I need some advice , I have searched high and low for this info and can't seem to get any good information, I have a 11.5 inch knights armament full time suppressed sbr. I'm looking for a powder that would be best for loading 69 or 77 gr smk bullets in this short barrel. Of course accuracy is key but velocity is important as well I know I'm sacrificing some by going down to 11.5 but hoping there is a powder out there somebody has tried that worked well in the shorter platforms. Thanks.
