I’d be interested in seeing 130, 140, 150, & 160 grain 277 partitions. It seems SPS has had a lot of 270 Partitions for sale over the last couple of years. I ended up with some in each weight.
As far as the discussion with the different bullet diameters. It seems to me that at one time; as the diameter of the bullet increased so did the thickness of the jacket and perhaps the change in the core. That is a 338 bullet would be built “tougher” than a 308 bullet. I don’t think that’s necessarily true now.
Bullet technology has changed so much. Compare what we have for choices today to what was available before Nosler designed his partitions.