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No, 22mags casing is longer than 22lr and that can cause issues. I definitely wouldnt try to shoot 22lr out of a 22mag. Sorry but hope this helps.

No 22 mag rounds are fatter than 22lr ammo and shooting a 22lr in a 22mag chamber can cause the case to burst and send hot gasses and metal into you face

Josh T its the diameter that is the real problem not the length

here is a good article on it "Therefore, if you place a .22 LR in a .22 WMR chamber, it will be a sloppy fit. If the LR cartridge is actually fired in the WMR chamber, the case may rupture and vent high pressure gases and particulates rearward, through the breechface. There is a significant risk of injury if you fire .22 LR ammunition in a .22 WMR chamber!" https://revolverguy.com/psa-shooting-22-long-rifle-in-22-magnum-cylinders/#:~:text=It%20is%20NOT%20safe%20to%20shoot%20.22%20LR,LR%20in%20the%20.22%20WMR%20chamber.%20RTFM%21%20Why%3F

Gary, unfortunately no 22 Magnum can safely fire 22lr rounds. This is the reason 2 cylinders come with combo revolvers : https://www.budsgunshop.com/product_info.php/products_id/28489/north+american+arms+(naa)+swc+sidewinder+22m22lr+combo+single+22+wmr++15+5+ro