No one has reported an extractor rimfire or shotgun.....yet! Rimfire ejectors have narrower posts at the top than centerfire, the notch in the barrel and the post has a rounded shoulder instead of the straight notch in centerfire barrels, but the rimfire ejector should work in a centerfire barrel, not the reverse tho. Larry has worked with the rimfire so he should be able to give you a difinitive answer.
Tim