My post 19 said clearly that you cannot use a WRF in a rifle chambered for .22LR.
There is no danger at all in firing a WRF in a magnum chamber. The WRF is a much lower pressure round. I am going on memory and could be wrong but I think the WRF uses bullets with a .224 diameter. They are pure lead and often shoot extremely well in .22 Mag guns which I think use a .223 diameter, same as many centerfire .22’s.
I once did a “kitchen table” rechambering of my old Remington 514 to WRF. It worked and was far more accurate than it was in .22LR but that actually was a bit dangerous.
Very interesting info. Thanks yarddog.
"A .22 mag is both too large and too long to fit into a .22LR chamber."
My question is: I have .22WMR ammo. Since the diameter is the same but the round is shorter can I still fire it in a .22mag rifle, or, can you fire it in a .22LR rifle? While waiting for some answers I pulled one of each round from a box and noticed that the .22WRF is shorter. Can it still be fired in a .22mag semi-auto rifle? It is appearing from yours and other posters that it can be used in my Marlin .22mag. I just spent $30 for three boxes and can't take the back even though the salesperson said they were .22mag.
Anyway, I appreciate all the help.