white.
You can rent a 22 lr reamer from 4D Reamer Rentals for $38 plus $12.85 shipping . You want a cylinder reamer, not a barrel reamer as pilots portion is different. Cylinder reamer pilot is throat size and a barrel reamer pilot rides on lands
22 LR Cylinder - 4D Reamer Rentals
You do not need the go/no go gauges.
Just turn in using a tap handle. Always turn clock wise with a coat of light oil until rim cutter touches recesses. Pull out using a bit of a clock wise twist. Clean with brake or carb cleaner. oil reamer and chamber and repeat on next chamber. It will only remove a very tiny amount of material in tiny tiny cuttings. You do not need extractor in place, but leaving it will not hurt anything. Place cylinder in padded vise and no need to get it real tight as not much torque is needed. After you're all done clean well with carb cleaner, make sure clean under ejector.
Lots of S&W 22 cylinders have this problem. Reaming WILL fix it.
I can fire a carton of 22lr from any of my K22s and eject with a thumb stroke.
Lots of S&W 22 cylinders have this problem. Reaming WILL fix it.
In fact there was a reamer being passed from one member to the next on this forum for some time. I have no idea where it is now.