Get a good Remington action...get it trued and squared...put a good barrel like a Lilja or Hart--and off you go...

Check out many of the custom gun makers---I could list a dozen off the top of my head that all used Remington actions...as you are NOT hunting dangerous game with them..the pushfeed they offer will work just fine...as a matter of fact..I have used a Remington action thus far on 4 African hunts..no problems either..all in what you are comfortable with..

Good luck sounds like a fun project..

Ripp