Re: M70 pre 64 action
Are you changing calibers?
I was warned about feeding issues, but more info would help: what caliber you have, what caliber to go to, all the spefics.
My FFL dealer took a Pre-64 243 Win action and made a great pack rifle. His smith did a good job of chanbering it but he does share a building with the smith.
A good smith is what counts in my opinion, there are lots of them on here that will do the work for you. Or point you to a smith close to you.