I finally got to run some rounds through my JDJ barrel today and it shot great. I was just working up to the load I wanted to use and wasn't in a position to really test accuracy, but it was shooting very well. With a lousy rest and shooting at a circle I made with a sharpie which was about 2.5 inches across, it was dropping every load (3 to 4 rounds per charge weight) into an inch or less at 25 yards. I have no doubt this barrel will out shoot me.

I wanted a 358 JDJ for a long time and I'm glad I've got one now. As I said earlier, just use RP brass and you'll be good to go. The turn around from SSK is pretty fast.