NOE makes it still. I have two. You're right, the M57 likes that one. It used to be cataloged as the 412429.
https://noebulletmolds.com/site/sho...s3/412-224-swc-4-cavity-pb-brass-412459/For WFN frontal area with the Keith shape, I recommend this one. The 57 generally throws this one well too:
https://noebulletmolds.com/site/sho...7-swc-bc2/412-237-swc-4-cavity-pb-keith/
