from the top down: stagpanther; yes higher pressures and feeding issues, i already have expermented with adjustable gas blocks and have pretty much solved the cycling issues.
jmr40; agreed bolt is the choice there but budget is an issue also, i have the ar-10 i don't have a bolt 243 any more.
stagpanther; yeah the creedmore's are close to the same geometry so that should answer the feeding question.
GeauxTide; hmmm if creedmore feeds ok i would think that 243-ai would also. but that is just thinking, maybe you have experance with this ?
stagpanther; isn't 284-win a larger diameter than 308-win ?
tangolima; yeah lots to choose from there. but no ai