I believe jorgeI has a 375 that's been known to cut a single ragged hole. May be mis-remembering that tho.
I'd think that if you chose a good smith, regardless of cartridge - the rifle should be put together well.
Most of it ends up being the nut behind the trigger anyway.
I think Jorge is a damn good shot too, from what I've seen from the targets he's posted.... It's not just his 375 that shoots well..