Barnes makes the 180-.277", as mentioned above. Speer USED to make a 170-grainer. Nosler makes a 160 Partition Jacket. The reason why the bullet weight selection is so small is because when other weights were made available, no-one bought them! That's why the 170 Speer was discontinued, for example. I did use some of them in Alaska - they were very accurate, and performed well - but no better than the Nosler Partition 150 and 160 grainers!!