"The one next to it on the right is the Lyman bullet that is designed to be 250gr. Not sure of the number of the mold as it is Paul5388's."

It looks like the Lyman 454424. They may have renumbered it to something else. I like the bullet and cast and shoot a lot of them. I used to size them to both .454" and .452" for guns with different size cylinder throats, but have just sized them all to .454" for years now and they shoot well in everything.