If I wanted to have my Mod. 71 Win. rechambered to a .348 Ack. Imp. could I have it bored out to a .35-348 later and just expand the neck and use the .348 Imp. cases that are already fire formed?

I have a .356 Win. and would like to use the .35 caliber bullets from Alaska Bullet Works and the cheap 220 grain Speers.

Do you guys think the .348 or .35-348 Imp. has plenty of potential velocity to expand.the 220 grain Speer FP at reasonable hunting ranges, I hear it is a tough bullet?

I'm and old Alaskan who only hunts here for moose and caribou in the fall and once in awhile a bear.