Will Winchester make the Marlin Pledge.
When the 17HMR came out. People were making mention of the Rem 5mm Rimfire and the lack of ammo.
Marlin said if the round does not catch on and ammo becomes unavailable simply send back your rifle and we will rebarrel it to a 22 mag. With that said people took the plunge.
I will be hesatant about spending $1,000 on a low wall if the ammo goes the way of the Dodo bird unless Winchester says they will rework the rifle to a 17 Hornet, 223, or other caliber wanted. Or if they come out with a rimfire bolt action either tube fed or detachable mag then the same rules apply. Make it either a 17HMR or 22Mag.