A solution that might get you more bang for your buck ic to have the ‘03 rebored to 338/06, and then build the 284 on a more suitable action.
The result would be two rifles that function well, for likely the same cost as one 284 that frustrates you.
+10 THIS if you go 338-06 or 35 whelen you can do it with a rebore on the original barrel, if you do the 284 you need a new barrel and chambering but if you do this 284 on a new 700LA you will still be
able to sell it when you fall out of love with it. Not saying the 284 in a o3A3 won't feed from the mag, I don't know if it will or won't MB
