In the past yes, a while back. If I am not mistaken it had a huge "pressure groove" where today's cannalure is. Also at that era there was a 270 gr 375 cal Partition.
Back in 1990, Nosler came out with the .358 cal 225 gr PT. Nosler made some changes to the ogive.
The .375 cal 300 gr PT was reintroduced in the mid 90's? so I am sure there would be some differences from the older machined style.
I'm new here............so no offence intended...............but, I see a lot of posts where shooters are looking for a comment by someone from Nosler and lots with no answers.