I too have mentioned this;
The 22 250 is parented on the 250 3000 aka 250 Savage circa 1925. It is about .16 shorter than the 308. 250 Savage dies are a shelf item if this is a 1 rifle deal use the 250 die to neck and shoulder and a 308 to body size. Or better yet put it in a new action and hop up a 250 + P.