Originally Posted by
OhioNovice
Do these fit in standard .17 hmr rifles? Looking at the side by side, the round is twice the size.
Not sure exactly which question you're asking, so I'll answer both:
1) Can you shoot this from a .17hmr? (unlikely meaning, but in case someone else reads it and thinks that's what you're asking). No, none of the rimfires are interchangeable at all, especially the .17WSM from a .17hmr chamber.
2) (more likely meaning) No, it isn't going to fit in the same rifle. I think we're going to see this chambered in 'hybrid actions' like the Savage 25. The boltface for standard rimfire cartridges will be all wrong for the .17WSM, the pins wouldn't strike the primed rim.