Re-barrel .375 Ruger African to .458 Win Mag (for Lefty)

[Jimeast]

First post (I have been shooting Ruger SA revolvers for several years and just found a .375 Hawkeye African in left hand)

I have the hankering for a 458 Win Mag in a left hand bolt action. It looks like the .375 Ruger African Left Hand rifle can be re-barelled to .458, and except for sights, bluing, floating, bedding and any stock fitting to the new barrel, this change should be relatively straight forward and cost effective.

I am curious if I am missing any major costs or challenges for this project?

 

[Sugar River]

Going from a bottleneck rimless case to the straight belted case may introduce feeding problems.
Might require altering the lips or a different follower/ mag box.