Pat I think so. Not sure. For some reason I think the mag box parts for the 257 was bit different.

The 270 I had "worked" on that 308 action but it was obvious it wasn't right. Some may not be bothered by it but there's no guarantee it will work for someone else on another action,so I can't recommend it.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.