If your rifle is a true M-612, it will be chambered for the experimental .267 Remington rim fire cartridge.
If it's .22 rf then it has been modified from it's original production model, possibly by Remington
For more information, see the book "Remington .22 Rimfire Rifles by Gyde & Marcot".
SportMaster Model 612
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remington600
- Posts: 701
- Joined: Tue Jan 22, 2008 9:27 pm
- Location: High Ridge Missouri
Re: SportMaster Model 612
I have seen many post about people requesting info on their 22 rf model 612's. All of them have been 512's. Post a picture. Would love to see it.