I know this thread is about 243's with a 1:10, but after lots of experiments trying to shoot longer bullets in Rem 1:9.125 and Savage 1:9.25, I decided to go with a 1:8 on a 243AI so I can fully stabilize some of the longer bullets. It's really not worth it in my opinion to try to chase LR shots with inferior twists. Yeah, shots to 500 are no biggie in still air, even with slower twists, but the wind becomes so much more a factor when stuck shooting the stubbier bullets. I also plan to try out the Nosler RDF 105 on an animal this fall.
