Which powder did you use? Charge weight? Barrel length you plan on shooting them out of?
It would be nice to use the same bullets as I use in .30-06
I use imr4227, and load around 16.5. I'm currently running a 16 inch barrel. I plan to build a pistol upper soon but with the same carbine gas set up it shouldn't be an issue. I haven't used a chrono yet, so not sure where I am sitting fps but haven't had any issues.