I re-barreled a friends .338 win mag in a Ruger M77 to what we now call the .458 Ruger (wildcat).
It is a .375/.416 Ruger necked up to .458". Yes it has a tiny shoulder but works a treat.
We used .416 Ruger cases as they were easier to neck up to .458"
CH4D made a set of dies from a few fired cases we sent them (took 18 months to get the dies)
This cartridge runs about 50-60 fps slower with 500gr bullets than the .458 Lott from a 24" barrel.
He has not had a chance to give it a run on Aussie buffalo yet but I am sure it will work well.
