N560 used to be the wonder powder for the 243 before R26 was released. It may be less temperature sensitive than R26 too.
VV165 is one of those inherently accurate loads in the 280AI. Works with most any 130-150 grain bullet.
They used to be more expensive than other powders but most of the newer ones have caught up with it price wise.
As I pointed out in the article, the N100 series is pretty close in price to a lot of so-called "American" powders these days--relatively few of which are made in the USA. The N500 powders are a little pricier, usually around $5 a pound more.
