I just chronoed some Precision 230 grain RNFs this past Saturday out of a Sig 220. I used 5.6 grains of Titegroup, Federal 150 Large Pistol primers and once fired Winchester .45ACP brass.
Thirty rounds averaged 835 fps. Std Dev was 13 (IIRC). Accuracy was good, although I was primarily trying to not shoot my Chrony. After I finished I did whack a bunch of bowling pins @ 15 yards. I want to ease up to 850 fps average, so I bumped the next load to 5.7, but haven't had a chance to test them.
They are easy to seat uniformly with my Redding competition seater. I'll definitely reorder. Wish they would add a line of .38/.357. They said they were going to, but that was some time ago.