Depends on which country you will go to...
Actually, Malta would be a very nice place to settledown. They do not permit abortion or divorce in their country. They do have an income tax, and VAT but no property tax.....and to top it off island in the Med.
If you renounce your citizenship, you forfeit your gun rights. Period. Read the questionare on the federal firearms form 4473 that has to be filled out when purchasing a firearm from a licensed dealer in the U.S. If you renounce your citizenship which is a “yes” answer on the form, you walk with no gun. It’s federal law.