I've evidently got too much time on my hands as I wait for a 280ai build to be completed. I have been collecting components to load but since I don't have the rifle yet, I have gone about as far as I can. I have an assortment of .284 pills to try including Hammers. 120's, 131's, 143's, 146's, and 155's are sitting there staring at me. Peterson brass, BR2 primers, H4831 SC (and others), Redding dies, bushings, and shell holders are now staring at me as well. I have not heard anyone's experience with the 155's. The barrel will have 8 twist so it should be able to spin them sufficiently. Anyone try the 155's?