DC
I hear you ... factory cartridges will always beat wildcats ... but there's a special passion that goes with using a wildcat cartridge.

For cheap thrills and if headstamp isn't an issue ... make your 404Jeffery brass from 375RUM. Its worked for others at half the cost of 'real brass'.

Open the bolt face to 0.532" and that same RUM case can be used to form a bastardised 425WR that will feed light years ahead of the original.
Cheers...
Con